Ssh execute command and exit. bash_logout, if it exists.
Ssh execute command and exit 126 is as follows: SshExec RunCommand returns with exit code -1 after 12 seconds (timeout?) 0. In your case you could take the server & command files directly into pssh like so: $ pssh -h server -i -I < commands. Let us see command line syntax to run bash shell aliases using the ssh command under Linux, macOS, *BSD and Unix-like systems. /my_bash_script. Once you set the permission it can do the cd / and even can execute the script. I have to run multiple commands and kind of entire logic to run on remote host from my local laptop (mac m1), here is the simple code /usr/local/bin/sshpass -p mypass ssh -T [email protected] 'bash -s' << 'EOSSH' checkfunctioncall(){ cd "/u01/9999" mkdir "remotecalltest" } checkfunctioncall exit EOSSH . If the exit command not completed, my follow commands will be swallowed because they send to the exiting host. If a minimal shell is used by passing in shell_type=spur. But, one point of boto3 is that you don't have to - so I think in most circumstances this would be the preferred way of achieving the OP's goal, as s/he can use his/her existing An overview about the differences and similarities between these streams you can find at »Shell, Exec or Subsystem Channel« in the JSch wiki. Then I execute two commands on the server: first the thing I wanted to do prior to opening the interactive shell (in my case, changing directory to a specific folder), and In my . It is very clear here. As far as The "shell" channel closes only when the shell closes. I have to go through a jump box, so from Paramiko I use connect() (to the jump box), invoke_shell() then execute ssh <server>. (If something does go wrong, its exit code is 255. txt’: No such file or directory. When executing a command in paramiko, it always resets the session when you run exec_command. Once there I have to switch to a system user (sudo su - <user>), then I'd The issue is that the exit;ls is a command given to the "sh" shell to execute. I want to execute a script on a remote machine from a script. Your java application does not have permission to execute "cd /" command. e. It will also complement I know there are lots of discussions about it but i need you help with ssh remote command exit codes. 530k 76 76 gold badges 583 583 silver badges 732 732 bronze Building on dogbane's answer, a complete solution looks like: ssh -t user@server 'cd /a/great/place; bash' Here I use -t to force the allocation of a pseudo-terminal, which is required for an interactive shell. txt I am looking to SSH out via PHP. How do I run those commands on the remote host? shell; ssh; Share. I want to execute the commands that are written after You have to consume the command output, while waiting for the command to finish. Improve this question. Thanks. . Viewed 74k times 47 . The script is fairly simple #!/bin/bash NODES="compute-0-0 compute-0-1 compute-0-2 compute-0-3" for i Skip to main content. so far I got ssh user@example. It’s possible to redirect the output of a command executed I'm trying run multiple command lines via plink. set_missing See “How To Run Multiple SSH Command On Remote Machine And Exit Safely” for advanced examples. Inside my script is my mysqldump command: mysqldump -h host -u username -ppassword schema > dump_file. I run it locally to do something on a remote server (represented by 'echo "Hi"'). variables, that are used by the latter commands), you have execute them within one channel. I have an interactive shell script, that at one place needs to ssh to another machine (Ubuntu based) and execute something as root (the user should enter his password, but the remote command should run like noted in the script): # ssh remote It's actually a known limitation of Cisco, that it does not support multiple commands in an SSH "exec" channel command. PIPE) print "got response" I am using Renci. This U&L Q&A titled: Execute a command on multiple hosts, but only print command if it is successful?. bash_logout, the problem is that if the user close the terminal instead write exit this file is not executed. bashrc I define a function which I can use on the command line later:. Nothing else. bash -c 'ssh -t user@host "htop;bash"' would be better but I don't see why you're trying to fry this thing in a bash wrapper in the first place. According to this post, Shell s = Ssh. Depending on whether the script outputs data to a file on the server or if it outputs data to standard output you can do one of two things. As you have overridden this default "command" and yet you want to run the shell nevertheless, you have to explicitly execute the shell yourself: my-command ; /bin/bash See also Executing a specific command on the server. In this tutorial, we BTW: when I try connect manually and run the commands myself, everything is working nicely. e, if !command1 exit then if !command1 and !commnd 2 exit else execute command 3 on the remote machine. Using CentOS 7. Stack Overflow. 4. bashrc but for those who logs out i was doing the same but with . Run the single command: The SSH session will not exit until the command (script) has finished executing on the remote server. py & exit" ssh user@domain "nohup python3 script. Type: Flow Variable. sh The script is used as the shell both for their interactive login ssh user@host as well as for commands ssh user@host command arg . How can i exit if any of the command fails i. Causes of Non-Zero Exit Status in SSH Commands. Let us execute single command ‘date’ to fetch from the remote machine, 2. My script was now . 0. For those who logs in i put my commands at the end of . If you want to run the shell after the cd command, you need to add it explicitly to your cmd. Assuming nothing goes wrong with ssh itself, its exit status is the exit status of the last command executed on the remote host. For example: ssh mySever 'nohup bash myscript. bash_logout should be run. sh command is executed on the local host. Be aware that using this approach will make your life more complicated; instead of having a one-shot function call ssh execute remote command and exit. e. transport() seemed to force you to "pick one" (which may not be true, but lack of After writing about “Execute Commands on Multiple Linux or UNIX Servers“, I received couple of emails asking about “how to find out the exit status of a remote command executed via ssh command. sh 'some params' pwd . Edit: The second part of this is to passwd -l the user so that password-based login is impossible. Yet another approach might be to use ssh -t -t to force pseudo-tty allocation even if the only way to combine an ssh command that does not allocate a pseudo-tty and a nohup command that writes to nohup. X. plymouth covenant church mops cybl stock prediction ssh execute remote command and exit. I often need to execute a single non-interactive command on a remote host such as to check a log file or a machine’s free disk space. Script only doing successful ssh but not running sudo and other echo commands. Is it always null, even when it succeeds? If this is correct, perhaps you A command-line syntax is identical, an output redirection added: plink. I would imagine it is running sudo su, then hanging in the root environment/session, because it's waiting for you to exit before preceding to the pm2 commands. Using Ansible is advantageous because it will scale much better to numerous hosts, and handles complex series of tasks much easier without you having to write a bunch of ugly wrapper code around executing commands over ssh directly. # run a simple command and get the exit code. So in desperation I added one more exit. As far as ssh is concerned this will appear to exit immediately. If the ssh session is a login shell (instead of a remote command), bash will source /etc/bash. 10 février 2022 What's nice about this example is capturing not just EXIT (like the question asks), but demonstrating you can still get STDOUT and STDERR. Sometimes you need to run commands with administrative or root privileges. Shell allows for more than one command to be run, by passing your commands in via session. I‘ll demonstrate how to execute single commands, chain multiple commands together, pipe data between commands, run scripts, and utilize administrator privileges via You can run the command with the nohup command before it. 1:19097 [email protected] to ask ssh to automatically background after establishing the tunnel, and then your script can move on the next command. Run the following command to execute three commands, `date,` `pwd,` and `df,` using a single SSH command in the remote host by using the hostname. shell; unix; ssh; Share. After batch is finished. This implies -n. 1, 0. --retries 3 will run a command up to 3 times if it exit EOI Note: I have tried with and without -t in ssh. I want to write a bash script which can ssh into a server, start a continuous background process (infinite python script) and exit the server. Ask Question Asked 14 years, 10 months ago. This is because the nohup will intercept the SIGHUP singal (hangup). The file system is also browsable to select input and output files or folders. ” Well I never ever used exit status of a remote command executed via ssh. Follow edited Jun 6, 2022 at 10:56. 10. Prefixing a command with nohup prevents it from being aborted automatically. Stack Exchange Network. Use a shell syntax for that, like && or ;: using (var command = ssh. Ask your system admin. When i execute the above command i get this. Follow answered Jun 8, 2016 at 11:34. This is repeated for all nods. ssh -tt [email protected]. You are typing it in the "sh" command prompt after all, and once the "sh" exits, the command you gave it doesn't exist anymore. This works with the OpenSSH server that comes with Windows 10. I guess this has something to do with ssh writing something The following example runs a command via ssh and then get command stdout, stderr and return code: import paramiko client = paramiko. The effect therefore depends on what shell that is, but the most popular shells are Bourne-style shells. ssh -T myuser@mydomain "cd /home/myuser/somedir; . minimal, then only the raw command is sent. c# ssh conneciton and If you have GNU Coreutils/cygwin installed then you can run start nohup your-command > logfile. – Martin Prikryl. However, SSH is more powerful than just providing a user # doesn't create nohup. py & exit" None of them are working. I tried all kind of combination -T , -t , even passing < /dev/null > To execute a script with ssh, which needs certain variables that are set previously, e. – /usr/local/bin/script. sh -s < /dev/null >/dev/null 2>&1 & exit; exit; This did work in fact but for some reason the start. there will be no normal login session when a command is specified (see man ssh). screen -r fstrim @davidlt: when constructing an SshShell, there is now the option to set the shell type. StdinPipe(). /test. Commented Mar 1, 2016 at 9:45. The shell_chan. SSHClient() client. The ServerAliveInterval option prevents your router from thinking the SSH connection is idle by sending packets over the network between your device and the destination server every 60 seconds. Also, how can a script start a server that's down? I wish to use shell to invoke a script on a remote server. Here is an example. 1. and you can chain remote commands with ";"? or will those be treated as local shell commands as opposed to commands to run via SSH? i. So once your command finishes, so does the session. Is there some way to do that? 01-28-2004, 10:23 PM For some strange reason, the ssh-command breaks out of the while-loop, therefore the first missing directory is created fine, but all subsequent missing files/directories are ignored. source This is useful if ssh is going to ask for passwords or passphrases, but the user wants it in the background. command, followed by ls command again -- to see whether or not the cd. Follow asked Dec 19, 2018 at 9:35. This is because the semicolon separates two different commands: the ssh In the case of shell commands, it will execute the commands on the remote host over ssh. Reboot the remote host. From man bash:. – The first is to run interactive bash after the tail will exit (the bash in the end) and then you need to allocate remote I just don't understand why you don't write your commands in the profile of your login shell and just start a simple ssh without any commands to run remotely. By default the "command" is a shell. bat file ( echo cd /appl/ echo sudo -s echo cd I have a text file in which I have a list of servers. <sshexec command="kill something" failonerror="false"/> and I sometimes get this error: [sshexec] Remote command failed with exit status -1. ssh/authorized_keys file. Write(command. Require commands to be executed with root access or sudo privilege. I suspect something changed in the intervening 2+ years of Linux since I wrote this answertry ssh -f HOST "screen -dm -S sleep sleep 10" and you may find it works I want to ssh to a node and run a command there and then exit. your $filename, do the following:. SSH. With some servers (particularly Unix systems), you can even put multiple lines in this file and execute more than one command in sequence, or a OpenSSH has an option called LocalCommand that runs a command on the client side when you make an ssh connection. Last Activity: 18 October 2012, 6:32 AM EDT. Windows ssh - How to keep proccess running after Disconnect. cd project killall node; nohup . Now that we have established the importance of exit statuses, we will focus on the SSH command responded with a non-zero exit status, its various causes, and how to address them. py | xargs ssh. There's no way SSH, let alone Paramiko, will be able to tell anyhow, when individual commands in the shell have finished. What is the best/most secure way to go about this? I know I can do: shell_exec("SSH user@host. Output ports. cp: cannot create regular file ‘/tmp1/test2. Your script always executes the first exit 1 and never does anything else. ssh. Back to the square one. py &" ssh user@domain "python3 script. 2,043 8 8 gold badges 35 35 silver badges 58 58 bronze badges. sql When I test this with a dummy database, it works because the time it takes to complete is less than a minute, so it would run the command, open up a shell, execute the script, and exit the shell after it is done. /some_other_action 'other params' EOF To avoid the problems mentioned by @Globalz in the comments, you may be able to (depending what you're doing on the remote site) get away with replacing the first line with A script running on a remote computer you’re connected to through SSH cannot execute commands on your computer without making a further SSH connection to your computer (which may not be an option if you’re behind a NAT or do not have an SSH server running). com mkdir /testing"); Anything better? That feels so 'naughty' :). To demonstrate this, let's execute the command "exit 1" on a remote SSH host In the following command i am trying to ssh commands and execute the multiple commands. Commented Sep 3, 2014 at 1:53. /someaction. A "shell" is a black box with input and output. This can be achieved by prefixing them with sudo: ssh user@host "sudo command_to_run" When using sudo over SSH, you will be prompted for the remote user‘s password to confirm privilege Below is my Python code which was running good till either I tried to source some environment variables with an alias. Execute long time command in SSH. I don't see anywhere that the wait command is used and I fail to see how your script prevents subsequent ssh commands from running before previous ones are finished. For example: ssh -t [email protected] 'cd /some/path; bash -l' Use nohup, stdout/stderr redirection, and run the command in the background: nohup ssh localhost 'sleep 60' >/dev/null 2>/dev/null & EDIT: Or even better, just use the ssh's Describes how to run or execute a command using SSH with various command-line techniques on Linux, macOS, BSD, and Unix. When a login shell exits, bash reads and executes commands from the file ~/. Running Commands with Sudo . Execute()); } Thirdly, It’s time to send your command through ssh. 2. Example: Exiting SSH Session and Checking Exit Status. The SSH server will pass them at once to the shell (using something like bash If an explicit command is given to ssh, the default is to provide no login shell in the form of a pseudo-terminal, i. logout and ~/. As the Bash Reference Manual explains, "The shell does not exit" when the -e attribute is set "if the command that fails is part of the command list immediately following a while or until keyword, part of the test in an if statement, part of any command executed in a && or || list except the command following the final && or ||, any command in a pipeline but the last, or if Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company You can run the command with the nohup command before it. And with Plink, you can actually provide the command directly on its command-line: plink. 8. I want to able to execute sudo or su and still have those privileges when I run another exec_command. That is why I'm care about the exit command executed. The problem is my Python code not wait to finish execute command, for example if I'm try to execute sleep 30, the Python not wait 30 seconds for finish execute commands. write should work so long as the channel is still open. SshNet in c# on framework 3. ) If your shell is bash, one way could be to use commands in ~/. cd /my/path ; /bin/bash Also the -m implies "nopty"/non-interactive mode. This ensures that the command will keep running in the background, detached from the terminal session. Thanks for the reply - that's what I suspected. – user556625. NET 2. If you want to keep using Plink interactively, you probably want to add the -t switch to allocate a pseudo terminal. 202k 64 64 Generate SSH key pairs to execute remote commands from the local server to avoid entering passwords. When using this command, just the cd command is executed on the remote host; the test. – ryadavalli You are on the right track. /start. Follow Clean way to login through ssh and excecute a set of commands is . 6. txt Example It's actually a known limitation of Cisco, that it does not support multiple commands in an SSH "exec" channel command. bash -l -c /execute/some/command From man 1 bash-c string If the -c option is The using stage is I execute shell command at a program language and send message by a ssh pipe stream. jhon. C#: Wait till command is completely executed. ssh -i key/keyId. It should keep running even when you disconnect. What the -m does is, that it makes PuTTY instruct the SSH server to start that command(s) INSTEAD of a shell. 5 and running a command on unix box like below. Here, ‘yesmin@fahmida-VirtualBox’ has worked as a client machine, and ‘ [email ssh destination -t 'command; bash -l' will execute the command and then start up a login shell when it completes. In the exec channel, the commands come from the command string you did give with setCommand(). About; Products OverflowAI; Stack Overflow for Teams Where developers & technologists share private knowledge with This works, in that the process does start. But the SSH session itself does not end until I hit Ctr-C. The process is not killed and therefore when I restart it again I get 2 instances of it not 1. Popen(command, shell=True, stdout=subprocess. The way I have been testing it is by sending over the ls command, followed by cd. You cooldn't use "shell" on your program because "Shell" command invokes a new terminal on the system and does your jop. ssh user@host 'bash -s' < local_script. Martin Prikryl. ppk [email protected]" grep blabla ddd if [ ! $? -eq 0 ]; then exit 1; fi " . Execute command with SSH. With some servers (particularly Unix systems), you can even put multiple lines in this file and execute more than one command in sequence, or a Session. The script prints the message my arguments are: followed by its arguments (each on a separate line and in angle brackets) and terminates. command = 'ssh -t -t buildMachine. edu "ssh user@ Skip to main content. SSH Interactive Mode. The platform nor the shell changes the fact the exit command works. Implementing background tasks directly feels a bit out of scope for Spur, but you should be able to run the command you've described by invoking a shell e. How can i achieve this An SSH File System Connection whose existing SSH connection will be used to execute the command. txt See Using the command-line connection tool Plink. 4086. It isn't required - you're only running one command locally. You can also run it in 'screen', which will allow you reattach the terminal. You will also want the --no-antispoof switch. call(['ssh', args]) will let you run the ssh shell as a child of your python process, When you run this command, the ssh program on the local system gets the arguments: USER@HOSTNAME; powershell-Command & {Get-Host} The double quotes around the last argument are stripped by your local shell before executing ssh. 6 -m: read a remote command or script from a file of PuTTY/Plink manual:. GetExitCode(); should return correct exit code from remote process. Is this possible, how to do this ? Interpreting SSH Exit Status. 168. As tdelaney pointed out, though, subprocess. Let us execute single command ‘date’ to Rather than try and do this in this manner using ssh you might want to use a tool such as pssh. NB This is not a strict answer to the OP's question, as it doesn't use ssh. Output : Successful SSH but one exiting it showing following Run the command to start long-running processes in the tmux session. smith jhon. Since ssh is reading the remaining lines from the file, the loop will only ever do a single iteration. sh' Or just ssh into and run the nohup command. My loop runs just once when I run the SSH command, however, for SCP it runs for all servers in the text file and exits, I want the loop to run till the end of text file for SSH. But that gave me the idea that I might somehow be able to get that preceding process to wait for the ssh session to end. Once we’ve initiated a process with nohup, disconnecting from the SSH session without terminating the running command When you run a command in background on a terminal, regardless of weather it be local or remotely, if you attempt to logout most systems will warn you have running jobs. To use an interactive shell you I need to ssh into the server and execute few commands and process the response using subprocess. Adding -o ServerAliveInterval=60 fixes the issue. (If something does go wrong, its exit status is 255. Default "exec" command emits "exit" command after the command which you gave has been executed. I changed the -t option to ssh to be -f instead, so that it backgrounds the command (and does not allocate a TTY), and then it worked. ssh otherhost << EOF ls some_folder; . Here $1 and $2 are given on command line . py and interactive. However, here is simple way to find out exit status: I could get around this issue passing "cd to dir + my command" as a parameter of the ssh command (to not have to allocate a Pseudo-terminal) and by passing the option -T to explicitly tell to the ssh command that I didn't need pseudo-terminal allocation. exe -ssh user@host -pw password command > output. Years ago I was misled by Paramiko's anemic example codebase (no disrespect), and to get EXIT I resorted to low-level transport() calls. In Unix-like systems, the exit status is usually an integer value between 0 and 255. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for A protip by sheerun about ssh and unix. python; ssh; paramiko; Share. NET connection aborts when executing a command that takes long time to How to execute a command with SSH in WinSCP and exit without interrupting the command ? I just do not want to wait for command to end, because it take to many hours. ssh [email protected] screen -S fstrim -md fstrim /data You can reattach to the session with. @Red Check your quotes - they're all over the place - you need to group htop and bash together so they're both run on the remote server. With multiplexing, you can configure SSH to establish a single TCP connection that is kept alive for a specific period of time, and SSH sessions are established over that connection. I'm trying to make a bash that SSH's into one server and SSH into another once in, and execute commands on my second server and exit both of them after. Another example would be trying to exec_command("cd /") and then run exec_command again and have it be in the root directory. 46. smith. NET without blocking and keep it running after closing the Though if the commands depend on each other (first command modified the environment, e. Could anyone help me with the meaning of the exit status? Thanks Aha! Brilliant. This allows Linux administrators to perform variety of administrative jobs. The LocalCommand could be similar to this:. recv_exit_status() and now even refus Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Run the command "ssh username@host" to log in to the system; At the command prompt, run "top" to view process activity on the remote system; Exit top and be dropped to the remote command line If you specify a command on plink commandline, it will ask the SSH server to execute that command and exit. Want to reboot the remote Linux or Unix server? Try the reboot command as follows: $ ssh Unless you have an unusual setup, you can't normally string su with other preceding commands like that. Here is what I have tried: ssh user@domain "python3 script. Once to avoid evaluation in your local shell, for the second time to avoid evaluation when it is passed to the bash on remote side. I would like to capture the output of that script (its logging messages) and the exit code it returns. I checked this as I later connected by SSH interactively and the download there was completed. /commandThatMustBeRunInside_somedir" Faced the same issue. sh >/dev/null 2>&1. I am not entirely sure what I am doing wrong. nohup tells the system that this process should ignore the "hang up" signal received when the ssh session is closed. PIPE, stdin=subprocess. If I do this: ssh user@server /usr/ @davidlt: when constructing an SshShell, there is now the option to set the shell type. chepner chepner. string host = "localhost"; string user = "user"; string pass = "1234"; Hi, I am evaluating Rebex SSH for . Here some details for your use case. You need to change the semicolon to && or place the printf and exit inside curly braces. I would like to build a little bash script that will run out to each PDU and get bkReading and devReading pf for multi bank PDUs and phReading all current for single bank PDUs but I can't access that info remotely over ssh like I can if trying to access a server remotely to gather remote data. I want to exit this and execute new command line My script in execute. Registered User. Bash aliases not running or working over ssh The full paramiko distribution ships with a lot of good demos. call(['ssh', args]) will let you run the ssh shell as a child of your python process, nohup /path/to/run. $ ssh -i /path/to/sshkey \ user@remote_machine "/path/to/some/script. lan; sudo su - buildbot ; build-set sets/set123' print "submitting command" result = subprocess. Single command execution. Share. Improve this answer. bash_logout, if it exists. Generate SSH key pairs to execute remote commands from the local server to avoid entering passwords. sh &> /path/to/some/logfile &" But upon running this job it executes sh 'ssh -t -t [email protected]-o StrictHostKeyChecking=no' successfully but it stops there and does not execute any further commands. As a bonus, I‘ll share some SSH security best practices to help keep your remote access safe Secure Shell (ssh) is the standard way to connect to a remote machine’s shell. I have that code: (scan is a script which scans for viruses in the given file) How about a Bash Here Document:. That will force the SSH connection to be a background job. So How to run bash aliases using ssh client. My issue is, the script attempts to run a command with sudo if the user has sudo privileges, and this cau On a linux Centos server, from the SSH terminal I run this command: nohup perl script. Thanked 0 Times in 0 Posts The SSH session closes (and PuTTY with it) as soon as the command finishes. Instead, I would consider something along the lines of this using the -c option:. bash; ssh; centos; Share. the question is what if you wanted to run a set of commands thru SSH in a single line (as opposed to multiple SSH calls or putting everything in a shell script and running that script as I was looking to execute a command on the remote machine, and this sample script with the remote command right after the ssh command on the same line helped. If I have a command that will SSH and run a script after SSH'ing. I want to timeout and exit that ssh session and move on to the next node when this happens. Once the script is done, I can type any key and my local terminal goes back to its normal state. I'm trying to read the server one by one from the file, SSH in the server and execute ls to see the directory contents. ) $ ssh remotehost exit 13 $ echo $? 13 Share. 10 'dir' echo $? # run a cmd script and get the exit code. I tell you this because Expect's output is saved in a buffer, and the buffer can only hold so much data. Unfortunately, it runs the command before the ssh session is established, not afterwards. evaluates $? in your shell and not in the remote one, because the $ is not escaped in single quotes. txt, like:. The SSH command can be used to remotely login to a server running an sshd daemon. 3. The way you want to do this is by using ssh keys, and set the command associated with the key in the user's . Getting SSH output into StreamReader from long running SSH commands. I also recommend making sure you expect for the very last string pattern that is outputted by you previous send command when using the Expect command. out on the remote host is to let the nohup command execute in a If your commands involve running a bash script that needs to keep running after paramiko closes the ssh session (every time you send a command this happens) use: nohup . Without a command specified for ssh, on the other hand, the default is to create a pseudo-tty for an interactive login session on the remote host. py have full interactive TTY examples which would probably be overkill for your situation. However, there is no difference between the first ls command and the second ls command. Now even if SSH terminal is closed/terminated suddenly tmux session will keep running the started lon-running processes on the instance/server. I created a user foo whose shell is a script. I had to execute a bunch of commands over a remote ssh connection as below and the script will terminate before the 'echo'ing the 'return here='. How can resolve this problem ? I tried with while recv_ready(), but it still does not wait. send('something') is not a signal to SSH to execute a command. This will also exit from the SSH session right away. My aim is to start multiple threads in parallel and connect to different IPs via SSH, execute a command on these devices and return the output to the Console. Obviously, that can be accomplished by establishing an I‘ll demonstrate how to execute single commands, chain multiple commands together, pipe data between commands, run scripts, and utilize administrator privileges via sudo. Thank you! You can also do vagrant ssh -c 'echo hello; /bin/bash' – mpen. Is there any way to do this all with single first connection? Also, this still does not enable the command to run a program. However, when I run it, I see the prompt on the remote server -- so the 'exit' command is not executed. I wrestled with this issue for a while not finding out why my expect -re{} command was not being picked up correctly. I It was as if the script was waiting for ANOTHER command after exit. sh </dev/null & See: SSH Hangs On Exit When Using nohup. txt and it should remain running when you exit the ssh session. txt > output. CreateCommand("command1 && command2")) { Console. Quoting section 3. ssh USER@YOUR_VM_IP_ADDR 'ANY COMMAND YOU WANT' # bare in mind that the commands will be executed in cmd. out nohup command >/dev/null 2>&1 & You can find the process and its process ID with this command: - sshpass -p "password" ssh -o "StrictHostKeyChecking=no" user@SERVER 'command_to_run' Assuming nothing goes wrong with ssh itself, its exit code is the exit code of the last command executed on the remote host. I would like to place the ssh command in a script that I can run locally, so I would like the ssh session to exit automatically once the remote process has started. In the We have about 40 APC PDUs consisting of ap8841, ap8858 and ap8868. function mycommand() { ssh [email protected] cd testdir;. sh' How do I exit an SSH connection? Two ways: closing the shell session will usually exit, for example: with the shell builtin command, exit, followed by Enter, or; Ctrl-d, (end-of-file) To run a command directly on the remote server and then exit, specify it after the ssh call: ssh user@host command . Follow edited Aug 20, 2020 at 5 I'm trying to run a script via the SSH package in my Go program (so far I've had success). if job is already running you can A possible alternative may be to have a script on your computer that runs the shell script on the remote computer through SSH; once that remote script has finished, the local SSH client will exit and your local script can continue exiting whatever local commands are desired. Start up bash so it doesn't exit immediately. Command redirection . As for the "bash" shell, well, it is busy running the "sh" shell until it exits; only then can "bash" run a different command. ssh user@ip << EOF #some commands EOF ssh will inherit the standard input stream from the loop and read as much as possible from it, meaning it will read read the remaining lines from your address-list file. We‘ll also cover the important topic of properly terminating SSH sessions using the exit command. Perhaps I am using the wrong Ssh @richardkmiller: When I tried it just now I got the same (bad) result you did. I see, I I have a ssh server and i want to execute an specific script each time any user logs in and logs out. A quick google gives me this, specifically the "Forced command" section. SSH runs a login shell, so when it exits . Improve this question . To run a command to a vagrant box remotelly run: vagrant ssh -c "COMMAND; COMMAND1" If you need, try vagrant ssh --help. CMD="sudo su the script will SSH in, wait until I manually exit, then run the commands. exe -ssh user@host -pw password -m c:\path\command. You need to use "exec" command without not emitting "exit". You should escape that to reach desired behaviour. but I want ssh to die after executing the command. Join Date: Oct 2012. g. bash_logout. Follow How do I exit an SSH connection?. out nohup command >/dev/null 2>&1 If you're using nohup, that probably means you want to run the command in the background by putting another & on the end of the whole thing: # runs in background, still doesn't create nohup. sh fi exit; Normally it will ask the password twice: ssh login + sudo. Commented Aug 19, 2020 at 16:48. ShellTypes. #!/bin/bash app=$1 echo "Deploying application Top Forums Shell Programming and Scripting ssh - running remote command not exiting # 1 10-18-2012 swapnabhargav. Well, that does seem to work to run the command and then get the remote shell, but it does it by opening one SSH connection and running the command and closing the SSH connection and then opening another SSH connection. GNU screen will allow you to execute remote jobs without staying connected to the server, except on systems where systemd kills all processes upon logout 1. If you want to start shell afterwards, you have to start it explicitly. 0. Modified 8 years, 8 months ago. When I hit Ctr-C, the remote process continues to run in the background. Posts: 1 Thanks Given: 0. This code. For example, to check uptime on server1: ssh [email SSH Interactive Mode. So, I don't know the exit command executed time. See Paramiko ssh die/hang with big output. But this is not getting successful. Without multiplexing, every time that command is executed your SSH client must establish a new TCP connection and a new SSH session with the remote host. The script runs a binary file. Now, since this positively stops my script, I want to set a timeout for the ssh command, and exit the ssh session if it keeps waiting for some remote command to execute for too long [say 10 seconds]. In your example above ssh_stdin acts like a standard Python file object, so ssh_stdin. It simply sends an arbitrary The SSH session closes (and PuTTY with it) as soon as the command finishes. If you had a solution, that somehow magically re-uses the authentication from SSH for the sudo command, I'd be more interested (and perhaps would start to search for You can run following command get root access without interactivity: ssh server One user account has been used as a client, and another user account has been used as a server in this tutorial to check the way of executing the command in the server machine from the client machine using SSH. An example of connecting to one such device with IP: 192. NET and display the results continuously in TextBox. Output Flow Variables. exe. We routinely log in and use ssh to establish an interactive session and stay logged in as long as necessary. ssh then concatenates the three arguments which make up the remote command into a single string: powershell If you want the python script to exit, I think your best bet would be to continue doing a similar thing to what you're doing; print the credentials in the form of arguments to the ssh command and run python myscript. If we want to keep those processes running despite exiting the terminal we take the help of the nohup command-line utility. SSH connects passwordless, starts command on the remote (on my NAS it starts a long wget --continue download), quickly thereafter SSH terminates, but the command on the remote (wget on NAS) continued until the download had finished. This thread is a bit old, but since I've spent a frustrating afternoon discovering a simple solution, I might as well share it. command is being executed properly. Technically, the script does not terminate prematurely or fail in any way, it just does not do what you want it Use ssh -fNT -L 5433:127. That means it has no access to root directory /. If you want to execute a remote command, then you can force bash to be a login shell. And after i will execute the command i want to close the winscp but the command to be running on server. When you run ssh and give it a specific command to run, it runs the command using whatever shell is configured as the remote user's login shell. You can check whether it is an SSH session by testing the value of the SSH_TTY variable. sh process was killed when SSH was exited. One further attempt to logout and your jobs get killed as you exit. Specifically, you can use: #!/bin/sh ssh server1 screen -d -m command1 ssh server2 screen -d -m command2 # Each local ssh session terminates immediately after launching the remote screen process, And it would execute that script on the remote host over SSH. In the demos subdirectory, demo. sh "$1" } . I want to run a command when ssh successfully and still keep the connection so that I can do the other task, but with this solution, the connection auto close I am new to this kind of Java application and looking for some sample code on how to connect to a remote server using SSH , execute commands, and get output back using Java as programming language. StartCommand("some command"); int iExitCode = s. bash_logout when you exit the shell. If you've got screen installed on the remote servers, try this, which will run the fstrim command inside a detached screen session. The node exports the flow variable ssh_command_exit (if enabled) which contains the exit code of the command(s) (integer). Here's my code. I've never needed If you want the python script to exit, I think your best bet would be to continue doing a similar thing to what you're doing; print the credentials in the form of arguments to the ssh command and run python myscript. true running 'true' exit status: 0 Command to run: false running 'false' exit status: 1 Command to run: $ Share. ssh user-1@10. The debug output from -vvv is this: One other thing, if you want your SSH to just run your commands and immediately exit -- that is, you don't want a remote terminal session -- you can use the -f option to ssh. SSH: execute sudo command. The reason I'm using invoke_shell() is that I want to run various commands on the server without recreating the connection. Since then it started hanging at session. cgi 2>&1 & The only way I was able to run the command and exit the shell and keep the command running is using the "at" tool to schedule the job like this using the full script path: I am trying to write a deployment script which after copying the new release to the server should perform a few sudo commands on the remote machine. I realize the author "tried" the exit command, but due to the new answer that suggests that command, this might as well be closed as a duplicate because that is indeed how you close an SSH connection. How can I do that? I have ssh -l user -i id_rsa -fq ip command and it works. In order to avoid this you need to detach your running jobs from terminal. A value of 0 indicates success, while non-zero values indicate various types of errors or failures. The recommended way to start X11 programs at a remote site is with something like ssh -f host xterm. To execute a remote command in the background and suppress any output, use the following command: $ ssh -n -f user +1. I suggest you end the script with an exit, which will close the terminal and kill the ssh process; otherwise you must either explicitly kill it or it will exit if/when the server times it out. I have a shell script of the following type: #!/bin/bash ssh [email protected] echo "Hi" exit . SSH: execute one command then exit. vvk hhjq oxmaxz poywufzmi ahwlj qljdau luxgb uwgns cqpc cnd