How to exit from ssh session created from bash script?

Question

I have the following bash script test.sh

#!/bin/bash
ssh -o "StrictHostKeyChecking no" user@$1
#do some stuff
exit

However if I run this script ./test.sh I need to enter ctrl+d to get out of the ssh session and it appears as if the exit command is not working the way I intended.

Is there any way I can exit this ssh session that was created from this bash script?

Basile Starynkevitch · Accepted Answer · 2013-03-17 08:34:41Z

16

You may want to code a here document

#!/bin/bash
ssh -o "StrictHostKeyChecking no" user@$1 << ENDHERE
   here do some remote stuff
   also here
   exit
ENDHERE

If you code <<-ENDHERE the initial spaces or tabs in each line of the here document are suppressed. Parameters (like $foo) are substituted unless you code <<\ENDHERE, and the ENDHERE can actually be any word, conventionally in capitals.

Read the Advanced Bash Scripting guide (which does have some imperfections)

edited Mar 17, 2013 at 8:34

answered Mar 17, 2013 at 8:17

Basile Starynkevitch

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3 Comments

Paul Over a year ago

also use ssh -T if you don't want a tty

Edouard Thiel Over a year ago

if you want to exit the shell script if the ssh session is interrupted, add exec before ssh.

andor kesselman Over a year ago

There are some problems with the HERE Implementation. For one, you can't sudo through HERE documentation. See the end of thornelabs.net/2013/08/21/… for more information.

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