CODEWITHSUNDEEP
bashssh
Omar
Omar

Reputation: 8145

exit not working as expected in Bash

I use SSH Secure Shell client to connect to a server and run my scripts.

I want to stop a script on some conditions, so when I use exit, not only the script stops, but all the client disconnects from the server!, Here is the code:

if [[ `echo $#` -eq 0 ]]; then
        echo "Missing argument- must to get a friend list";
        exit
fi

for user in $*; do
        if [[ !(-f `echo ${user}.user`) ]]; then
                echo "The user name ${user} doesn't exist.";
                exit
        fi
done

A picture of the client:
enter image description here

Why is this happening?

Upvotes: 0

Views: 1258

Answers (3)

l0b0
l0b0

Reputation: 58768

exit returns from the current shell - If you've started a script by running it directly, this will exit the shell that the script is running in.

return returns from a function or sourced file (TY Dennis Williamson) - Same thing, but it doesn't terminate your current shell.

break returns from a loop - Similar to return, but can be used anywhere within a loop to stop processing more items. This is probably what you want.

Upvotes: 2

BVAD
BVAD

Reputation: 75

if you are running from the current shell, exit will obviously exit from the shell and disconnect you. try running it in a new shell ( use a . before the script) or else use 'return' instead of exit

Upvotes: 0

mata
mata

Reputation: 69012

You use source to run the script, this runs it in the current shell. That means that exit terminates the current shell and with that the ssh session.

replace source with bash and it should work, or better put

#!/bin/bash

on to of the file and make it executable.

Upvotes: 2

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