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I'm trying to test a bash script that restarts it's child process when the child process has crashed.
How do I make a bash script crash on purpose?
(I'm trying to test the script that restarts the process)
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$1 means an input argument and -z means non-defined or empty. You're testing whether an input argument to the script was defined when running the script. Follow this answer to receive notifications.
bash [filename] runs the commands saved in a file. $@ refers to all of a shell script's command-line arguments. $1 , $2 , etc., refer to the first command-line argument, the second command-line argument, etc. Place variables in quotes if the values might have spaces in them.
A built-in bash command that is used to execute a command when the shell receives any signal is called `trap`. When any event occurs then bash sends the notification by any signal. Many signals are available in bash. The most common signal of bash is SIGINT (Signal Interrupt).
Do you mean something like this?
# this simulates a script returning exit code of 1
sh -c 'exit 1'
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