How to get exit code of a progarm in Shell?

neo_in_matrix · 09-22-2005, 12:18 PM

If want to know how to get the exit code of a program in shell scripts. Thanks.

Dark_Helmet · 09-22-2005, 12:56 PM

The exit code is stored in a special variable: $?

I would suggest storing the exit status in a variable immediately after executing the command to avoid any confusion. For instance:

Code:

#!/bin/bash

ls /opt > /dev/null
exit_status=$?

if [ ${exit_status} -eq 0 ] ; then
  echo "ls command completed successfully"
else
  echo "ls failed; exit status of ${exit_status}"
fi

neo_in_matrix · 09-22-2005, 01:46 PM

Wow, thanks!