https://bioinformaticsonline.com/snippets/view/41352/exit-bash-script-when-any-command-fails? https://bioinformaticsonline.com/snippets/view/41352/exit-bash-script-when-any-command-fails Sat, 07 Mar 2020 01:10:17 -0600 https://bioinformaticsonline.com/snippets/view/41352/exit-bash-script-when-any-command-fails This can actually be done with a single line using the set builtin command with the -e option. #1------------------------------------------------------------------------ # exit when any command fails #Putting this at the top of a bash script will cause the script to exit if any commands return a non-zero exit code. set -e #all other commands #2------------------------------------------------------------------------ #Other fancy way, by keeping the track of each command # exit when any command fails set -e # keep track of the last executed command trap 'last_command=$current_command; current_command=$BASH_COMMAND' DEBUG # echo an error message before exiting trap 'echo "\"${last_command}\" command filed with exit code $?."' EXIT #3--------------------------------------------------------------------- #With a subs exit_on_error() { exit_code=$1 last_command=${@:2} if [ $exit_code -ne 0 ]; then >&2 echo "\"${last_command}\" command failed with exit code ${exit_code}." exit $exit_code fi } # enable !! command completion set -o history -o histexpand]]> Jit