How to exit if a command failed?

Question

I am a noob in shell-scripting. I want to print a message and exit my script if a command fails. I\'ve tried:

my_command && (echo \'my_command failed         


        

Answer 1

If you want that behavior for all commands in your script, just add

  set -e 
  set -o pipefail

at the beginning of the script. This pair of options tell the bash interpreter to exit whenever a command returns with a non-zero exit code.

This does not allow you to print an exit message, though.