Question

how can one turn off the error messages of a bash script?

I want to turn it off, and handle the expected ones by myself

For instance, when it does not find some files, to show my specific error message.

Thanks

Answer 1

You don’t want to turn them off – you want to capture them and parse them so you can show your own message. (Though if the script is well-written, you don’t actually have to capture them, just check the exit code.) You’ll need to redirect stderr

script_to_run 2> captured_stderr
# now examine the contents of captured_stderr

If you can do it just with the exit code, you can redirect to /dev/null instead.

For more about redirection, try the short version or long version here.