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linuxbash

Bash ignoring error for a particular command

I am using following options

set -o pipefail
set -e

In bash script to stop execution on error. I have ~100 lines of script executing and I don't want to check return code of every line in the script.

But for one particular command, I want to ignore the error. How can I do that?

Solution

  • The solution:

    particular_script || true

    Example:

    $ cat /tmp/1.sh
particular_script()
{
    false
}

set -e

echo one
particular_script || true
echo two
particular_script
echo three

$ bash /tmp/1.sh
one
two

    three will be never printed.

    Also, I want to add that when pipefail is on, it is enough for shell to think that the entire pipe has non-zero exit code when one of commands in the pipe has non-zero exit code (with pipefail off it must the last one).

    $ set -o pipefail
$ false | true ; echo $?
1
$ set +o pipefail
$ false | true ; echo $?
0