pipefail.md

Pipefail option

• set -o pipefail
• BASH normally only looks at the exit code of the last command of a pipeline
• This behavior is not ideal as it causes the -e option to only be able to act on the exit code of a pipeline’s last command
• This particular option sets the exit code of a pipeline to that of the rightmost command to exit with a non-zero status, or to zero if all commands of the pipeline exit successfully.

#### Without Pipefail

filename

bash ./examples/options/options_without_pipefail.sh
echo $?

#### With Pipefail

filename

bash ./examples/options/options_with_pipefail.sh
echo $?

### References

• https://www.tldp.org/LDP/abs/html/options.html
• https://www.gnu.org/software/bash/manual/html_node/The-Set-Builtin.html
• https://vaneyckt.io/posts/safer_bash_scripts_with_set_euxo_pipefail/