make shell commands available in git hook

Question

The goal is to make some set of commands available to the user after they clone/checkout repo.

the git hook file

#!/bin/sh
echo $PWD/dev-commands.sh
source $PWD/dev-commands.sh

the command I want to make available after the git hook names dev-commands.sh

#!/bin/sh
function greet() {
  echo Hello
}

this does not seem to make the command available. if I run source dev-commands.sh in the directory manually it does make the greet commands availble..

any tips?

Answer 1

Sourced functions are available in the shell that sourced them, not its parent shells. That's why when you write a shell script, it can use its own functions without worrying about interfering with what its invoker's commands mean.

( doit() { echo hi; }; doit ); doit

for instance, will say hi and then very probably complain -bash: doit: command not found or an equivalent message because the parens were there to put doit into a subshell, which has its own environment, just like git hooks.

Altering someone's shell namespace on the fly without their active cooperation can and will be accurately described as malware.

Include a setup command they can source if they want.