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Overlord - simple git hooks launcher

Overlord

This simple script, used as a git hook, executes all scripts in the corresponding hook-name.d directory.

It is also capable of daemonizing itself for a limited set of git hooks where the scripts execution will not affect the outcome of the action.

Install

Drop this script into your hooks directory. Another option is to clone this directory, and point your core.hooksPath config variable to it.

Example (replace the directories paths with your own):

export HOOKS_ROOT=path/to/your/hooks/root/dir
cd "$HOOKS_ROOT"
# either direct download
#mkdir -p overlord && wget https://raw.githubusercontent.com/amartos/overlord/master/overlord -O overlord/overlord
# or clone the repo
git clone https://github.com/amartos/overlord
cd path/to/your/git/repo
git config core.hooksPath "$HOOKS_ROOT"/overlord

Then, symlink the overlord script as a git hook, and create the corresponding hook-name.d directory alongside the overlord script.

cd path/to/your/hooks/root/dir/overlord
export HOOK=hook-name
ln -s overlord "$HOOK" && mkdir "$HOOK".d

The script is able do this by itself, for multiple hooks at once. Just call it directly, passing the names of all the hooks to init.

cd path/to/your/hooks/root/dir/overlord
./overlord first-hook-name second-hook-name # ...

Usage

To print the manual:

./overlord -h

Now, any script within the hook-name.d directories will be executed when the corresponding hook is triggered, transparently receiving both the input and arguments of the hook.

Moreover, you can execute the hook-name script yourself to trigger all of them manually.

Daemonized hooks

For hooks that do not affect the outcome of the action (even through their exit status), the overlord script will execute all the hook-name.d scripts asynchronously, making those hooks non-blocking. However, the background execution will stop immediately if the current hook-name.d script exits with a non-zero status code.

The list of daemonized hooks can be found in the NOTES section of the script manual ./overlord -h.