gitr

#!/bin/sh

# Exit on error
set -o errexit

usage() {
    echo """
recursive git

Runs the given Git command recursively in all the Git repositories located under
the current directory.

Usage:
$ cd ~/version/project-group
$ $0 GIT-COMMAND

Examples:
$ $0 status
$ $0 pull
$ $0 add package.json
$ $0 commit
$ $0 push
""" 1>&2
}

checkArgs() {
    if [ $# -lt 1 ]; then
        usage; exit 3
    fi
}

checkArgs "$@"

# Store current working directory
cwd=$(pwd)

# RED=$(tput setaf 1)
# GREEN=$(tput setaf 2)
BOLD=$(tput bold)
NORMAL=$(tput sgr0)

# find won't descend into .git directories, but it still does descend into git
# repositories, looking for other .git folders. And that could be a costly
# operation.
for dotgit_dir_path in $(find . -name .git -type d -prune)
do
    # Restore current working directory for successive runs
    cd "$cwd"

    # Change to the Git repository directory
    cd "$dotgit_dir_path/.."
    printf "\n"
    printf "%s" "$BOLD"
    printf "%s" "$(pwd)"
    printf "%s" "$NORMAL"
    printf " ← git %s" "$*"
    printf "\n"

    # Some commands like "git grep" returns with a non-zero status when nothing
    # is found, thus the "|| true" to ensure the line is always a success.
    git "$@" || true
    printf "\n"
done