Manage multiple Git projects at once (check status, view logs...)

git-projects.sh

#!/bin/bash
set -e

#
# Execute the same git command in all project directories.
#
# Extra command line arguments are passed to git.
# If no arguments are specified, `git status` is assumed.
#
# File `projects.txt` has to contain paths to all project
# directories separated by a newline, and has to be located
# in the same directory as this script. Project paths are
# resolved relative to the script's location.
#
#
# Copyright 2017 Vitaly Potyarkin
#
# Licensed under the Apache License, Version 2.0
# http://www.apache.org/licenses/LICENSE-2.0
#




PROJECT_ROOT=$(dirname "$0")
PROJECT_LIST="$PROJECT_ROOT/projects.txt"


_resolve_path() {
    # Usage: _resolve_path RELATIVE [START]
    #
    # Resolve RELATIVE path to absolute; if START is given,
    # resolve from there.

    local START
    [ -z "$2" ] && START="$PWD" || START="$2"
    pushd "$START" > /dev/null || return $?
    readlink -m "$1"
    popd > /dev/null || return $?
}


if [ -z "$*" ]
then
    ACTION="status"
else
    ACTION="$*"
fi


sort -h "$PROJECT_LIST" | while read DIR
do
    echo -e "\n$DIR"
    DIR=$(_resolve_path "$DIR" "$PROJECT_ROOT")
    git -C "$DIR" $ACTION
done