Create a new, shared, bare git repo in a given directory. Make it suitable for multiuser envs (assuming perms on that directory are set properly, and all your git people are in the group which owns that directory)

git-new-shared

#!/bin/bash
#
# Create a new, shared, bare repo in a given directory.
# Make it suitable for multiuser envs (assuming perms on that
# directory are set properly, and all your git people are in 
# the group which owns that directory)
#
# (C) 2009 Ian Gallagher <crash@neg9.org>
#

# Where the shared repositories live
SHARED_REPO_DIR="/var/cache/git"

# Umask to use - 002 makes files user/group writable, world readable.
# This is suitable if you have your commiters in the group that owns
# the repo dir, and want things like gitweb to be able to read the repos
UMASK="002"

# Ensure the first arg provided exists, it is the new repo name
test -z "$1" \
	&& echo 'Provide a repo name as the only argument!' \
	&& exit 1

# Replace pesky spaces with underscores, silly windows users!
project_name=$(echo "$1" | tr ' ' '_')

# Absolute path for new repo
project_dir="${SHARED_REPO_DIR}/${project_name}.git"

# Make sure the path doesn't already exist
test -d $project_dir \
	&& echo "Directory '$project_dir' already exists, aborting" \
	&& exit 1

# Create the directory and cd to it
mkdir -p $project_dir
cd $project_dir

# Set the umask
umask $UMASK

# Initialize the repository with the --bare option
git init --bare >/dev/null 2>&1

# Make sure it all worked, report failure
test $? -ne 0 \
	&& echo "Initialization of git repository in '$project_dir' failed :(" \
	&& exit 1

# Set group writable flag on the new directory
chmod g+rw $project_dir || exit 1

# We made it! Everything seems to have worked; report and exit cleanly
echo "Successfully created bare git repo in '$project_dir' - add it like so to your distributed repo:"
echo "git remote add share ssh://$(hostname -f)${project_dir}"

exit 0