prevents committing to certain git branches. I made this because I would accidentally commit to master instead of a feature branch. This could cause a mess with dependencies and gerrit. Not committing to master was the easiest solution for that. How To Use: put this in <repo>/.git/hooks/pre-commit

unallowed-branches.sh

#!/bin/bash
#
# An example hook script to verify what is about to be committed.
# Called by "git commit" with no arguments.  The hook should
# exit with non-zero status after issuing an appropriate message if
# it wants to stop the commit.
#
# To enable this hook, rename this file to "pre-commit".

array_contains() {
    local array="$1[@]"
    local seeking=$2
    local in=1
    for element in "${!array}"
    do
        if [[ $element == $seeking ]]
        then
            in=0
            break
        fi
    done
    return $in
}

# These are branches that should not be committed to directly
UNALLOWED_BRANCHES=("master" "air" "5.0" "6.0" "4.8")

if git rev-parse --verify HEAD >/dev/null 2>&1
then
	against=HEAD
else
	# Initial commit: diff against an empty tree object
	against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
fi

currentbranch=$(git branch --color=NEVER | grep "*" | awk '{print $2}')
array_contains UNALLOWED_BRANCHES $currentbranch && branchok="false" || branchok="true"

# If you want to allow committing on master branch set this variable to true
allowmastercommit=$(git config hooks.allowmastercommit)

# Redirect output to stderr.
exec 1>&2

if [ "$allowmastercommit" != "true" ] && [ "$branchok" == "false" ]
then
    echo "Error: Attempt to commit to an unallowed branch: $currentbranch"
    echo
    echo "Use a feature branch instead."
    echo "Disable this check by using:"
    echo 
    echo "  git config hooks.allowmastercommit true"
    echo
    exit 1
fi

# If there are whitespace errors, print the offending file names and fail.
exec git diff-index --check --cached $against --