Block specific git commands

gistfile1.sh

function git() {
    blocked=(merge pull)
    if [ -n "$1" ]; then
        for b in "${blocked[@]}"; do
            if [ "$1" == "$b" ]; then
                printf "\"It is easier to prevent bad habits than to break them.\"\n—Benjamin Franklin\n"
                return
            fi
        done
    fi
    command git "$@"
}