mkpasswd() {
    LEN=${1:-30}
    tr -cd ' -~' < /dev/urandom | fold -w $LEN | sed 1q
}

mkpasswd2() {
    LEN=${1:-30}
    base64 < /dev/urandom | fold -w $LEN | sed 1q
}

gitall() {
    ROOT=$(pwd)
    find . -name '.git' | while read repo; do
        repodir=$(dirname "$repo")
        reponame=$(basename "$repodir")
        cd "$repodir"

        echo "==================================="
        echo "===> $reponame"
        echo "==================================="

        git $@

        cd "$ROOT";
    done
}