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
}

md5dir() {
    find $1 -type f -print0 | xargs -0 md5sum
}

ssh-fingerprint() {
	SERVER=$1
	PORT=${2:-22}

	ssh-keygen -E md5 -lf <(ssh-keyscan -p $PORT $SERVER 2>/dev/null)
}

SAVEDPROMPT="$PROMPT"
prefix() {
	export PROMPT="($1)$SAVEDPROMPT"
}