xsha1.sh

#!/bin/bash
ECHO=echo
if [ "x$DISPLAY" != x ]
then
    if type -P zenity &>/dev/null 
    then
        ECHO='zenity --info --text'
    elif type -P xmessage &>/dev/null 
    then
        ECHO='xmessage'
    else
        echo 'wtf :('
    fi
fi

while [ "x$1" != x ]
do
    cd "$(dirname "$1")"
    if grep -q SHA1 <<<"$1"
    then
        $ECHO "$(sha1sum -c $1)"
    elif grep -q MD5 <<<"$1"
    then
        $ECHO "$(md5sum -c $1)"
    else
        $ECHO "What is $1?"
    fi
    shift
    cd -
done