#!/bin/bash

if [ "$1" = "-h" ]
    then 
        echo "do-plication <option> [directory to back up]"
    	echo
    	echo "Options:"
    	echo 
    	echo "-a append arcive to the back of the tape"
        echo "-c checks (lists) the contents of the n'th arcive {do-plication <option> <n>"
    	echo "-f Override the n'th arcive {do-plication <option> <n> [directory to back up]}"
        echo "-l Load the n'th arcive {do-plication <option> <n> [directory to back up]}"
        echo 
    exit 0
fi

# Going to the right directory 
# cd /media

case "$1" in 
    # overwrite the tape from the begining
    -a) 
        sudo mt -f /dev/nst0 eod;
        sudo mt -f /dev/nst0 status;
        echo "your arcive will be the file number"
        sudo screen -dmS do-plication tar -cvf /dev/nst0 "$2"
        true
    ;;

    -c)
        sudo mt -f /dev/nst0 asf "$2";
        sudo tar tvf /dev/st0 
        true 
    ;;

    -f)
        sudo mt -f /dev/nst0 asf "$2";
        echo "your arcive wil be $2";
        sudo screen -dmS do-plication tar -cvf /dev/nst0 "$3"
        true
    ;;

    -l) 
        sudo mt -f /dev/nst0 asf "$2";
        sudo screen -dmS do-plication tar xvf /dev/nst0  -C "$3"
        true
esac
exit $?