sfs-duplication-glitches/do-plication

#!/bin/bash

if [ "$1" = "-h" ]
    then 
        echo "do-plication <option> <enable/disable Encryprion> <n> [directory to back up] [path to key file] [ key file descriptoin(only if key not alreadey created) ]"
    	echo
    	echo "Options:"
    	echo 
    	echo "-a append arcive to the back of the tape put 0 as n"
        echo "-c checks (lists) the contents of the n'th arcive"
    	echo "-f Override the n'th arcive"
        echo "-l Load the n'th arcive"
        echo 
        echo 
        echo "Enable/Disable Encryprion"
        echo "-e Encrypt "
        echo "-n noEncrypt"
    exit 0
fi

if [ "$2" = "-e" ]
    then 
        ls "$4" > /dev/null
        if [$? -gt 0]
            then 
                echo "key not fount creating key"
                stenc -g 256 -k "$5" -kd "$6";
                stenc -f /dev/nst0 -e on -k "$5" -a 1 --ckod
            else 
                echo "key fount using key"
                stenc -f /dev/nst0 -e on -k "$5" -a 1 --ckod
        fi 

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 "$3"
        true
    ;;

    -c)
        sudo mt -f /dev/nst0 asf "$3";
        sudo tar tvf /dev/st0 
        true 
    ;;

    -f)
        sudo mt -f /dev/nst0 asf "$3";
        echo "your arcive wil be $3";
        sudo screen -dmS do-plication tar -cvf /dev/nst0 "$4"
        true
    ;;

    -l) 
        sudo mt -f /dev/nst0 asf "$3";
        sudo screen -dmS do-plication tar xvf /dev/nst0  -C "$4"
        true
esac
exit $?