TrueCrypt mounting script

#!/bin/bash

#######################
# by Keraxel          #
# http://keraxel.net  #
# License: GNU/GPL v3 #
#######################

    if [ $1 ]; then
        if [ $1 = "--mount" ] || [ $1 = "-m" ]
        then
            if [ $2 ]
            then
                if [ $2 = "internal" ]
                then
                    echo "Mounting internal partition..."
                    truecrypt --text --slot=1 --keyfiles=/home/dupa/what3vr.sprld -p "" /dev/sda5 /media/truecrypt1
                elif [ $2 = "external" ]
                then
                    echo "Mounting external HDD..."
                    truecrypt --text --slot=2 --keyfiles=/home/dupa/what3vr.sprld -p "" /dev/sdb1 /media/truecrypt2
                else
                    echo "Mounting internal partition and external HDD..."
                    truecrypt --text --slot=1 --keyfiles=/home/dupa/what3vr.sprld -p "" /dev/sda5 /media/truecrypt1
                    truecrypt --text --slot=2 --/home/dupa/what3vr.sprld -p "" /dev/sdb1 /media/truecrypt2
                fi
            fi
        elif [ $1 = "--dismount" ] || [ $1 = "-d" ]
        then
            if [ $2 ]
            then
                if [ $2 = "internal" ]
                then
                    echo "Dismounting internal partition..."
                    truecrypt --text --force -d /dev/sda5
                elif [ $2 = "external" ]
                then
                    echo "Dismounting external HDD..."
                    truecrypt --text -d --force /dev/sdb1
                else
                    echo "Dismounting internal partition and external HDD..."
                    truecrypt --text -d --force /dev/sda5
                    truecrypt --text -d --force /dev/sdb1
                fi
            fi
        else
echo "
Usage:
option          description
--mount <drive>     Mounts a <drive>
-m <drive>
--dismount <drive>  Dismounts a <drive>
-d <drive>

Drives:
drive       description
internal    Internal HDD Partition
external    External HDD
"
        fi
    else
        echo "Use --help for information about usage."
    fi