[ SHAD-OS STANDALONE ] Main file

#!/bin/bash

ver="0.4A"
date
echo "STARTING SHAD-OS $ver"
echo "CURRENT DIR:"
pwd
echo "READY"
sleep 5
cd USER
clear

echo " ** SHAD-OSv$ver **"

for (( ; ; ))
do
    read input

    if [ $input = HELP ]
            then
        echo "-[ShadOS Help]-----------------"
        echo "Welcome to ShadOS"
        echo "The only OS running in ubuntu's"
        echo "terminal and using BASH!"
        echo ""
        echo "Type PROGRAMS to see avalible"
        echo "programs."
        echo ""
        echo "Type EDIT to edit a program or"
        echo "text file. Have fun! :)"
        echo "------------------------------"
            elif [ $input = PROGRAMS ]
        then
        echo "-[PROGRAMS]-----"
        echo "HELP    DIR"
        echo "RUN     EDIT"
        echo "CLEAR   EXIT"
        echo "CWD     DELETE"
        echo "RENAME  PASTEBIN"
        echo "MKDIR   MEDIA"
        echo "ZIP     "
        echo "----------------"
        elif [ $input = DIR ]
        then pwd
        ls
        elif [ $input = RUN ]
        then echo "Input file to run:"
        read runfile
        chmod +x $runfile
        sudo ./$runfile
        chmod -x $runfile
        elif [ $input = EDIT ]
        then nano
        elif [ $input = MEDIA ]
        then echo "Media to play:"
        read medianame
        mplayer -vo caca -autosync 1000 $medianame
        elif [ $input = CLEAR ]
        then clear
        echo " ** SHAD-OSv$ver **"
        elif [ $input = READ ]
        then echo "File to read:"
        read readfile
        clear
        echo " ** SHAD-OSv$ver ** "
        cat $readfile
        elif [ $input = CWD ]
        then read newdir
        cd newdir
        elif [ $input = RENAME ]
        then echo "File to rename:"
        read file1
        echo "New name:"
        read file2
        mv $file1 $file2
        elif [ $input = MOVE ]
        then echo "File to move:"
        read file1
        echo "Move to:"
        read file2
        mv $file1 $file2
        elif [ $input = DELETE ]
        then echo "File to delete:"
        read file1
        rm $file1
        elif [ $input = MKDIR ]
        then echo "Name folder:"
        read folder
        mkdir $folder
        elif [ $input = PASTEBIN ]
        then echo "Get a file or upload a file? (I/O)"
        read -N 1 option
        if [ $option = I ]
        then echo "PASTEBIN CODE:"
        read code
        echo "LOCATION"
        read location
        wget -0 $location http://paste.ubuntu.com/$code/plain
        elif [ $option = O ]
        then echo " "
        echo "LOCATION:"
        read location
        pastebinit $location
        fi
        elif [ $input = ZIP ]
        then echo "Compress or decompress? I/O"
        read mode
        if [ $mode = I ]
        then echo "Archive:"
        read archive
        echo "File/Folder:"
        read filename
        zip $archive $filename
        elif [ $mode = O ]
        then echo "Archive:"
        read archive
        unzip $archive
        fi
        elif [ $input = EXIT ]
        then break
        else
        echo "UNKNOWN COMMAND: $input"
    fi
done