CW Project Based On File Management

#!/bin/sh -e
    echo "Starting Script"
    sleep 1
    set -e

    while true; do

    Choice=$(zenity --width=400 --height=350 --entry --title="File Manager" --text="Select Any Option\n\nn.    Create New File\n\ne.    Edit File \n\np.    Change Permission\n\nc.    Copy a File\n\nd.    Remove a File\n\nm.    Move a File\n\nr.    Rename a File\n\nl.    List of Files\n\nf.    Find File\n\nq.    Quit")
        case "$Choice" in
           c)   f1=$(zenity --entry --text="Enter File Name To Copy")

            if [ -f $f1 ]
                then
                f2=$(zenity --entry --text="Enter New File Name")
                    cp $f1 $f2
            zenity --info --text="File Copied.."
                else
                        zenity --error --text="File Does Not Exist.."
                            fi
                ;;
           d)   r1=$(zenity --entry --text="Enter File Name To Delete")
                if [ -f $r1 ]
                then
                   rm $r1
            zenity --info --text="File Deleted.."
                else
                   zenity --error --text="$r1 File Does Not Exist.."
             fi
             ;;
         m)
                f1=$(zenity --entry --text="Enter File Name To Move")
                if [ -f $f1 ]
                then
                f2=$(zenity --entry --text="Enter Destination Path")
                      mv $f1 $f2
                      zenity --info --text="File Moved.."
                      else

                    zenity --error --text="$f1 File Does Not Exist.."
                    fi

                    ;;
      l)x=$( ls|zenity --width=400 --height=350 --text="" --text-info --title="List Of Files" continue )


          ;;


      q)  zenity --warning --text="Exiting....."
            exit
             ;;
      n)fname=$(zenity --entry --text="Enter File Name With Extension")
        if [ -f $fname ]
        then
         zenity --error --text="$fname File Already Exist.."
        else
        gedit $fname
        zenity --info --text="$fname Created.."
        clear
        fi ;;

      p)fname=$(zenity --entry --text="Enter File Name With Extension")
        if [ -f $fname ]
        then
            perm==$(zenity --entry --text="Enter Permission Code")
            chmod $perm $fname
             zenity --info --text="Permission Change To $perm"
            clear
        else
        zenity --error --text="$fname File Not Exist.."

        clear
        fi
        ;;
      f)fname=$(zenity --entry --text="Enter File Name With Extension To Find")
        if [ -f $fname ]
        then
         zenity --info --text="$fname File Found.."
        clear
        else
        zenity --error --text="$fname File Not Found.."

        clear
        fi
        ;;

        e) fname=$(zenity --entry --text="Enter File Name With Extension")
        if [ ! -f $fname ]
        then
         zenity --error --text="$fname File Not Found.."
        else
        gedit $fname

        clear
        fi ;;
        m)
                f1=$(zenity --entry --text="Enter File Name To Rename")
                if [ -f $f1 ]
                then
                f2=$(zenity --entry --text="Enter New File Name")
                      mv $f1 $f2
                      zenity --info --text="File Renamed.."
                      else

                    zenity --error --text="$f1 File Does Not Exist.."
                    fi

                    ;;
      *)
            zenity --warning --text="Invalid Input" ;;
        esac
    done