how to take ios backup on external drive | apple script

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set theOutputFolder to choose folder with prompt "Select the External folder for Backup !"

set theOutputFolder to POSIX path of theOutputFolder

set the ExFolder to findAndReplaceInText(theOutputFolder, " ", "\\ ")

on findAndReplaceInText(theText, theSearchString, theReplacementString)

set AppleScript's text item delimiters to theSearchString

set theTextItems to every text item of theText

set AppleScript's text item delimiters to theReplacementString

set theText to theTextItems as string

set AppleScript's text item delimiters to ""

return theText

end findAndReplaceInText

set msg to "Error"

tell application "Finder"

set displayappath to ("~/Library/Application\\ Support/MobileSync/Backup2" as text)

if exists displayappath then

set msg to displayappath & " Exists - Oops , seems like you have already ran the script."

display dialog msg

quit

end if

end tell

--display dialog "Folder will be created on " & theOutputFolder & "Backup"

--display dialog theOutputFolder

tell application "Terminal"

activate

if not (exists window 1) then reopen

set window_id to id of first window whose frontmost is true

--> CREATING FOLDER IN EXTERNAL DRIVE FOR BACKUP

do script ("mkdir -p " & ExFolder & "Backup") in window id window_id of application "Terminal"

--> RENAMING EXISTING BACKUP FODLER TO BACKUP2

do script ("mv ~/Library/Application\\ Support/MobileSync/Backup ~/Library/Application\\ Support/MobileSync/Backup2") in window id window_id of application "Terminal"

--> CREATING SYMBOLIC LINK TO THE EXTERNAL DRIVE FOLDER

do script ("ln -s " & ExFolder & "Backup ~/Library/Application\\ Support/MobileSync/") in window id window_id of application "Terminal"

display dialog "Folder created on " & theOutputFolder & "Backup - for iOS Backup"

end tell