Daily backup file with the date in the filename

Question

Hello,
I like to backup the same file every day of the week. And add the date in the copied filename (for example "meta09-O4-04.rtf") to automate and schedule I can use cronnix. But adding the date in the filename doesn't work for me.
As you can see in the script the backup file must be copied in a directory (for example "vis")that is in the same directory as the main file.
Can some one help me on this?
backupFileToFolder("Macintosh HD:Users:gast:Documents:meta.rtf", "Macintosh HD:Users:gast:Documents:vis:")
on backupFileToFolder(startFile, targetFolder)
set startFile to startFile as alias
set targetFolder to targetFolder as alias
tell application "Finder"
duplicate ("Macintosh HD:Users:gast:Documents:meta.rtf") to ("Macintosh HD:Users:gast:Documents:vis:")
end tell
end backupFileToFolder

Answer 1

But adding the date in the filename doesn't work for me.
Might help if you showed how you were trying to add the date.
That said, it shouldn't be hard to do. There are several ways of getting the date in the format you want, either via AppleScript or a simple shell command:
AppleScript:
set curDate to (get current date)
set dateStr to getYear(curDate) & "-" & getDay(curDate) & "-" & getMonth(curDate)
on getMonth(theDate)
set cM to month of theDate as integer
return text -2 through -1 of ("0" & cM)
end getMonth
on getDay(theDate)
set cD to day of theDate as text
return text -2 through -1 of ("0" & cD)
end getDay
on getYear(theDate)
set cY to year of theDate as text
return text -2 through -1 of cY
end getYear
Note this is a little more verbose than it needs to be, but it has the flexibility of formatting each date element (year, month, day) as you like.
If you want a shell version:
set dateStr to do shell script "date +%y-%d-%m"
Now you have the dateStr with the date you want, so it's easy to rename the file.
Just replace your duplicate command with the following:
set backupFile to duplicate startFile to folder targetFolder
set n to name of backupFile -- get the current file name
set nE to name extension of backupFile -- get its filename extension
set baseName to text 1 through (-1 + (length of nE)) of n -- work out the name without the extension
set newName to baseName & dateStr & "." & nE -- work out the new name using the dateStr
set name of backupFile to newName -- and rename the file