Example: cp /dev/null myhouse.jpg/rsrc & rm myhouse.jpg When using “get info” in Finder, it reports file size by two numbers, for example, “592KB on disk (601,189 bytes)”. To be safe, one can delete the resource fork first. Using /bin/rm is probably doing the right thing. How to delete a file properly (including resource fork) using the command line? See also: Perl Script for Removing Mac Resource Fork Suppose you want to delete resource fork in “file.png”.

(but if you append your file name with “/rsrc”, then “ls” will report the resource fork's file size.) How to delete a file's resource fork using command line? rwxrwxrwx 1 xah staff 87410 file.png/rsrc The file size reported by the unix command “ls”, does it count resource fork? Here's a command line log as a example: ◆ ls -l file.png If the reported file size is 0, then it has no resource fork. The new syntax isįor example, ls -l file.png/rsrc. Note: since Mac OS X 10.7 (released in 2011), the old syntax for accessing resource fork no longer works. Use the ls -l command with /rsrc suffixed to the file name. How to use the command line to find out if a file has resource fork?

However, program executable files such as those “.app” may still need the resource fork intact to work, and many programs, including Apple's software, still create resource fork as of. The use of resource fork is discouraged for normal files. This means, you should not simply remove resource fork data. For example, Quick Time movie files used to store main movie data in the resource fork. Some app store main data in resource fork. The data fork is the file's main content, the resource fork stores some extra data such as icon, version number, embedded images, image thumbnail, and much more. Resource fork is a feature of the Mac's file system HFS Plus, and older file systems used by Mac such as HFS and “Macintosh file system”.Ī file has 2 parts: ① data fork, ② resource fork. The info on this page is tested on Mac OS X 10.4.x and OS X 10.6.x. This page is tips about Mac OS X's command line tools about Mac's resource fork.

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