A lot of information is available about individual files on a Unix system. For example, the ls -l command will display the permissions matrix and ls -i will display a file’s inode. But, if we want to ...

In the olden days of Unix, each file had an owner, a group, and a notion of “everybody else”. These entities could be granted read, write and/or execute permission — and that was as far as it went. If ...

A small amount of descriptive data (metadata) that is added to a computer file by the user or network administrator. It is maintained by the file system but is not part of the file's regular set of ...

Editor’s note: The following review is part of Macworld’s GemFest 2012 series. Every weekday from mid June through mid August, the Macworld staff will use the Mac Gems blog to briefly cover a favorite ...