GUIs are great—we wouldn’t want to live without them. But if you’re a Mac or Linux user and you want to get the most out of your operating system (and your keystrokes), you owe it to yourself to get ...

If you're new to the UNIX operating system, especially if you're familiar with Windows, you'll find that the file access control mechanisms might not be exactly what you expect. File permissions and ...

One of the problems that seems to plague nearly all file systems — Unix and others — is the continuous buildup of files. Almost no one takes the time to clean out files that they no longer use and ...

There are four ways to specify that a file is in UNIX System Services when you use the FILENAME statement or FILENAME function: You can also use these specifications in combination. For example, you ...

is the name of a UNIX command, executable program, or shell script to which you want to route output or from which you want to read input. The command(s) must be enclosed in either double or single ...

People who have had bad experiences on Windows disks that performed poorly after they had become very fragmented often wonder if they need to apply some kind of periodic analysis and defragmentation ...

We have looked at the fuser command before to display information about what users or processes are keeping file systems busy. This command can save you a lot of time tracking when you need to quickly ...