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X Rezise and Rotare (xrandr) is a utility available in your Linux system for reseting and resizing your screen resolution. It is a command line utility. so if your display disapperaed ?? No problem you can do it from a Terminal (Press Ctrl+Alt+f1).
Byzanz is a free opensource GNOME based Command-Line utility to capture desktop recording software for linux. This should probably be the coolest command-line utility that I have seen in recent days. Byzanz records your desktop session to an animated GIF. You can record your entire screen, a single window, an arbitrary region or even follow the cursor.
The first of the bashshell.net "5 Days of find" series, this tutorial breaks down the basics of the find command. With the Linux find utility, you can perform powerful searches on just about any criterion you can think of, and then, from the same command-line entry, invoke another utility to do whatever you need to do with the results.
Sometimes you need to add a new array on HP Servers on running system (you can't boot SmartStart DVD to run Array Configuration Utility). In that situation you need to configure the array with command line utility called hpacucli.
GNU screen is a very neat tool that’s included in most Unix-like operating systems. It’s a utility that acts as a basic command line window manager, so you can maintain several open terminal sessions within one physical terminal.
FSlint is a simple yet very easy to use utility to find and clean various forms of lint on a filesystem. i.e., unwanted or problematic cruft in your files or file names. For example, one form of lint it finds is duplicate files. FSlint operates in both GUI and Command Line mode and the GUI is very straight forward to use especially there isn’t much of hidden menu options