Linux commands often have long lists of options they support, many of which are single-letter mnemonics. These can be tricky to learn and remember, but their redeeming feature is their reusability: ...

Sometimes modifier keys on the keyboard may not work properly. If this is the case, you may find that either specific keys will not work, or certain combinations of keys will not work. In most cases ...

The simplest grep command looks like the one shown below. This “find string in file” command will show all the lines in the file that contain the string, even when that string is only part of a longer ...

Never underestimate the power of the Esc key to get you out of trouble. Say you’re taking a screen shot and managed to select part of your screen for that shot, only to discover it’s the wrong part – ...

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