Every system admin has a moment when a simple “look at that file” turnsinto a three-hour hunt for information. That’s where the old friendsgrep, head, tail, cut, less and sed come in. They’re notfancy new tools; they’re tried-and-true helpers that can save you hoursof repetitive work.
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BASH is the GNU Project‘s shell that stands for the Bourne Again Shell. It is one of the most commonly used shells on the Linux and BSD systems. It is conform to the IEEE POSIX P1003.2/ISO 9945.2 standard. At the time of writing this article the current version of BASH is bash-5.2.
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