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regular expressions

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Grep is one among the system administrator’s “Swiss Army knife” set of tools, and is extremely useful to search for strings and patterns in …

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In this article, we will discuss advanced Awk functionality, including string- and time-manipulation functions, associative arrays and user-defined functions. These can be very useful …

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UNIX-like operating systems have numerous powerful utilities accessible via the command-line and shell-scripting, which are flexible enough to operate in a variety of problematic …