Looking for a way to search for text in files on Ubuntu? You should get a grip on the Ubuntu grep command.

Ubuntu grep command searches input FILE or FILES for lines containing a match to the given PATTERN. By default, grep prints the matching lines.

For your information grep stands for Global Regular Expression Print.

So do I need to know regular expression to use grep?

For simple searching you don’t need to be a regular expression guru. Remember the simplest regular expression (regex) is simply a word, or more generally, a string of characters.
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