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UNIX : grep command examples


GREP (Global Regular Expression and Print) is a utility used to search for lines containing the string in a file.

Syntax of GREP is :  grep [option] [pattern] [ files]

1. Search for lines in a file that contains a word .

> grep "word" <filename>

2. How to search for more than one matching string in a file?

>egrep "a|b|c" <filename>
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