1)Searching with Grep
One of the simplest ways to analyze logs is by performing
plain text searches using grep. grep is a command line tool that can search for
matching text in a file, or in output from other commands. It’s included by default
in most Linux distributions and is also available for Windows and Mac.
To perform a simple search, enter your search string
followed by the file you want to search. Here, we search the authentication log
for lines containing “user hoover”.
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