Few of the time, we need to alter some particular text in multiple files, and opening and editing each file at a time is a killer. Here is a sweet simple command that uses the "Power of PERL" to make our life easier.

Command:-

perl -pi -w -e 's/facebook/worldofhacker/g;' /home/krokite/*.txt

What basically above command does is, It will find the word facebook in each "text/notepad" file under the directory "/home/krokite" and will replace that with worldofhacker.

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