Regular Expression Pocket Reference, 2nd Edition

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Name

egrep

egrep [options] pattern files

egrep searches files for occurrences of pattern, and prints out each matching line.

Example

$ echo 'Spiderman Menaces City!' > dailybugle.txt
$ egrep -i 'spider[- ]?man' dailybugle.txt
Spiderman Menaces City!

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