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gnome-terminal package

How to print lines before and after a match found by grep in a document

Asked by Julianloui

Frequently I feel a need to display a few lines before and after a match found by grep in Linux. I'll appreciate anyone's help in this matter.

Julianloui

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Ubuntu gnome-terminal Edit question
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Solved by:
Thomas Krüger
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Best Thomas Krüger (thkrueger) said : 		#1

Add the parameters -A<num> and -B<num>, where <num> is the number of lines. e.g.:
fgrep -A3 -B1 error mail.log
will print 1 line before and 3 lines after a line with "error" in mail.log.

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Julianloui (julianloui) said : 		#2

Thomas,

Thanks very much. Your suggestion works beautifully. One never learns enough about Linux.

Julianloui

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Julianloui (julianloui) said : 		#3

Thanks Thomas Krüger, that solved my question.