linux/Unix tools for multiline grep

admin — Wed, 02 Dec 2009 17:16:21 +0000

grep -A 2 SearchString # find and return SearchString and the two lines after the line that matches
grep -B 3 SearchString # find and return SearchString and the three lines before the line that matches

also,
pcregrep
pcregrep -M ‘a\nb’ files…

redirecting standard error (stderr) and standard output (stdout) to a file

admin — Sat, 23 May 2009 22:37:20 +0000

Capturing both errors and normal list output from ls, with “long” and recursive options set, to a file called /tmp/allout :

ls -lR > /tmp/allout 2>&1

HandsomePlanet » unix

linux/Unix tools for multiline grep

redirecting standard error (stderr) and standard output (stdout) to a file