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usage of grep cmd

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Name: urmilaravishankar
Date: September 30, 2007 at 07:05:35 Pacific
OS: linux
CPU/Ram: AMD anthlon,32 MB
Comment:

Hi
Kindly give me the exact usage of grep such that it should display only lines with single words.
In awk its cat filename|awk 'NF<2 {print $0}' will display lines with single word only



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Response Number 1
Name: Guy
Date: October 6, 2007 at 07:48:51 Pacific
Reply:

This should get you what you want most of the time:

grep -E "^[A-Za-z0-9]+$" filename


0

Response Number 2
Name: Luke Chi
Date: February 7, 2008 at 14:13:38 Pacific
Reply:

$ grep "^[^ ]*$" infile.txt

Example:

$ cat infile.txt
This is a test
file
to test how
grep can
grep the
lines
with only one
word.

$ grep "^[^ ]*$" infile.txt
file
lines
word.

Luke Chi


0

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