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Top Forums UNIX for Dummies Questions & Answers Display lines not starts with # Post 302403325 by murugaperumal on Friday 12th of March 2010 05:29:35 AM
Old 03-12-2010
If you put the ^ symbol inside the character class, it will not negate the pattern. It means , match the patter starting with. So the following code is not at all work.

Code:
grep [^#] file

Instead of that you should use the following code
Code:
grep ^[^#] file

Here the symbol ^ outside of the character class negate the pattern. The symbol ^ Inside character class represent the starting.
 

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ZGREP(1)						    BSD General Commands Manual 						  ZGREP(1)

NAME
zgrep, zegrep, zfgrep -- print lines matching a pattern in gzip-compressed files SYNOPSIS
zgrep [grep-flags] [--] pattern [files ...] zegrep [grep-flags] [--] pattern [file ...] zfgrep [grep-flags] [--] pattern [file ...] DESCRIPTION
zgrep runs grep(1) on files or stdin, if no files argument is given, after decompressing them with zcat(1). The grep-flags and pattern arguments are passed on to grep(1). If an -e flag is found in the grep-flags, zgrep will not look for a pattern argument. zegrep calls egrep(1), while zfgrep calls fgrep(1). EXIT STATUS
In case of missing arguments or missing pattern, 1 will be returned, otherwise 0. SEE ALSO
egrep(1), fgrep(1), grep(1), gzip(1), zcat(1) AUTHORS
Thomas Klausner <wiz@NetBSD.org> BSD
December 28, 2003 BSD
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