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Top Forums Shell Programming and Scripting Loop and grepping into a file Post 26983 by LivinFree on Monday 26th of August 2002 07:00:55 PM
Old 08-26-2002
Instead of using a loop and grep -v each line, try this:
Code:
[...]

grep -vf $IP_LIST $SOURCE_DIR/ips > $SOURCE_DIR/ipaccess 

[...]

That does away with the loop altogether...
See man grep for more info on the -f flag.

Last edited by LivinFree; 08-26-2002 at 11:36 PM..
 

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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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