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Shell Programming and Scripting
puzzling regexp
Post 302078512 by jad on Saturday 1st of July 2006 09:29:04 AM
07-01-2006
Thanks guys for your help.
I should've mentionned earlier that i was more interested in understanding why my command didn't work than in how actually getting the IP.
So anyway Reborg you were right it has to do with grep only understanding ultra basic regexp and as Vish_indian said, egrep is the way to go in that case.
So by using egrep it just works fine !
PS:
i need to work more on awk i guess
...
I should've mentionned earlier that i was more interested in understanding why my command didn't work than in how actually getting the IP.
So anyway Reborg you were right it has to do with grep only understanding ultra basic regexp and as Vish_indian said, egrep is the way to go in that case.
So by using egrep it just works fine !
PS:
i need to work more on awk i guess
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LEARN ABOUT NETBSD
zfgrep
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