Date: Thu, 22 Jan 2009 13:33:45 +0100 From: Christoph Mallon <christoph.mallon@gmx.de> To: Oliver Fromme <olli@lurza.secnetix.de> Cc: freebsd-hackers@FreeBSD.ORG, xistence@0x58.com, cperciva@FreeBSD.ORG Subject: Re: freebsd-update's install_verify routine excessive stating Message-ID: <497867A9.7000801@gmx.de> In-Reply-To: <200901221217.n0MCHfY3086653@lurza.secnetix.de> References: <200901221217.n0MCHfY3086653@lurza.secnetix.de>
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Oliver Fromme schrieb:
> > cut -f 2,7 -d '|' |
> > grep -E '^f' |
> > cut -f 2 -d '|' |
> > sort -u > filelist
>
> It's unclear why there are two "cut" commands. The 7th
> field isn't used at all. Also, the -E option to grep
After the first cut the seventh field becomes the second:
echo 'a|b|c|d|e|f|g' | cut -f 2,7 -d '|'
So the second cut selects the original seventh field and fills it into
the file "filelist".
>
> So I would suggest to replace the whole pipe with this:
>
> awk -F "|" '$2 ~ /^f/ {print $2}' "$@" |
> sort -u > filelist
It should print $7, see above.
Christoph
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