On Wed, May 18, 2016 at 10:25:02PM +0100, aide...@gentoo.org wrote:
> From: Amadeusz Żołnowski <aide...@gentoo.org>
>
> awk doesn't have the -i option like sed and if editing file in place is
> desired, additional steps are required. eawk uses tmp file to make it
> look to the caller editing happens in place.
NAK.
1.
If your AWK command has an error, then this clobbers the file, a better
variant, with die, would be:
awk "$@" "$f" >"${tmpf}" || die "awk failed..."
cp -f "${tmpf}" "$f" || die "copy back failed"
> # @USAGE: <file> <args>
This calling format is also a problem if they intended to pass multiple
files to the command, or if they do so accidentally.
Eg, an unprotected glob in the first argument, eg:
eawk foo* '/foobar/{$1="x"; print $0}'
If foo1 and foo2 existed, this would be considered as:
awk foo2 /foobar/{$1="x"; print $0}' foo1
which really will NOT have the desired effect.
--
Robin Hugh Johnson
Gentoo Linux: Dev, Infra Lead, Foundation Trustee & Treasurer
E-Mail : robb...@gentoo.org
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