Date: Sat, 4 Feb 2006 00:37:00 -0500 From: Parv <parv@pair.com> To: freebsd-questions@freebsd.org Subject: Re: Script to generate names Message-ID: <20060204053659.GA2174@holestein.holy.cow> In-Reply-To: <20060203204323.GV1940@merkur.atekomi.net> References: <7.0.1.0.2.20060203110425.01744328@broadpark.no> <20060203204323.GV1940@merkur.atekomi.net>
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in message <20060203204323.GV1940@merkur.atekomi.net>,
wrote Will Maier thusly...
>
> On Fri, Feb 03, 2006 at 11:08:04AM +0100, Kristian Vaaf wrote:
> > I'm looking for pointers on how to make a simple shell script that
> > will generate new names based on words (one word per line) from
> > two different files, and output these to a third file.
>
> How bout this? Works on OpenBSD's sh; I assume it works on Free's sh
> as well. Might take a while to run, though...
...
> for WORD1 in $(< ${LIST1}); do
...
> done
It looks like OpenBSD (3.6) sh is pdksh (see "Shell startup" section;
process substitution is in "Substitution" section, paragraph 6) ...
http://www.freebsd.org/cgi/man.cgi?query=sh&apropos=0&sektion=0&manpath=OpenBSD+3.6&format=html
Process substitution does not work in FreeBSD 6 /bin/sh ...
# cat p
set -x
for i in $(< q); do echo "$i"; done
# cat q
polka
bikini
state
# sh p
+
... but in zsh ...
# zsh p
+/home/parv/p:2> i=polka
+/home/parv/p:2> echo polka
polka
+/home/parv/p:2> i=bikini
+/home/parv/p:2> echo bikini
bikini
+/home/parv/p:2> i=state
+/home/parv/p:2> echo state
state
Anyway, here is one solution for FreeBSD /bin/sh ...
in_1="list1"
in_2="list2"
save="list3"
[ -f "$save" ] && mv -f "$save" "$save--OLD"
{
while read word_1
do
while read word_2
do
printf "%s%s\n%s%s\n" \
"$word_1" "$word_2" \
"$word_2" "$word_1"
# If all the possible combinations of all the words are
# needed, remove or comment out the following "break".
break
done <"$in_2"
done <"$in_1"
} | sort -u >> "$save"
Kristian, try the above code with or without the "break", and
exchanging "$in_1" & "$in_2". If "$in_1" file is smaller than
"$in_2", then the script will end earlier (in comparison to reverse
situation).
- Parv
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