[PLUG] shell scripting problem

[David Fleck]

On Thu, 6 Jun 2002, Matt Alexander wrote:

> I have about 200 names in /etc/group that I want to remove.  They're all
> under a generic "users" group.  I have a file that contains the names that I
> want to remove, and I'm looking for a wizbangwowzerz *nix way to read in
> all those names and delete them from the group file.  I'll also need to
> delete the comma after each name.

How about:

#!/bin/sh

namefile=$1

infile="/etc/group"
temp1="temp1"
temp2="output"

cp ${infile} ${temp1}

while read user;
do
	sed -e "s/${user},//" -e "s/[^^]${user}//" ${temp1} > ${temp2}
	cp ${temp2} ${temp1}
done < $namefile

sed -e "s/,$//" ${temp1} > ${temp2}
rm ${temp1}

exit 0


the script would be given an argument representing the names list file,
and would put the output into 'output'; e.g., 'script.sh namelist'.

--
 David Fleck
 dcf at aracnet.com