David Rothenberger wrote:
> I do it with the following script which uses /proc.
That's an interesting script but it has a couple of deficiencies. It
does not list services with names that start with a "." and it breaks on
services with a space in the name when -n is used. It's also very slow
with -n, as there's no need to invoke awk once for each service, and
using forking /bin/cat to read each description is costly.
Here's a slightly tweaked version that fixes the above problems and runs
about 30 times faster. (0m13.722s down to 0m0.489s on my system at
least.)
#!/bin/sh
usage() {
cat <<EOF
usage: `basename $0` [-n] [--]
-n: Display names
EOF
}
displayNames() { false; }
while getopts :n OPT; do
case $OPT in
n|+n)
displayNames() { true; }
;;
*)
usage
exit 2
esac
done
shift `expr $OPTIND - 1`
srvKey=/proc/registry/HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services
if displayNames; then
find $srvKey/ -maxdepth 1 -mindepth 1 -type d -printf '%f\n' | \
sort -f | \
( while read s; do
descr=""
[ -f "$srvKey/$s/DisplayName" ] && \
read descr <$srvKey/$s/DisplayName;
echo -e "$s\t$descr"
done ) | \
awk -F \\t '{printf("%-30s: %s\n", $1, $2)}'
else
find $srvKey/ -maxdepth 1 -mindepth 1 -type d -printf '%f\n' | \
sort -f
fi
---
Brian
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