* Thomas Hood
| What is the best way to run a command if and only if it is on the PATH?
findcommand() {
while [ "$#" -ge 1 ]; do
P="$PATH"
while [ "$P" ]; do
D=${P%%:*}
P=${P#*:}
if [ "$D" = "$P" ]; then
P=
fi
if [ -z "$D" ]; then
D=.
fi
if [ -x "$D/$1" ]; then
echo "$D/$1"
return
fi
done
shift
done
}
should do what command -v does. (Actually, it does a bit more, as it
can do stuff like:
: [EMAIL PROTECTED] ~ > findcommand foo bar baz xterm
/usr/X11R6/bin/xterm
(which is _very_ useful for me when I'm doing something approaching
per-user cross-host alternatives (similar to what update-alternatives
provides).)
--
Tollef Fog Heen ,''`.
UNIX is user friendly, it's just picky about who its friends are : :' :
`. `'
`-
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