which() (was Re: Multiple executables in path)
Maarten Litmaath
maart at cs.vu.nl
Fri Feb 1 05:42:12 AEST 1991
In article <4545 at softway.sw.oz.au>,
peterc at softway.sw.oz.au (Peter Chubb) writes:
)My favourite solution, for the Bourne shell, at least, is:
)
)#!/bin/sh
)# which -- print full pathname of executable args.
)
)for i
)do
) IFS=":"
) for j in $PATH
) do
) test -x $j/$i && echo $j/$i
) exit 0
) done
)done
)exit 1
This script doesn't work at all! You meant this:
test -x $j/$i && {
echo $j/$i
exit 0
}
Furthermore this script has the same problems as other scripts that
invoke `test', as discussed before.
--
Temporary files like /tmp/sh$$ are an abomination.
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