diplodocus.org Git - nmh/blob - etc/mhn.find.sh

   1 #! /bin/sh
   2 #
   3 # mhn.find.sh -- check if a particular command is available
   4 #
   5 # $Id$
   6
   7 if test -z "$2"; then
   8     echo "usage: mhn.find.sh search-path program" 1>&2
   9     exit 1
  10 fi
  11
  12 # PATH to search for programs
  13 SEARCHPATH=$1
  14
  15 # program to search for
  16 PROGRAM=$2
  17
  18 PGM= oIFS="$IFS" IFS=":"
  19 for A in $SEARCHPATH; do
  20
  21     # skip the directories `.' and `..'
  22     if test "$A" = "." -o "$A" = ".."; then
  23         continue
  24     fi
  25
  26     # if program was found in /usr/local/bin, then
  27     # just echo program name, else echo full pathname
  28     if test -f "$A/$PROGRAM"; then
  29         if test "$A" = "/usr/local/bin"; then
  30             PGM="$PROGRAM"
  31         else
  32             PGM="$A/$PROGRAM"
  33         fi
  34
  35         echo "$PGM"
  36         exit 0
  37     fi
  38 done
  39 IFS="$oIFS"
  40