#!/bin/sh
#
# Copyright 1995, by Hewlett-Packard Company
#
# The code in this file is from the book "Portable Shell
# Programming" by Bruce Blinn, published by Prentice Hall.
# This file may be copied free of charge for personal,
# non-commercial use provided that this notice appears in
# all copies of the file.  There is no warranty, either
# expressed or implied, supplied with this code.
#
# NAME
#    findcmd - search for a command
#
# SYNOPSIS
#    findcmd command
#
# DESCRIPTION
#    This command searches the directories listed in the
#    PATH variable for the command.  It makes a reasonable
#    attempt to find the same command as would be found by
#    the shell, except that it does not find functions or
#    built-in commands:
#
#    1. If the command name contains a /, the PATH variable
#       is not used.
#    2. The directories in the PATH variable are searched in
#       order, from left to right.
#    3. Files without execute access are ignored even if the
#       file name matches the command name.
#    4. The search concludes when the first match is found.
#
# RETURN VALUE
#    0    Command was found
#    1    Usage error
#    2    Command was not found
#
############################################################
CMDNAME=`basename $0`
if [ $# -ne 1 ]; then
     echo "Usage: $CMDNAME command" 1>&2
     exit 1
fi

FOUND=FALSE
COMMAND=$1

case $COMMAND in
     */* )     if [ -x "$COMMAND" -a ! -d "$COMMAND" ]; then
                    echo "$COMMAND"
                    FOUND=TRUE
               fi
               ;;

     * )       IFS=:
               for dir in `echo "$PATH"           |
                           sed -e 's/^:/.:/'      \
                               -e 's/::/:.:/g'    \
                               -e 's/:$/:./'`
               do
                    if [ -x "$dir/$COMMAND" -a ! \
                         -d "$dir/$COMMAND" ]
                    then
                         echo "$dir/$COMMAND"
                         FOUND=TRUE
                         break
                    fi
               done
               ;;
esac

if [ "$FOUND" = "FALSE" ]; then
     echo "$COMMAND not found"
     exit 2
else
     exit 0
fi