01-inpath

#!/bin/bash
# inpath--Verifies that a specified program is either valid as is
#   or can be found in the PATH directory list.

in_path()
{
   # Given a command and the PATH, try to find the command. Returns
   #   0 if found and executable, 1 if not. Note that this temporarily 
   #   modifies the IFS (internal field separator) but restores it 
   #   upon completion.

   cmd=$1        ourpath=$2         result=1
   oldIFS=$IFS   IFS=":"

   for directory in “$ourpath”
   do
     if [ -x $directory/$cmd ] ; then
       result=0      # if we're here, we found $cmd in $directory
     fi
   done

   IFS=$oldIFS
   return $result
 }

 checkForCmdInPath()
 {
   var=$1

   if [ "$var" != "" ] ; then
     if [ "${var:0:1}" = "/" ] ; then
       if [ ! -x $var ] ; then
         return 1
       fi
     elif !  in_path $var "$PATH" ; then
       return 2
     fi 
   fi
}

#if [ $# -ne 1 ] ; then
#  echo "Usage: $0 command" >&2 ; exit 1
#fi

#checkForCmdInPath "$1"
#case $? in
#  0 ) echo "$1 found in PATH"                   ;;
#  1 ) echo "$1 not found or not executable"     ;;
#  2 ) echo "$1 not found in PATH"               ;;
#esac

#exit 0