#!/bin/sh

FILE="$1"
RES="$FILE"

if [ `echo $FILE | cut -b1` = "/" ]; then
    true
else
    RES="$PWD/$FILE"
    test -d "$RES" && RES="$RES/"
    RES=`echo "$RES" | sed "s,/\(\./\)*,/,g"`

# note: this will only strip 1 /path/../ from RES, i.e. given /a/b/c/../../../, it returns /a/b/../../
    RES=`echo "$RES" | sed "s,\(/[^/]*/\)\.\./,/,g"` 

    RES=`echo "$RES" | sed "s,//,/,g" | sed "s,/$,,"`
fi
echo $RES #return