#!/bin/sh
date=`date +%Y%m%d%k%M%S`
path=$1    # Path to use is given on the command line

# Use last directory in ${path} as the filename to save 
# to.  (Could use awk or something else here, but I'm 
# more familer with Perl).
# 
save_file=`perl -e '$file=pop; $file=~m!/(.*)$!; print $1' ${path}`

tar -zxf ${save_file}-${date}.tar.gz ${path}