mkgmap-update

#!/bin/bash
# config
DIR="http://www.mkgmap.org.uk/snapshots"
FILE="mkgmap-latest.tar.gz"

cd ~/gps/temp

ts_old=`stat -c %Y $FILE || echo $?`
wget -N $DIR/$FILE
ts_new=`stat -c %Y $FILE || echo $?`

if [ $ts_old -lt $ts_new ] ; then
  rm -rf ~/gps/mkgmap-r*
  tar -xvzf $FILE -C ~/gps
fi