wp-up.sh

#!/bin/bash

DSTDIR=$1

WPLATESTGZ=$(mktemp)

wget -O $WPLATESTGZ http://wordpress.org/latest.tar.gz
#cp -v latest.tar.gz $WPLATESTGZ

WPLATESTDIR=$(mktemp -d)

tar -C $WPLATESTDIR -xzf $WPLATESTGZ

rm $WPLATESTGZ

WPLATESTDIR="$WPLATESTDIR/wordpress/"
WPLATESTDIRSZ=${#WPLATESTDIR}

for a in `find $WPLATESTDIR`; do
    srct=`stat -c %Y $a`
    srcd=`stat -c %Y $DSTDIR/${a:WPLATESTDIRSZ}`
    if [ $srct -gt $srcd ]; then
        echo "update ${a:WPLATESTDIRSZ}"
        cp $a $DSTDIR
    fi
done

rm -r $WPLATESTDIR