File get-upstream-patches of Package autofs

#! /bin/bash
#
# get autofs upstream patched from
# http://www.kernel.org/pub/linux/daemons/autofs/v5/patches-$version/
# and cat them in one bzipped file
# autofs-$LATEST_RELEASE-upstream-patches-$DATE
# where DATE is the date of the top patch in the series
#
# usage: get-upstream-patches

LATEST_RELEASE="5.0.9"
NEXT_RELEASE="5.0.10"

BASE=http://www.kernel.org/pub/linux/daemons/autofs/v5/patches-$NEXT_RELEASE/
SERIES=patch_order-$LATEST_RELEASE
WGET_OPTS=-q
PATCHDIR=upstream-patches-$LATEST_RELEASE
CURRENT=$PWD
DELIMITER=$(mktemp)

test -x /usr/bin/wget || { echo "wget is missing!"; exit 1; }
test -x /usr/bin/bzip2 || { echo "bzip2 is missing!"; exit 1; }
test -x /usr/bin/sed || { echo "sed is missing!"; exit 1; }

test -d $PATCHDIR || mkdir $PATCHDIR
pushd $PATCHDIR > /dev/null 2>&1
rm -f $SERIES

echo "retrieving series file $SERIES"
wget $WGET_OPTS $BASE/$SERIES
sed -i '/^#/d' $SERIES

while read patch
do
	if test -r "$patch"; then
		echo "$patch ...skipping"
	else
		echo "$patch ...retrieving"
		wget $WGET_OPTS $BASE/$patch
	fi
done < $SERIES

LAST=$(sed -e "/^$/d" $SERIES | tail -n 1)
DATE=$(stat -c "%y" $LAST | cut -d' ' -f 1 | sed "s/-//g")

echo > $DELIMITER
echo "----------" >>  $DELIMITER
echo >> $DELIMITER

cat $SERIES $DELIMITER $(cat $SERIES) > $CURRENT/autofs-$LATEST_RELEASE-upstream-patches-$DATE

rm -f $DELIMITER

bzip2 $CURRENT/autofs-$LATEST_RELEASE-upstream-patches-$DATE

popd > /dev/null 2>&1