add seafile update script

seafile/update.sh

+#!/bin/sh
+VERSION="$1"
+
+fatal()
+{
+    echo "$@" >&2
+    exit 1
+}
+
+major()
+{
+    echo "$1" | sed -e "s|\(.*\)\.[0-9]|\1|g"
+}
+
+minor()
+{
+    echo "$1" | sed -e "s|.*\.\([0-9]\)|\1|g"
+}
+
+[ -n "$VERSION" ] || fatal "empty VERSION (run with version as arg)"
+
+MAJOR="$(major $VERSION)"
+PREV="$(readlink seafile-server-latest | sed -e "s|seafile-server-\(.*\)|\1|g")"
+# "
+PREVMAJOR="$(major $PREV)"
+BMAJOR=$(major $MAJOR)
+
+# check first version number
+[ "$(major $PREVMAJOR)" = "$BMAJOR" ] || fatal "$PREVMAJOR != $MAJOR"
+
+FIRSTSEQ=$(minor $PREVMAJOR)
+LASTSEQ=$(minor $MAJOR)
+
+[ -n "$MAJOR" ] || fatal "MAJOR is empty"
+[ -n "$PREVMAJOR" ] || fatal "PREVMAJOR is empty"
+
+#wget https://download.seadrive.org/seafile-server_${VERSION}_x86-64.tar.gz || fatal
+#erc seafile-server_${VERSION}_x86-64.tar.gz || fatal
+
+echo "Upgrade from $PREV to $VERSION ..."
+
+serv monit stop
+/etc/init.d/seafile stop
+/etc/init.d/seahub stop
+cd seafile-server-$VERSION/upgrade || fatal
+
+if [ "$FIRSTSEQ" != "$LASTSEQ" ] ; then
+    for i in $(seq $FIRSTSEQ $(($LASTSEQ-1))) ; do
+        ./upgrade_${BMAJOR}.${i}_${BMAJOR}.$(($i+1)).sh || fatal
+    done
+fi
+./minor-upgrade.sh || fatal
+
+/etc/init.d/seafile start
+/etc/init.d/seahub start
+serv monit start