#!/bin/bash

LOCK=/run/lock/gtk-bookmark-update-lock

# make sure to avoid parallel execution by using mkdir as lock
while true; do
   mkdir $LOCK 2>/dev/null
   if [ $? = 0 ]; then
      break
   fi
done

echo "file:/// /" > ~/.gtk-bookmarks.tmp # add root at the beginning

cat ~/.gtk-bookmarks | fgrep -v ///media/ | fgrep -v "file:/// /" | egrep -v '^$' >> ~/.gtk-bookmarks.tmp 2>/dev/null
ls -1 /media | sort | while read LINE; do
   echo "file:///media/$LINE $LINE" >> ~/.gtk-bookmarks.tmp
done

mv -f ~/.gtk-bookmarks.tmp ~/.gtk-bookmarks

rmdir $LOCK