This script allows you to launch a search by filesize on opensubtitles.org, with a simple right-click on a video file.

If it does not exist, create the .local/share/nautilus/scripts directory in your personnal folder (from Nautilus, you can use the Ctrl+H shortcut to display hidden files and be able to see the .local directory).

Save the subtitle file in .local/share/nautilus/scripts

Add execution permission to the script, in file properties, or running the command chmod +x ~/.local/share/nautilus/scripts/subtitle

Open Nautilus (aka “Files”). Select the film you want to search subtitles for, right-click > scripts > subtitle.
A browser window will open directly on opensubtitles.org with your search results.

NB:
By default, the script will search subtitles in english. To change the language, open the script and change the LANG variable.

Content of subtitle script:

#!/bin/bash

LANG=eng
#LANG=fr

FILE=$1
SIZE=$(stat -c %s $FILE)

xdg-open "http://www.opensubtitles.org/eng/search/sublanguageid-$LANG/moviebytesize-$SIZE"

To configure some things, you still have to edit a configuration file. To configure your desktop, a lot of online documentation still requires you to to edit /etc config files.

To help non linux experts, you can try the nautilus-gksu package. It permits you to edit any file as administrator with a simple right-click on the file.

Personnaly, I prefer launching Nautilus as root, as it allows more than simple file edition power (permission change, deleting…).

I create a launcher for this task, a bit like the Administrator Terminal in Applications > System Tools:

1. Right-click on the panel > Add to panel, Custom Application Launcher.
2. Name: Nautilus superuser
3. Command: gksu nautilus

Et voila.

You can remove some of the directories you don’t use, or rename some of them.

If you change their name, you can set their new place in your ~/.config/user-dirs.dirs file:

# This file is written by xdg-user-dirs-update
# If you want to change or add directories, just edit the line you're
# interested in. All local changes will be retained on the next run
# Format is XDG_xxx_DIR="$HOME/yyy", where yyy is a shell-escaped
# homedir-relative path, or XDG_xxx_DIR="/yyy", where /yyy is an
# absolute path. No other format is supported.
# 
XDG_DESKTOP_DIR="$HOME/Bureau"
XDG_DOWNLOAD_DIR="$HOME/telech"
XDG_TEMPLATES_DIR="$HOME/"
XDG_PUBLICSHARE_DIR="$HOME/public"
XDG_DOCUMENTS_DIR="$HOME/docs"
XDG_MUSIC_DIR="$HOME/zic"
XDG_PICTURES_DIR="$HOME/images"
XDG_VIDEOS_DIR="$HOME/cine"

Then restarting Nautilus should be sufficient. Otherwise restart your Gnome session.

References:

• http://www.freedesktop.org/wiki/Software/xdg-user-dirs
• aptitude show xdg-user-dirs