A much easier method is to try the public beta version, as it comes in both tarball form for any Linux version, and in a .deb format specifically for Ubuntu. Download either 32- or 64-bit, depending on your version of Ubuntu (run uname -a at the command line, and look for either i386 (32-bit) or x86_64 (64-bit) in the output), then at the command line navigate to where you downloaded it and run

sudo dpkg -i sublime-text_build-XXXX_YYYY.deb

where XXXX is the build number (currently 3059) and YYYY is either i386 or amd64. This will automatically install Sublime Text in /opt/sublime-text, create a /usr/bin/subl command, and automatically create /usr/share/applications/sublime_text.desktop along with the associated icons. It should also create a launcher in your Unity taskbar.

Sublime Text 3 is the future of the editor, and every day more and more plugins and extensions are released or revised on Package Control that are compatible with ST3. If you purchase a license, which is required for long-term use after evaluation, you will also have access to the bleeding edge development releases which are released more frequently than the public beta versions and so are more up-to-date as far as new features and bug fixes are concerned. Sublime Text 2 is basically a finished product as far as development is concerned, and while it is quite stable for most people, many plugins do not work with it, especially those under active development that depend on some of the advanced features that ST3 provides.

It's worth noting that ST2 and ST3 can coexist peacefully on the same system, as the plugins and data are stored separately. You obviously can't have two subl commands, but you can rename one of them subl2 or subl3, for example.

If you still need to create a .desktop file for ST2, its contents should be as follows. Please note that it assumes you moved the Sublime Text 2 directory from where you unpacked it to /opt/sublime_text_2. If this is not the case, please update the directory paths accordingly.

[Desktop Entry]

Version=1.0

Type=Application

Name=Sublime Text 2

GenericName=Text Editor

Comment=Sophisticated text editor for code, markup and prose

Exec=/opt/sublime_text_2/sublime_text %F

Terminal=false

MimeType=text/plain;

Icon=/opt/sublime_text_2/Icon/48x48/sublime_text.png

Categories=TextEditor;Development;

StartupNotify=true

Actions=Window;Document;



[Desktop Action Window]

Name=New Window

Exec=/opt/sublime_text_2/sublime_text -n

OnlyShowIn=Unity;



[Desktop Action Document]

Name=New File

Exec=/opt/sublime_text_2/sublime_text --command new_file

OnlyShowIn=Unity;

Save the file as sublime.desktop, then use sudo to move it to /usr/share/applications. You may have to log out and then back in, but it should now be available in Unity.

Good luck, and if you have any questions please let me know.