I installed CodeSourcery on Ubuntu Linux and am a little bit stuck: PATH is OK but the program does not appear on the dashboard or software centre. Maybe it is something within Ubuntu I should change but I do not know how.
As far as I know there is no gui component to this toolchain (or none worth paying attention to), just command line executables such as
arm-none-eabi-gcc arm-none-eabi-ld arm-none-eabi-objdump
etc, or different prefix names depending on which one you installed.
You could type long and cryptic commands using these to build, examine, or debug programs manually. Most however automate the process by creating a Makefile for their program, or configuring an IDE to run the toolchain components in the needed way.
If you are using an IDE, that is what you might launch from a menu, but sooner or later you will find yourself needing to do some things from the command line.