PeterOn your system, it is perfectly possible that you might have more than one version of a particular application installed. If you've custom compiled an application or have concurrent versions of one bit of software, this might be an issue for you.
Now when a program is in your PATH (in one directory of a list of special directories on your system), you can execute it just by typing its …
PeterAs good as one can get using the Linux command line, it is often a lot easier to perform certain tasks using a graphical interface than it is with the good old command line.
If you are a command line junkie, though, have you ever wondered whether it might be possible to a whole day without using any graphical tools?
Well that is exactly what Luke at Terminally Incoherent has …
PeterOftentimes on your Ubuntu system you will need to launch applications using sudo (or a graphical form of it) if you're changing critical system settings or doing other tasks that need special privileges.
However, once you have opened up a GUI tool under sudo, it can be difficult to tell the difference between an application running with normal privileges and one running at the root level.
PeterA nice, easy and quick Linux trick for you today and that's how to get some technical information about your CPU. The Linux kernel obviously knows all sorts of things about your hardware while it's running and quite a bit of this information is made available to the end user.
There's actually a virtual filesystem (it doesn't exist on your disk, it's created when your computer boots up and updated …