Just a short and simple note here to new Ubuntu users...
When I first started using Ubuntu, this error message that I received drove me crazy. I could not understand why it would not work for. I was running a command like: sudo unmount /dev/sda3. Then I realized that I had been totally stupid, and had miss read it. The command should have been: sudo umount /dev/sda3 umount, not unmount.
I know this is a pretty dumb post for the more experienced Ubuntu users out there, but I just remembered how much it annoyed when when I first started. If you are like me, and still type unmount, and remember it's not, you could always set up an alias for it. View this post to see how you would do this: http://jamsubuntu.blogspot.com/2008/12/how-to-create-your-own-aliases.html
Tags: Command Line