Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
It's a testament to how far Linux has come that users today don't typically have to use the command line if they don't want to. Such is the quality of the graphical user interfaces in many modern Linux distributions that there's simply no need, in general.
Yet the command line can be a highly efficient way of getting things done in the Linux world--it's often a much simpler, easier and more direct method than clicking through all the menu choices, in fact.
I believe fear of the command line is one of the top mistakes newcomers to Linux sometimes make. For that reason, let's look at some of the main commands any Linux user should know.