Line 4: Shows an example of another basic command called pwd which stands for print working directory. Line 5: As seen before, this line shows the result of the command previously issued. /tmp is our ...

Before we can talk about sed, awk, and grep, we need to talk about something a bit more basic—command-line redirection. Again, we're going to keep this very simple: Operator: ...

The command line isn't just for wise Linux beards. It's actually an awesome tool with almost limitless functionality. Here's a primer on how it works, and how you can do almost anything with it ...

There's a lot to learn about image files on the command line, from verifying file format to finding out where and when photos were taken and maybe even getting an unusual view of what they look like.