Videos
Linux & the command line
Pick a topic to watch.
12 video lessons
2:08
The shell and the prompt
There are no icons here and nothing to click. Everything you are about to do, you do by typing its name.…
2:16
Moving around
A graphical file manager shows you where you are. Here nothing does, so the first skill is knowing. Fold…
2:02
Reading files
Opening a file to look at it should not need an application, and on the command line it does not. The si…
2:38
Creating and removing
You cannot right-click and choose New Folder. Two commands do the whole job, and they are short. Two com…
2:11
Wildcards
You have twenty photographs to rename and you are not going to type twenty names. A wildcard is a symbol…
1:54
Saving output to files
Normally a command's output appears on screen. Add an arrow and a filename and it does not — and the fir…
2:01
Pipes — joining commands
This is the idea the command line is built on. A pipe sends one command's output straight into sort, as …
2:05
Searching with grep
A log file has forty thousand lines in it and you need the four that mention your program. Grep searches…
1:59
Finding files with find
You have known l s since lesson two, and it has one limit: it shows only what is right here, in this one…
2:26
Sorting and columns
A list in the order the machine happened to produce it is not a list anybody can use. Sort arranges line…
2:20
File permissions
Run l s dash l and every line starts with ten characters that look like line noise. They are not. They a…
2:04
Programs and processes
Two words that sound the same and are not. A program is a file sitting on disk, doing nothing. A process…