Terminal · Easy

Lesson 1 · On the house

Absolute vs relative paths

/, ~, ., .., and path joining.

Lesson 2

ls flags (-l -a -h)

Long listing, hidden entries, human sizes.

Lesson 3

mkdir -p nested trees

Parents on demand; no error if exists.

Lesson 4

Globs (* ? [])

Shell expands patterns before the command runs.

Lesson 5

Redirects (> >> 2>)

Stdout, append, and stderr files.

Lesson 6

Pipes (|)

Stdout of one command into stdin of the next.

Lesson 7

head, tail, wc

Peek ends of files; count lines words bytes.

Lesson 8

grep basics

Find lines that match a pattern.

Lesson 9

Reading permissions

ls -l mode bits; chmod sketch.

Lesson 10

Easy capstone

Paths, globs, redirects, pipes, grep, wc.