Description: Learn about env vars, the most common ones, and how to work with them in Linux.
Skill level: Beginner
Description: Learn about file descriptors, the three standard ones, and what tools you can use to work with them.
Skill level: Intermediate
Description: Learn how pipes work and how to connect commands using them.
Skill level: Beginner
Description: Learn how to redirect input and output when running a program from the shell.
Skill level: Beginner
Description: Learn about signals, the most common ones, and how to send them in Linux.
Skill level: Intermediate