Stage 4 · Lesson 8 of 8
Disk space and system information
A full causes strange failures: builds crash, stop and Git cannot save. df -h shows how much free space each disk has. du -sh * shows how big each item in the current folder is, and du -sh * | sort -h lists them with the biggest last.
On developer machines, space usually goes to node_modules folders, images, and old . A few other quick checks help too: uname -a shows the kernel version, free -h shows memory on Linux and uptime shows how busy the machine has been. These are the first checks when a machine misbehaves.
Common trapdeleting files at random to free space instead of measuring what is actually large.
A question to check yourself, an AI practice session and 1 cheat sheet entry come when you add the roadmap to your account. Add it
Resources for this stage
Start with· follow one of these
- BookFreeThe Linux Command Line
William Shotts · Beginner
Its chapters on permissions and processes are the clearest free explanation of this stage
- GuideFreeThe Linux Command Line for Beginners (Ubuntu)
Canonical · Beginner
Includes a short, careful section on the superuser and when to use sudo
Practise
Keep handy
Also worth your time
- roadmap.sh: LinuxGo deeper
See the users, permissions and process management branches of the Linux map