Run stat /srv/www/index.html.
stat /srv/www/index.html
Mission 73
Public and private files
Compare web-readable and private-note permissions.
Permissions and usersstatchmod
Lesson 73 of 360
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Permissions and users · 8 minutes
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learner@clairos:/home/learner $
Unix ops lab: type a command, press Enter
Instructions
8 minutes
Click any instruction for the command details, the why, and the common mistake to avoid.
Run chmod 644 /srv/www/index.html.
chmod 644 /srv/www/index.html
Run chmod 600 /home/learner/notes/todo.txt.
chmod 600 /home/learner/notes/todo.txt
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Lesson support
What to notice while you play.
Practice choosing modes based on file purpose.
Use 644 for public web content and 600 for private notes.
Security is context-sensitive; not every file should be locked the same way.
- Making public web files unreadable.
- Leaving private notes too open.
Reference
Commands in this lesson.
chmod <mode> <path>
Change a simulated numeric permission mode.
stat <path>
Show lab file details.