Mission 228

Service user ownership

Compare service users with files they serve.

Permissions and users
8 minutes Admin Lesson 228 of 360
catstatgrep
Lesson 228 of 360 0/360 lessons 0/17 missions Permissions and users · 8 minutes
0%
Continue View profile
Ops lab terminal Training lab
New learnerrank 0XP 0%complete
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.

Find service user

Run grep www-data /etc/passwd.

grep www-data /etc/passwd
Inspect web file

Run stat /srv/www/index.html.

stat /srv/www/index.html
Find service group

Run grep www-data /etc/group.

grep www-data /etc/group
Lesson support

What to notice while you play.

Objective

Compare service users with files they serve.

Hint

Run the commands in order and compare the outputs.

Why it matters

Junior operators build confidence by gathering evidence before changing systems.

Common mistakes
  • Skipping the inspection step.
  • Assuming one command tells the whole story.
Reference

Commands in this lesson.

cat <file>

Print text file contents.

grep [-i] <text> <file>

Find literal text inside a file.

stat <path>

Show lab file details.