Mission 249

Account inventory review

Inventory users, groups, and service accounts.

Security administration
8 minutes Advanced Lesson 249 of 360
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Lesson 249 of 360 0/360 lessons 0/17 missions Security administration · 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.

List users

Run cut -d : -f 1 /etc/passwd.

cut -d : -f 1 /etc/passwd
Find web user

Run grep www-data /etc/passwd.

grep www-data /etc/passwd
Show learner identity

Run id.

id
Lesson support

What to notice while you play.

Objective

Inventory users, groups, and service accounts.

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.

grep [-i] <text> <file>

Find literal text inside a file.

cut -d <char> -f <n>

Extract delimited fields from text.