Mission 250

Package security deep review

Connect package state to recent package logs.

Security administration
8 minutes Advanced Lesson 250 of 360
aptdpkggrep
Lesson 250 of 360 0/360 lessons 0/17 missions Security administration · 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.

Check openssh policy

Run apt policy fake-openssh.

apt policy fake-openssh
List openssh files

Run dpkg -L fake-openssh.

dpkg -L fake-openssh
Find upgrade log

Run grep upgrade /var/log/dpkg.log.

grep upgrade /var/log/dpkg.log
Lesson support

What to notice while you play.

Objective

Connect package state to recent package logs.

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.

apt|dpkg|brew

Inspect simulated Linux and macOS package metadata.