Run grep upgrade /var/log/dpkg.log.
grep upgrade /var/log/dpkg.log
Mission 188
Package change triage
Use package logs to explain recent changes.
Troubleshootinggrepaptdpkg
Lesson 188 of 360
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Troubleshooting · 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 apt policy fake-openssh.
apt policy fake-openssh
Run dpkg -s fake-openssh.
dpkg -s fake-openssh
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Lesson support
What to notice while you play.
Use package logs to explain recent changes.
Run the commands in order and compare the outputs.
Junior operators build confidence by gathering evidence before changing systems.
- 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.