Previous boot logs

bash

journalctl -b -1

Explanation

Very useful after crash or reboot analysis.

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Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.

Same sheet · prioritizing Time and Boot Filters

Show logs from the current boot only.

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Show known boot sessions.

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Filter by starting time.

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Filter by start and end times.

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Show current-boot kernel messages.

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Print the journal from oldest to newest by default.

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