Linux Labs
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First steps / Stage 9 of 15

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Step 7 of 8 · lab · 15 mineasy

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The end of a nightly log, its error lines and their count, each in its own file: tail and grep.

Situation

The backup ran overnight, and its log is ~/backup.log. In the morning a colleague asks how the backup ended and whether there were any errors. More than one program writes to this log, and each records errors in its own way.

Task

Make it so that:

  1. ~/last.txt holds the last 5 lines of ~/backup.log;
  2. ~/errors.txt holds every log line with the word error in any case, exactly as it is written in the log;
  3. ~/count.txt holds the number of those lines, a single number.

Lab · on your own

No commands are given in this lab: type them in the terminal yourself. Goals are checked on the machine after every command.

Goals

0 of 3
  • ~/last.txt holds the last five log lines
  • ~/errors.txt holds every line with the word error in any case
  • ~/count.txt holds the number of those lines
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Starts the machine node1 · Ubuntu 24.04

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Lab goals

0 of 3
  • ~/last.txt holds the last five log lines
  • ~/errors.txt holds every line with the word error in any case
  • ~/count.txt holds the number of those lines
node1 Ubuntu 24.04

Lab goals

0 of 3
  • ~/last.txt holds the last five log lines
  • ~/errors.txt holds every line with the word error in any case
  • ~/count.txt holds the number of those lines
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