Clear it in 3 steps
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Start the environment
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Investigate the target
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Submit the flag
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Linux-Log Rotation. Searching Compressed Historical Logs
Mission
Some older log files have been gzip-compressed by log rotation. Use a command that searches inside compressed files without extracting them first to find the flag.
Hints
Hint 1 Show
Use ls to check for files with a .gz extension
Hint 2 Show
zgrep can search inside compressed files without extracting them
Hint 3 Show
Combining zcat and grep achieves the same result