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Start the environment
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Investigate the target
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Linux-User Investigation. Filtering the Target User with awk
Mission
Several users are registered on this system. Parse /etc/passwd with awk to find the one matching a specific condition, then check the hidden file in that user's home directory.
Hints
Hint 1 Show
cat /etc/passwd shows information for all users
Hint 2 Show
awk -F: makes it easy to work with colon-separated fields
Hint 3 Show
Once you identify the target user, check ls -la ~username for hidden files