"Hanoi": Find the Multitasking Users
Scenario: "Hanoi": Find the Multitasking Users
Level: Medium
Type: Do
Access: Paid
Description: The Hanoi office has a Linux server with a large number of user accounts and groups. The system administrators need to identify which users belong to multiple groups for better access management.
Given two files, `users.txt` and `groups.txt`, create a new file `/home/admin/multi-group-users.txt` containing the usernames of users who belong to more than one group, one username per line, sorted alphabetically.
The `users.txt` file contains a list of usernames, one per line. The `groups.txt` file contains group names and their members, in the format `group_name:user1,user2,user3`.
Root (sudo) Access: True
Test: Running md5sum /home/admin/multi-group-users.txt returns dc0ae86caae7125d21df03a0ab29d8ae
The "Check My Solution" button runs the script /home/admin/agent/check.sh, which you can see and execute.
Time to Solve: 15 minutes.