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ubuntu@llt-desktop:~$
ubuntu@llt-desktop:~$ find /var/log -name "*.log" -mtime -1
/var/log/syslog
/var/log/auth.log
/var/log/dpkg.log
ubuntu@llt-desktop:~$ tail -f /var/log/auth.log
May 6 10:14:03 sshd[1234]: Failed password for invalid user admin
May 6 10:14:09 sshd[1234]: Failed password for invalid user root
AI Tutor
Those are brute-force SSH attempts — very common on any public server. To block them automatically, install fail2ban:sudo apt install fail2banIt watches auth.log and bans IPs after 5 failed attempts.

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Who it's for

✓Developers who want to get comfortable on the command line
✓Students studying for Linux certifications (LPIC, CompTIA Linux+)
✓SysAdmins learning a new distribution or tool
✓Anyone who breaks things at work and needs a safe sandbox
✓Bootcamp grads building practical Linux skills
✓Curious people who want to understand how Linux actually works

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