LFCS / tasks
0/5 completed — do these live in your VM, then check them off.
1. Find every file larger than 50 MB under /var; write their paths to /root/big.txt.
2. From /etc/passwd, extract usernames of accounts with UID ≥ 1000 into /root/humans.txt.
3. In /root/config.txt, replace every 'localhost' with 'server01', in place.
4. Create gzip archive /root/ssh-backup.tar.gz containing /etc/ssh.
5. Count 'Failed password' lines in the auth log; write the number to /root/failcount.txt.