Your ultimate cyberpunk-style resource hub for Linux system administration. Jump between sections using the neon navigation above.
journalctl -xeuname -ahtopsudo nano /etc/ssh/sshd_configEssential commands and concepts every Linux admin should know.
Network configuration, troubleshooting, and optimization.
Hardening your system and protecting against threats.
Tools and techniques for keeping an eye on your systems.
Expert-level techniques and niche tools for power users.
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ls -la
cp -r source dest
mv oldname newname
find / -name "filename"
uname -a
df -h
free -m
lscpu
ip a
ss -tulnp
ping example.com
traceroute example.com
ping -c 4 example.com
traceroute example.com
mtr example.com
curl -I example.com
ss -tulnp
netstat -tulnp
nmap -sV localhost
telnet example.com 80
sudo lynis audit system
sudo chkrootkit
sudo rkhunter --check
sudo aide --check
sudo find / -perm -4000
sudo find / -type f -perm -o+w
sudo chmod -R 750 /path
sudo chown -R user:group /path