DB Wiki

dmidecode -t 17 | grep "Size:"
grep Mem /proc/meminfo
grep Swap /proc/meminfo
grep HugePages_ /proc/meminfo

grep name /proc/cpuinfo | uniq 
grep process /proc/cpuinfo | wc -l

journalctl -u <Service_Name> -n 100 -f
systemctl list-units

sudo ssh-keygen -t ed25519 -f /root/.ssh/id_ed25519 -N ''
vi /etc/ssh/sshd_config
systemctl restart ssh / sshd

CTRL+ALT+F2          : Text based logon prompt
journalctl -b -0     : Check last boot log