Cuvinte cheie: nucleu/kernel, Linux, uname -r, vmlinuz, sysctl, dmesg, apel de sistem, modul de kernel, lsmod, insmod, rmmod, modprobe, module assistant, bootloader, GRUB, init, runlevel, update-rc.d, sysv-rc-conf, proces, PID, ps, pstree, pgrep, foreground, background, daemon, semnale, kill, pkill, lsof, serviciu, netstat