Cuvinte cheie: drept de acces, chmod, umask, setuid, capabilities, chroot, ulimit, /etc/security/limits.conf, cote, quota, edquota, quotaon, sudo, /etc/sudoers, password aging, /etc/login.defs, usermod, chage, uptime, dmesg, sar, last, ac, sa, w, top, htop, lsof, find, netstat, jurnalizare, syslogd, logger