>>
Processes and Jobs (systemctl, ps, kill,top, crontab, at)
Additional cronjobs (hourly, daily,weekly, monthly)
Process Management (bg, fg, nice)
System Monitoring Commands (df,dmesg, iostat 1, netstat, free, top)
System Logs Monitor (/var/log)
System Maintenance Commands(shutdown, init, reboot, halt)
Changing System Hostname(hostnamectl)
Finding System Information (uname,dmidecode)
Finding System Architecture (arch)
Terminal Control Keys