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Linux - System: System Setting

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System Time

CMD DESC
timedatectl Get system time
timedatectl status Show current time settings
timedatectl show Show properties of systemd-timedated
timedatectl set-ntp true Enable or disable network time synchronization
timedatectl set-time 'YYYY-MM-DD HH:MM:SS' Set system time
date -s "YYYY-MM-DD HH:MM:SS" Set system time

Lab: system time

timedatectl
#                Local time: Mon 2025-10-13 11:57:32 EDT
#            Universal time: Mon 2025-10-13 15:57:32 UTC
#                  RTC time: Mon 2025-10-13 15:57:32
#                 Time zone: America/Toronto (EDT, -0400)
# System clock synchronized: yes
#               NTP service: active
#           RTC in local TZ: no

timedatectl status
#                Local time: Mon 2025-10-13 11:58:00 EDT
#            Universal time: Mon 2025-10-13 15:58:00 UTC
#                  RTC time: Mon 2025-10-13 15:58:00
#                 Time zone: America/Toronto (EDT, -0400)
# System clock synchronized: yes
#               NTP service: active
#           RTC in local TZ: no

timedatectl show
# Timezone=America/Toronto
# LocalRTC=no
# CanNTP=yes
# NTP=yes
# NTPSynchronized=yes
# TimeUSec=Mon 2025-10-13 11:58:19 EDT
# RTCTimeUSec=Mon 2025-10-13 11:58:19 EDT

timedatectl set-ntp true