使用timedatectl查询和调整系统时间日期

查看系统时间日期配置

[centos@dev ~]$ sudo timedatectl
[sudo] password for centos:
               Local time: Wed 2020-07-01 09:21:55 UTC
           Universal time: Wed 2020-07-01 09:21:55 UTC
                 RTC time: Wed 2020-07-01 09:21:55
                Time zone: UTC (UTC, +0000)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no
[centos@dev ~]$
[centos@dev ~]$ sudo timedatectl --help
timedatectl [OPTIONS...] COMMAND ...

Query or change system time and date settings.

  -h --help                Show this help message
     --version             Show package version
     --no-pager            Do not pipe output into a pager
     --no-ask-password     Do not prompt for password
  -H --host=[USER@]HOST    Operate on remote host
  -M --machine=CONTAINER   Operate on local container
     --adjust-system-clock Adjust system clock when changing local RTC mode
     --monitor             Monitor status of systemd-timesyncd
  -p --property=NAME       Show only properties by this name
  -a --all                 Show all properties, including empty ones
     --value               When showing properties, only print the value

Commands:
  status                   Show current time settings
  show                     Show properties of systemd-timedated
  set-time TIME            Set system time
  set-timezone ZONE        Set system time zone
  list-timezones           Show known time zones
  set-local-rtc BOOL       Control whether RTC is in local time
  set-ntp BOOL             Enable or disable network time synchronization

systemd-timesyncd Commands:
  timesync-status          Show status of systemd-timesyncd
  show-timesync            Show properties of systemd-timesyncd
[centos@dev ~]$

修改系统时区

[centos@dev ~]$ sudo timedatectl set-timezone Asia/Hong_Kong
[centos@dev ~]$ date
Wed Jul  1 17:22:59 HKT 2020
[centos@dev ~]$
[centos@dev ~]$ sudo timedatectl
               Local time: Wed 2020-07-01 17:24:20 HKT
           Universal time: Wed 2020-07-01 09:24:20 UTC
                 RTC time: Wed 2020-07-01 09:24:20
                Time zone: Asia/Hong_Kong (HKT, +0800)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no
[centos@dev ~]$