Linux常用命令-timedatectl

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命令

timedatectl

描述

Control the system time and date
设置时间和日期

用法

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timedatectl [OPTIONS...] COMMAND ...

选项

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Options:
  -H --host=[USER@]HOST    操作远程主机,需要输入用户名和密码

Commands:
  status                   显示当前时间设置,默认命令
  set-time TIME            设置系统时间
  set-timezone ZONE        设置系统时区
  list-timezones           查看所有时区
  set-local-rtc BOOL       RTC是否为本地时间,BOOL为true或false
  set-ntp BOOL             是否开启NTP时间同步

注意

无

示例

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$ timedatectl --version 
systemd 219
+PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 -SECCOMP +BLKID +ELFUTILS +KMOD +IDN
# 查看系统时间
$ timedatectl 
      Local time: Sat 2021-02-20 17:46:46 CST
  Universal time: Sat 2021-02-20 09:46:46 UTC
        RTC time: Sat 2021-02-20 09:46:46
       Time zone: Asia/Shanghai (CST, +0800)
     NTP enabled: yes
NTP synchronized: yes
 RTC in local TZ: no
      DST active: n/a
# 更改系统时间,格式如下
$ timedatectl set-time "2020-02-10 10:20:00"
Failed to set time: Automatic time synchronization is enabled
# 注意需要先关闭同步才能更改时间
$ timedatectl set-ntp false
$ timedatectl set-time "2020-02-10 10:20:11"
$ timedatectl
      Local time: Mon 2020-02-10 10:20:11 CST
  Universal time: Mon 2020-02-10 02:20:11 UTC
        RTC time: Mon 2020-02-10 02:20:12
       Time zone: Asia/Shanghai (CST, +0800)
     NTP enabled: no
NTP synchronized: no
 RTC in local TZ: no
      DST active: n/a
# 更改系统时区
$ timedatectl list-timezones |grep New_York
America/New_York
$ timedatectl set-timezone  America/New_York
# 查看时区文件的链接地址
$ ll /etc/localtime
lrwxrwxrwx 1 root root 38 Feb 20 05:09 /etc/localtime -> ../usr/share/zoneinfo/America/New_York
$ timedatectl
      Local time: Sat 2021-02-20 04:56:32 EST
  Universal time: Sat 2021-02-20 09:56:32 UTC
        RTC time: Mon 2020-02-10 02:24:03
       Time zone: America/New_York (EST, -0500)
     NTP enabled: no
NTP synchronized: no
 RTC in local TZ: no
      DST active: no
 Last DST change: DST ended at
                  Sun 2020-11-01 01:59:59 EDT
                  Sun 2020-11-01 01:00:00 EST
 Next DST change: DST begins (the clock jumps one hour forward) at
                  Sun 2021-03-14 01:59:59 EST
                  Sun 2021-03-14 03:00:00 EDT
# 还原时区
$ timedatectl set-timezone  Asia/Shanghai
$ ll /etc/localtime
lrwxrwxrwx 1 root root 35 Feb 20 18:09 /etc/localtime -> ../usr/share/zoneinfo/Asia/Shanghai