TIMEDATECTL
TIMEDATECTL
NAMESYNOPSIS
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NAME
timedatectl - æ§å¶ç³»ç»çæ¶é´ä¸æ¥æ
SYNOPSIS
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timedatectl [OPTIONS...] {COMMAND} |
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timedatectl å¯ç¨äºæ¥è¯¢ä¸ä¿®æ¹ ç³»ç»æ¶éçå项设置ã
å¯ä»¥ä½¿ç¨ systemd-firstboot(1) åå§åå·²æè½½(ä½æªå¯å¨)çç³»ç»éåçæ¶åºè®¾ç½®ã
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--no-ask-password
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--adjust-system-clock
å½ä½¿ç¨ set-local-rtc å½ä»¤æ¶ï¼ è¥ä½¿ç¨äºæ¤éé¡¹ï¼ åè¡¨ç¤ºæ ¹æ®RTCæ¶é´æ¥æ´æ°ç³»ç»æ¶éã è¥æªä½¿ç¨æ- ¤é项ï¼åè¡¨ç¤ºæ ¹æ®ç³»ç»æ¶éæ¥æ´æ°RTCæ¶é´ã
-H, --host=
æä½æå®çè¿ç¨ä¸»æºãå¯ä»¥ä»æå®ä¸ä¸ªä¸»æºå(hostname)ï¼ ä¹å¯ä»¥ä½¿ç¨ "username@hostname" æ ¼å¼ã hostname åé¢è¿å¯ä»¥å ä¸å®¹å¨å(以åå·åé)ï¼ ä¹å°±æ¯å½¢å¦ "hostname:container" çæ ¼å¼ï¼ 以表示ç´æ¥è¿æ¥å°æå®ä¸»æºçæå®å®¹å¨åã æä½å°éè¿SSHåè®®è¿è¡ï¼ä»¥ç¡®ä¿å®å¨ã å¯ä»¥éè¿ machinectl -H HOST å½ä»¤ååºè¿ç¨ä¸»æºä¸çææ容å¨å称ã
-M, --machine=
å¨æ¬å°å®¹å¨åæ§è¡æä½ã å¿é¡»æç¡®æå®å®¹å¨çå称ã
-h, --help
æ¾ç¤ºç®çç帮å©ä¿¡æ¯å¹¶éåºã
--version
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--no-pager
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status
æ¾ç¤ºç³»ç»æ¶éä¸RTCçå½åç¶æï¼ åæ¬æ¶åºè®¾ç½®ä¸ç½ç»æ¶é´åæ¥æå¡çç¶æã 注æï¼æè°"ç½ç»æ¶é´åæ¥æå¡çç¶æ"å®éä¸åªæ¯ systemd-timesyncd.service æå¡çç¶æï¼ å¹¶ä¸æ£æ¥æ¯å¦åå¨å¶ä»æ¶é´åæ¥æå¡ã è¿æ¯é»è®¤å½ä»¤ã
set-time [TIME]
å°ç³»ç»æ¶é设为æå®çæ¶é´ï¼ 并åæ¶æ´æ°RTCæ¶é´ã [TIME] æ¯ä¸ä¸ªå½¢å¦ "2012-10-30 18:17:16"çæ¶é´å符串ã
set-timezone [TIMEZONE]
设置系ç»æ¶åºï¼ä¹å°±æ¯æ´æ° /etc/localtime 软è¿æ¥çæåã å¯ä»¥ç¨ä¸é¢ç list-timezones å½ä»¤ååºææå¯ç¨æ¶åºã å¦æRTC被设为æ¬å°æ¶é´ï¼ æ¤å½ä»¤è¿ä¼åæ¶æ´æ°RTCæ¶é´ã è¯¦è§ localtime(5) æåã
list-timezones
ååºææå¯ç¨æ¶åºï¼æ¯è¡ä¸ä¸ªã ååºçå¼å¯ä»¥ç¨ä½åè¿° set-timezone å½ä»¤çåæ°ã
set-local-rtc [BOOL]
设为 "no" 表示å¨RTCä¸åå¨UTCæ¶é´ï¼ 设为 "yes" 表示å¨RTCä¸å- å¨æ¬å°æ¶é´ã åºè¯¥å°½ä¸åå¯è½å¨RTCä¸åå¨UTCæ¶é´ã å°½éä¸è¦å¨RTCä¸å- å¨æ¬å°æ¶é´ï¼ å 为è¿ä¼é æä¸ç³»å麻ç¦ï¼ å°¤å¶æ¯å¨åæ¢æ¶åºä»¥åè°æ´å¤ä»¤æ¶æå¬ä»¤æ¶çæ¶åã 注æï¼é¤éæ确使ç¨äº --adjust-system-clock éé¡¹ï¼ å¦åæ- ¤å½ä»¤è¿ä¼åæ¶ç¨ç³»ç»æ¶éæ´æ°RTCæ¶é´ã æ¤å½ä»¤è¿ä¼æ¹å /etc/adjtime æ件第ä¸è¡çå容ï¼è¯¦è§ hwclock(8) æåã
set-ntp [BOOL]
æ¯å¦å¼å¯ç½ç»æ¶é´åæ¥ã 设为 "yes" åå¯ç¨å¹¶å¯å¨ systemd-timesyncd.service æå¡ï¼ 设为 "no" ååæ¢å¹¶åç¨å®ã 该å½ä»¤é¤äºæ§å¶ systemd-timesyncd.service æå¡çç¶æï¼ä¸åä»»ä½å¶ä»æä½ã ä¹å°±æ¯è¯´ï¼è®¾ä¸º "yes" ç¸å½äºæ§è¡ systemctl enable --now systemd-timesyncd.service å½ä»¤ï¼ è设为 "no" åç¸å½äºæ§è¡ systemctl disable --now systemd-timesyncd.service å½ä»¤ï¼
注æï¼å³ä½¿ä½¿ç¨æ¤å½ä»¤å³éäº systemd-timesyncd.service æå¡ï¼ ä»ç¶æå¯è½åå¨å¶ä»æ¶é´åæ¥æå¡ã å¦å¤ï¼ä¸¥æ ¼æ¥è¯´ï¼ systemd-timesyncd.service é¤äºåæ¥æ¶é´ä¹å¤ï¼è¿åæ¶å¼æå¶ä»åè½ï¼ ä¾å¦å¨æ ç½ç»ä¸æ RTCçç³»ç»ä¸ç»´æç³»ç»ç"åè°æ¶é"ã è¯¦è§ systemd-timesyncd.service(8) æåã
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$SYSTEMD_PAGER
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$ timedatectl
Local time: Di 2015-04-07 16:26:56 CEST
Universal time: Di 2015-04-07 14:26:56 UTC
RTC time: Di 2015-04-07 14:26:56
Time zone: Europe/Berlin (CEST, +0200)
Network time on: yes
NTP synchronized: yes
RTC in local TZ: no
å¼å¯ç½ç»æ¶é´åæ¥æå¡
$ timedatectl
set-ntp true
==== AUTHENTICATING FOR org.freedesktop.timedate1.set-ntp
===
Authentication is required to control whether network time
synchronization shall be enabled.
Authenticating as: user
Password: ********
==== AUTHENTICATION COMPLETE ===
$ systemctl
status systemd-timesyncd.service
â systemd-timesyncd.service - Network Time
Synchronization
Loaded: loaded
(/usr/lib/systemd/system/systemd-timesyncd.service; enabled)
Active: active (running) since Mo 2015-03-30 14:20:38 CEST;
5s ago
Docs: man:systemd-timesyncd.service(8)
Main PID: 595 (systemd-timesyn)
Status: "Using Time Server 216.239.38.15:123
(time4.google.com)."
CGroup: /system.slice/systemd-timesyncd.service
ââ595 /usr/lib/systemd/systemd-timesyncd
...
åè§
systemd(1), hwclock(8), date(1), localtime(5), systemctl(1), systemd-timedated.service(8), systemd-timesyncd.service(8), systemd-firstboot(1)
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