debian 修改系统时钟。命令为:date -s

本文详细介绍了如何修改Linux系统的时钟与时区设置,包括使用date命令调整时间、tzselect查找时区、设置时区的方法(通过cp命令与exportTZ变量),以及安装与手动设置ntp服务的步骤。

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修改系统时钟。命令为:date -s
(1)将时间调整为10月11日凌晨1点55分:data 10110155
(2)将系统时间设定成2005年8月8日:      date -s 2005/08/08
(3)将系统时间设定成下午8点12分0秒: date -s 20:12:00

 

步骤:

1. tzselect命令查找适合于本地的时区

此命令仅显示时区信息,方便后面的设置。比如中国标准时间,变量TZ应设为Asia/Shanghai

2. 设置时区(有两种办法)

cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime #覆盖原来的localtime文件。此时用date命令就会发现时间显示也发生了改变,但时间并未改变,TZ变量也未设置。

第二种办法是,在/etc/profile(设置系统级变量)或~/.profile(设置用户变量)中加入

export TZ=’Asia/Shanghai’

注意,TZ变量会覆盖第一种方法的结果,至少在date命令中会如此(date根据时区来显示时间)。推荐第一种。

3. 安装ntp(需网络连接,推荐)

aptitude install ntp #安装完毕就会自动设置时间

4. 手动设置(如果不能使用ntp的话)

date -s `date -u +%T` #如果当前系统将硬件时钟当作UTC时间,而不是北京时间的话(安装Debian选择英文则会如此)

hwclock -w #将系统时间写入硬件

 


/var/log/syslog:Mar 21 09:12:15 1900-services systemd[2771535]: Closed debconf communication socket. /var/log/syslog:Mar 21 09:12:15 1900-services systemd[2771535]: Closed REST API socket for snapd user session agent. /var/log/syslog:Mar 21 09:12:15 1900-services systemd[2771535]: Removed slice User Application Slice. /var/log/syslog:Mar 21 09:12:15 1900-services systemd[2771535]: Reached target Shutdown. /var/log/syslog:Mar 21 09:12:15 1900-services systemd[2771535]: Finished Exit the Session. /var/log/syslog:Mar 21 09:12:15 1900-services systemd[2771535]: Reached target Exit the Session. /var/log/syslog:Mar 21 09:12:15 1900-services systemd[1]: user@1000.service: Deactivated successfully. /var/log/syslog:Mar 21 09:12:15 1900-services systemd[1]: Stopped User Manager for UID 1000. /var/log/syslog:Mar 21 09:12:15 1900-services systemd[1]: Stopping User Runtime Directory /run/user/1000... /var/log/syslog:Mar 21 09:12:15 1900-services systemd[1]: run-user-1000.mount: Deactivated successfully. /var/log/syslog:Mar 21 09:12:15 1900-services systemd[1]: user-runtime-dir@1000.service: Deactivated successfully. /var/log/syslog:Mar 21 09:12:15 1900-services systemd[1]: Stopped User Runtime Directory /run/user/1000. /var/log/syslog:Mar 21 09:12:15 1900-services systemd[1]: Removed slice User Slice of UID 1000. /var/log/syslog:Mar 21 09:12:15 1900-services systemd[1]: user-1000.slice: Consumed 5.014s CPU time. /var/log/syslog:Mar 21 09:15:01 1900-services CRON[2784927]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1) /var/log/syslog:Mar 21 09:17:01 1900-services CRON[2787436]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) /var/log/syslog:Mar 21 09:25:01 1900-services CRON[2814245]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1) /var/log/syslog:Mar 21 09:35:01 1900-services CRON[2826806]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1) /var/log/syslog:Mar 21 09:45:01 1900-services CRON[2839390]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1) /var/log/syslog:Mar 21 09:45:18 1900-services freshclam[743]: Fri Mar 21 09:45:18 2025 -> Received signal: wake up /var/log/syslog:Mar 21 09:45:18 1900-services freshclam[743]: Fri Mar 21 09:45:18 2025 -> ClamAV update process started at Fri Mar 21 09:45:18 2025 /var/log/syslog:Mar 21 09:45:18 1900-services freshclam[743]: Fri Mar 21 09:45:18 2025 -> daily.cld database is up-to-date (version: 27583, sigs: 2074188, f-level: 90, builder: raynman) /var/log/syslog:Mar 21 09:45:18 1900-services freshclam[743]: Fri Mar 21 09:45:18 2025 -> main.cvd database is up-to-date (version: 62, sigs: 6647427, f-level: 90, builder: sigmgr) /var/log/syslog:Mar 21 09:45:18 1900-services freshclam[743]: Fri Mar 21 09:45:18 2025 -> bytecode.cvd database is up-to-date (version: 335, sigs: 86, f-level: 90, builder: raynman) /var/log/syslog:Mar 21 09:49:58 1900-services snapd[617]: storehelpers.go:954: cannot refresh: snap has no updates available: "core20", "lxd", "snapd" /var/log/syslog:Mar 21 09:55:01 1900-services CRON[2868671]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)系统服务日志
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03-22
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