linux 时间 转换 标准

linux 时间 转换 标准


2024年5月26日发(作者:)

linux 时间 转换 标准

英文回答:

To convert time in Linux, you can use various commands

and utilities available in the Linux operating system. One

commonly used command is the "date" command, which allows

you to display or set the system date and time.

To display the current date and time, you can simply

run the "date" command without any arguments. For example,

if I run the command "date" in my terminal, it will display

the current date and time in the format specified by the

system's locale settings.

$ date.

Thu Oct 21 14:30:00 PDT 2021。

If you want to convert a specific date and time to a

different format, you can use the "-d" option followed by

the desired date and time. For example, if I want to

convert the date "2021-10-21 14:30:00" to the format "YYYY-

MM-DD HH:MM:SS", I can run the following command:

$ date -d "2021-10-21 14:30:00" +"%Y-%m-%d %H:%M:%S"

2021-10-21 14:30:00。

This will display the converted date and time in the

specified format. You can customize the format by using

different format specifiers, such as "%Y" for the year,

"%m" for the month, "%d" for the day, "%H" for the hour,

"%M" for the minute, and "%S" for the second.

Another useful command for time conversion in Linux is

the "hwclock" command, which is used to get or set the

hardware clock time. The hardware clock is a clock that

runs independently of the operating system and is used to

keep track of time even when the system is powered off.

To display the current hardware clock time, you can run

the "hwclock" command without any arguments. For example:

$ hwclock.

Thu 21 Oct 2021 02:30:00 PM PDT -0.000000 seconds.

If you want to convert the hardware clock time to the

system time or vice versa, you can use the "-r" option to

read the hardware clock time or the "-s" option to set the

hardware clock time. For example, to set the hardware clock

time to the current system time, you can run the following

command:

$ sudo hwclock -w.

This will synchronize the hardware clock with the

system time.

中文回答:

在Linux中,要转换时间可以使用各种命令和工具。其中一个

常用的命令是"date"命令,它允许你显示或设置系统的日期和时间。

要显示当前的日期和时间,只需在终端中运行"date"命令,不

带任何参数。例如,如果我在终端中运行"date"命令,它将以系统

的区域设置为准显示当前的日期和时间。

如果你想将特定的日期和时间转换为不同的格式,可以使用"-

d"选项后跟所需的日期和时间。例如,如果我想将日期"2021-10-21

14:30:00"转换为格式"YYYY-MM-DD HH:MM:SS",可以运行以下命令:

$ date -d "2021-10-21 14:30:00" +"%Y-%m-%d %H:%M:%S"

2021-10-21 14:30:00。

这将以指定的格式显示转换后的日期和时间。你可以使用不同

的格式说明符来自定义格式,如"%Y"代表年份,"%m"代表月份,

"%d"代表日期,"%H"代表小时,"%M"代表分钟,"%S"代表秒。

在Linux中,另一个用于时间转换的有用命令是"hwclock"命令,

它用于获取或设置硬件时钟时间。硬件时钟是一种独立于操作系统

运行并在系统关闭时仍能跟踪时间的时钟。

要显示当前的硬件时钟时间,可以运行"hwclock"命令,不带任

何参数。例如:

$ hwclock.

Thu 21 Oct 2021 02:30:00 PM PDT -0.000000 seconds.

如果你想将硬件时钟时间转换为系统时间或反之亦然,可以使

用"-r"选项读取硬件时钟时间或"-s"选项设置硬件时钟时间。例如,

要将硬件时钟时间设置为当前的系统时间,可以运行以下命令:

$ sudo hwclock -w.

这将使硬件时钟与系统时间同步。


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