Linux命令学习总结:date命令【转】

Linux命令学习总结:date命令【转】

本文转自:http://www.cnblogs.com/kerrycode/p/3427617.html

命令简介:

 

date 根据给定格式显示日期或设置系统日期时间。print or set the system date and time

指令所在路径:/bin/date

命令语法:

 

date [OPTION]… [+FORMAT]

date [-u|–utc|–universal] [MMDDhhmm[[CC]YY][.ss]]

 

命令参数:

参数

描述

-d

显示字符串描述的时间

-f

显示DATEFILE文件中的每行时间

-r

显示文件的最后修改时间

-R

以RFC-2822兼容日期格式显示时间

-rfc-2822

以RFC-2822兼容日期格式显示时间

-s

设置时间为string

-u

显示或设定为Coordinated Universal Time时间格式

–help

显示date命令的帮助信息

–version

显示date命令的版本信息

Format参数格式

要说写这位程序的 David MacKenzie老兄,真是事无巨细啊,居然整了这么多格式参数,佩服佩服。

参数

描述

%%

显示字符%

%a

星期几的缩写(Sun..Sat)

%A

星期几的完整名称(Sunday…Saturday)

%b

月份的缩写(Jan..Dec)

%B

月份的完整名称(January..December)

%c

日期与时间。只输入date指令也会显示同样的结果

%C

世纪(年份除100后去整) [00-99]

%d

日期(以01-31来表示)。

%D

日期(含年月日)。

%e

一个月的第几天 ( 1..31)

%F

日期,同%Y-%m-%d

%g

年份(yy)

%G

年份(yyyy)

%h

同%b

%H

小时(00..23)

%I

小时(01..12)

%j

一年的第几天(001..366)

%k

小时( 0..23)

%l

小时( 1..12)

%m

月份(01..12)

%M

分钟(00..59)

%n

换行

%N

纳秒(000000000..999999999)

%p

AM or PM

%P

am or pm

%r

12小时制时间(hh:mm:ss [AP]M)

%R

24小时制时间(hh:mm)

%s

从00:00:00 1970-01-01 UTC开始的秒数

%S

秒(00..60)

%t

制表符

%T

24小时制时间(hh:mm:ss)

%u

一周的第几天(1..7); 1 表示星期一

%U

一年的第几周,周日为每周的第一天(00..53)

%V

一年的第几周,周一为每周的第一天 (01..53)

%w

一周的第几天 (0..6); 0 代表周日

%W

一年的第几周,周一为每周的第一天(00..53)

%x

日期(mm/dd/yy)

%X

时间(%H:%M:%S)

%y

年份(00..99)

%Y

年份 (1970…)

%z

RFC-2822 风格数字格式时区(-0500)

%Z

时区(e.g., EDT), 无法确定时区则为空

   

 

使用示例:

 

1: 查看date命令帮助信息

   1: [root@DB-Server ~]# date --help
   2:  
   3: Usage: date [OPTION]... [+FORMAT]
   4:  
   5: or: date [-u|--utc|--universal] [MMDDhhmm[[CC]YY][.ss]]
   6:  
   7: Display the current time in the given FORMAT, or set the system date.
   8:  
   9: -d, --date=STRING display time described by STRING, not `now'
  10:  
  11: -f, --file=DATEFILE like --date once for each line of DATEFILE
  12:  
  13: -r, --reference=FILE display the last modification time of FILE
  14:  
  15: -R, --rfc-2822 output date and time in RFC 2822 format
  16:  
  17: --rfc-3339=TIMESPEC output date and time in RFC 3339 format.
  18:  
  19: TIMESPEC=`date', `seconds', or `ns' for
  20:  
  21: date and time to the indicated precision.
  22:  
  23: -s, --set=STRING set time described by STRING
  24:  
  25: -u, --utc, --universal print or set Coordinated Universal Time
  26:  
  27: --help display this help and exit
  28:  
  29: --version output version information and exit
  30:  
  31: FORMAT controls the output. The only valid option for the second form
  32:  
  33: specifies Coordinated Universal Time. Interpreted sequences are:
  34:  
  35: %% a literal %
  36:  
  37: %a locale's abbreviated weekday name (e.g., Sun)
  38:  
  39: %A locale's full weekday name (e.g., Sunday)
  40:  
  41: %b locale's abbreviated month name (e.g., Jan)
  42:  
  43: %B locale's full month name (e.g., January)
  44:  
  45: %c locale's date and time (e.g., Thu Mar 3 23:05:25 2005)
  46:  
  47: %C century; like %Y, except omit last two digits (e.g., 21)
  48:  
  49: %d day of month (e.g, 01)
  50:  
  51: %D date; same as %m/%d/%y
  52:  
  53: %e day of month, space padded; same as %_d
  54:  
  55: %F full date; same as %Y-%m-%d
  56:  
  57: %g last two digits of year of ISO week number (see %G)
  58:  
  59: %G year of ISO week number (see %V); normally useful only with %V
  60:  
  61: %h same as %b
  62:  
  63: %H hour (00..23)
  64:  
  65: %I hour (01..12)
  66:  
  67: %j day of year (001..366)
  68:  
  69: %k hour ( 0..23)
  70:  
  71: %l hour ( 1..12)
  72:  
  73: %m month (01..12)
  74:  
  75: %M minute (00..59)
  76:  
  77: %n a newline
  78:  
  79: %N nanoseconds (000000000..999999999)
  80:  
  81: %p locale's equivalent of either AM or PM; blank if not known
  82:  
  83: %P like %p, but lower case
  84:  
  85: %r locale's 12-hour clock time (e.g., 11:11:04 PM)
  86:  
  87: %R 24-hour hour and minute; same as %H:%M
  88:  
  89: %s seconds since 1970-01-01 00:00:00 UTC
  90:  
  91: %S second (00..60)
  92:  
  93: %t a tab
  94:  
  95: %T time; same as %H:%M:%S
  96:  
  97: %u day of week (1..7); 1 is Monday
  98:  
  99: %U week number of year, with Sunday as first day of week (00..53)
 100:  
 101: %V ISO week number, with Monday as first day of week (01..53)
 102:  
 103: %w day of week (0..6); 0 is Sunday
 104:  
 105: %W week number of year, with Monday as first day of week (00..53)
 106:  
 107: %x locale's date representation (e.g., 12/31/99)
 108:  
 109: %X locale's time representation (e.g., 23:13:48)
 110:  
 111: %y last two digits of year (00..99)
 112:  
 113: %Y year
 114:  
 115: %z +hhmm numeric timezone (e.g., -0400)
 116:  
 117: %:z +hh:mm numeric timezone (e.g., -04:00)
 118:  
 119: %::z +hh:mm:ss numeric time zone (e.g., -04:00:00)
 120:  
 121: %:::z numeric time zone with : to necessary precision (e.g., -04, +05:30)
 122:  
 123: %Z alphabetic time zone abbreviation (e.g., EDT)
 124:  
 125: By default, date pads numeric fields with zeroes.
 126:  
 127: The following optional flags may follow `%':
 128:  
 129: - (hyphen) do not pad the field
 130:  
 131: _ (underscore) pad with spaces
 132:  
 133: 0 (zero) pad with zeros
 134:  
 135: ^ use upper case if possible
 136:  
 137: # use opposite case if possible
 138:  
 139: After any flags comes an optional field width, as a decimal number;
 140:  
 141: then an optional modifier, which is either
 142:  
 143: E to use the locale's alternate representations if available, or
 144:  
 145: O to use the locale's alternate numeric symbols if available.
 146:  
 147: Report bugs to <bug-coreutils@gnu.org>.
 148:  

   1: [root@DB-Server ~]# man date
   2:  
   3: DATE(1) User Commands DATE(1)
   4:  
   5: NAME
   6:  
   7: date - print or set the system date and time
   8:  
   9: SYNOPSIS
  10:  
  11: date [OPTION]... [+FORMAT]
  12:  
  13: date [-u|--utc|--universal] [MMDDhhmm[[CC]YY][.ss]]
  14:  
  15: DESCRIPTION
  16:  
  17: Display the current time in the given FORMAT, or set the system date.
  18:  
  19: -d, --date=STRING
  20:  
  21: display time described by STRING, not ‘now’
  22:  
  23: -f, --file=DATEFILE
  24:  
  25: like --date once for each line of DATEFILE
  26:  
  27: -r, --reference=FILE
  28:  
  29: display the last modification time of FILE
  30:  
  31: -R, --rfc-2822
  32:  
  33: output date and time in RFC 2822 format
  34:  
  35: --rfc-3339=TIMESPEC
  36:  
  37: output date and time in RFC 3339 format. TIMESPEC=‘date’, ‘seconds’, or ‘ns’ for date and time to the indicated precision.
  38:  
  39: -s, --set=STRING
  40:  
  41: set time described by STRING
  42:  
  43: -u, --utc, --universal
  44:  
  45: print or set Coordinated Universal Time
  46:  
  47: --help display this help and exit
  48:  
  49: --version
  50:  
  51: output version information and exit
  52:  
  53: FORMAT controls the output. The only valid option for the second form specifies Coordinated Universal Time. Interpreted sequences are:
  54:  
  55: %% a literal %
  56:  
  57: %a locale’s abbreviated weekday name (e.g., Sun)
  58:  
  59: %A locale’s full weekday name (e.g., Sunday)
  60:  
  61: %b locale’s abbreviated month name (e.g., Jan)
  62:  
  63: %B locale’s full month name (e.g., January)
  64:  
  65: %c locale’s date and time (e.g., Thu Mar 3 23:05:25 2005)
  66:  
  67: %C century; like %Y, except omit last two digits (e.g., 21)
  68:  
  69: %d day of month (e.g, 01)
  70:  
  71: %D date; same as %m/%d/%y
  72:  
  73: %e day of month, space padded; same as %_d
  74:  
  75: %F full date; same as %Y-%m-%d
  76:  
  77: %g last two digits of year of ISO week number (see %G)
  78:  
  79: %G year of ISO week number (see %V); normally useful only with %V
  80:  
  81: %h same as %b
  82:  
  83: %H hour (00..23)
  84:  
  85: %I hour (01..12)
  86:  
  87: %j day of year (001..366)
  88:  
  89: %k hour ( 0..23)
  90:  
  91: %l hour ( 1..12)
  92:  
  93: %m month (01..12)
  94:  
  95: %M minute (00..59)
  96:  
  97: %n a newline
  98:  
  99: %N nanoseconds (000000000..999999999)
 100:  
 101: %p locale’s equivalent of either AM or PM; blank if not known
 102:  
 103: %P like %p, but lower case
 104:  
 105: %r locale’s 12-hour clock time (e.g., 11:11:04 PM)
 106:  
 107: %R 24-hour hour and minute; same as %H:%M
 108:  
 109: %s seconds since 1970-01-01 00:00:00 UTC
 110:  
 111: %S second (00..60)
 112:  
 113: %t a tab
 114:  
 115: %T time; same as %H:%M:%S
 116:  
 117: %u day of week (1..7); 1 is Monday
 118:  
 119: %U week number of year, with Sunday as first day of week (00..53)
 120:  
 121: %V ISO week number, with Monday as first day of week (01..53)
 122:  
 123: %w day of week (0..6); 0 is Sunday
 124:  
 125: %W week number of year, with Monday as first day of week (00..53)
 126:  
 127: %x locale’s date representation (e.g., 12/31/99)
 128:  
 129: %X locale’s time representation (e.g., 23:13:48)
 130:  
 131: %y last two digits of year (00..99)
 132:  
 133: %Y year
 134:  
 135: %z +hhmm numeric timezone (e.g., -0400)
 136:  
 137: %:z +hh:mm numeric timezone (e.g., -04:00)
 138:  
 139: %::z +hh:mm:ss numeric time zone (e.g., -04:00:00)
 140:  
 141: %:::z numeric time zone with : to necessary precision (e.g., -04, +05:30)
 142:  
 143: %Z alphabetic time zone abbreviation (e.g., EDT)
 144:  
 145: By default, date pads numeric fields with zeroes. The following optional flags may follow ‘%’:
 146:  
 147: - (hyphen) do not pad the field _ (underscore) pad with spaces 0 (zero) pad with zeros ^ use upper case if possible # use opposite case if possible
 148:  
 149: After any flags comes an optional field width, as a decimal number; then an optional modifier, which is either E to use the locale’s alternate representations if available,
 150:  
 151: or O to use the locale’s alternate numeric symbols if available.
 152:  
 153: ENVIRONMENT
 154:  
 155: TZ Specifies the timezone, unless overridden by command line parameters. If neither is specified, the setting from /etc/localtime is used.
 156:  
 157: AUTHOR
 158:  
 159: Written by David MacKenzie.
 160:  
 161: REPORTING BUGS
 162:  
 163: Report bugs to <bug-coreutils@gnu.org>.
 164:  
 165: COPYRIGHT
 166:  
 167: Copyright ? 2006 Free Software Foundation, Inc.
 168:  
 169: This is free software. You may redistribute copies of it under the terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to
 170:  
 171: the extent permitted by law.
 172:  
 173: SEE ALSO
 174:  
 175: The full documentation for date is maintained as a Texinfo manual. If the info and date programs are properly installed at your site, the command
 176:  
 177: info date
 178:  
 179: should give you access to the complete manual.
 180:  
 181: date 5.97 May 2011 DATE(1)
 182:  

2:查看date命令的版本信息

   1: [root@DB-Server ~]# date --version
   2:  
   3: date (GNU coreutils) 5.97
   4:  
   5: Copyright (C) 2006 Free Software Foundation, Inc.
   6:  
   7: This is free software. You may redistribute copies of it under the terms of
   8:  
   9: the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
  10:  
  11: There is NO WARRANTY, to the extent permitted by law.
  12:  
  13: Written by David MacKenzie.
  14:  

3:运用-d参数

   1: [root@DB-Server ~]# date -d now
   2:  
   3: Thu Nov 14 22:52:45 PST 2013
   4:  
   5: [root@DB-Server ~]# date -d 'next monday'
   6:  
   7: Mon Nov 18 00:00:00 PST 2013
   8:  
   9: [root@DB-Server ~]# date -d yesterday +%Y%m%d
  10:  
  11: 20131113
  12:  

4:显示文件中的时间

   1: [root@DB-Server ~]# cat >date.txt
   2:  
   3: 2013-11-17 10:54:00
   4:  
   5: 2013-11-22 11:11:11
   6:  
   7: [root@DB-Server ~]# more date.txt 
   8:  
   9: 2013-11-17 10:54:00
  10:  
  11: 2013-11-22 11:11:11
  12:  
  13: [root@DB-Server ~]# date -f date.txt
  14:  
  15: Sun Nov 17 10:54:00 PST 2013
  16:  
  17: Fri Nov 22 11:11:11 PST 2013
  18:  

5:显示文件最后修改的时间

   1: [root@DB-Server ~]# date -r install.log
   2:  
   3: Fri Sep 6 11:31:15 PDT 2013
   4:  

6:按各种格式显示当前日期时间

这个命令的格式参数实在是太多了,在此没有必要每一个参数都尝试一遍,大家可以对唱Format参数表,自己敲一敲命令实践一下。

   1: 6.1 只显示当前日期的年份
   2:  
   3: [root@DB-Server ~]# date +%Y
   4:  
   5: 2013
   6:  
   7: 6.2 只显示当前日期的月份
   8:  
   9: [root@DB-Server ~]# date +%m
  10:  
  11: 11
  12:  
  13: 6.3 显示各种格式类型的日期
  14:  
  15: [root@DB-Server ~]# date +%D
  16:  
  17: 11/14/13
  18:  
  19: [root@DB-Server ~]# date '+%Y-%m-%d'
  20:  
  21: 2013-11-14
  22:  
  23: [root@DB-Server ~]# date +%Y-%m-%d
  24:  
  25: 2013-11-14
  26:  
  27: [root@DB-Server ~]# date +%m/%d/%y
  28:  
  29: 11/14/13
  30:  
  31: [root@DB-Server ~]# date +%m/%d/%Y
  32:  
  33: 11/14/2013
  34:  
  35: .......
  36:  

7: 设置系统时间

 

 

   1: [root@DB-Server ~]# date -s "2013-11-14 00:00:00"
   2:  
   3: Thu Nov 14 00:00:00 PST 2013

作者:
潇湘隐者

本文版权归作者所有,欢迎转载,但未经作者同意必须保留此段声明,且在文章页面明显位置给出原文连接.

版权声明:本文内容由互联网用户自发贡献,该文观点仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 举报,一经查实,本站将立刻删除。

发布者:全栈程序员-用户IM,转载请注明出处:https://javaforall.cn/109338.html原文链接:https://javaforall.cn

【正版授权,激活自己账号】: Jetbrains全家桶Ide使用,1年售后保障,每天仅需1毛

【官方授权 正版激活】: 官方授权 正版激活 支持Jetbrains家族下所有IDE 使用个人JB账号...

(0)


相关推荐

  • xshell7安装步骤_快影下载安装

    xshell7安装步骤_快影下载安装文章目录第一部分下载第一步去官方下载界面第二步填写正确的手机号和密码,之后会有一个下载链接第二部分安装过程第一步双击exe文件,进入安装界面第二步接受统一许可证书第三步选择安装的路径第四步随便选一个图面的目录第五步进行安装界面,等待安全完成第三部分设置ssh配置连接第一步设置名称、主机、端口第二步设置链接方式,我选的账号和密码第三步选择接受密钥第四步成功链接主机摘抄第一部分下载第一步去官方下载界面https://www.xshellcn.com/xiazai.html

  • windows 激活状况 命令查询

    windows 激活状况 命令查询slmgr-ipkKey安装产品密钥slmgr-upk卸载密钥slmgr-ato激活密钥sLUI4显示电话激活选项msinfo32查看电脑组件系统详细信息slmgr-skms激活服务器以下又是产品win8版本激活的显示状态:slmgr.vbs-dlv显示:最为详尽的激活信息,包括:激活ID、安装ID、激活截止日期slmgr.vbs-dli显示:…

  • 网站目录权限设置

    网站目录权限设置

  • 关于Thread.IsBackground属性的理解

    关于Thread.IsBackground属性的理解C#中,Thread类有一个IsBackground的属性.MSDN上对它的解释是:获取或设置一个值,该值指示某个线程是否为后台线程。个人感觉这样的解释等于没有解释..Net中的线程,可以分为后台线程和前台线程。后台线程与前台线程并没有本质的区别,它们之间唯一的区别就是:后台线程不会防止应用程序的进程被终止掉。呵呵,这句话读出来好像并不那么好懂.其实,说白了就是当前台线程都结束了的时候,…

    2022年10月16日
  • Mysql Connector C++ 在VS2008下编译[通俗易懂]

    Mysql Connector C++ 在VS2008下编译[通俗易懂]1、安装Mysql下载http://dev.mysql.com/downloads/windows/installer/,安装即可2、安装完成之后找到安装目录下有ConnectorC++1.1.3目录,目录下有include和lib文件夹在vs2008中将include路径包含进来:再把lib路径包含进来:再将mysqlcppconn.lib库以及mysql

  • 深入分析MySQL ERROR 1045 (28000)[通俗易懂]

    深入分析MySQL ERROR 1045 (28000)

发表回复

您的电子邮箱地址不会被公开。

关注全栈程序员社区公众号