linux-date 转换时间戳

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date命令主要用途

  • 1、查询当前时间
$> date
Wed Jan 13 22:47:50 CST 2019 //获取当前时间
  • 2、获取当前时间对应时间戳
$> date +%s
1547391600
  • 3、获取某个时间节点对应的时间戳
$> date -d '2019-01-13 23:00:00' +%s
1547391600
  • 4、获取时间戳对应的时间节点
$> date --date='@1547391600'
Sun Jan 13 23:00:00 CST 2019

$> date -d '@1547391600'
Sun Jan 13 23:00:00 CST 2019

// 用户可以自定义日志显示格式

$> date -d '@1547391600' +"%Y-%m-%d %H:%M:%S"
2019-01-13 23:00:00

%> date -d '@1547391600' +"%Y-%m-%d %I:%M:%S"
2019-01-13 11:00:00

$> date -d '@1547391600' +"%Y-%m-%d %I:%M:%S %A"
2019-01-13 11:00:00 Sunday

关于 date 的详细说明

Usage: date [OPTION]... [+FORMAT]
  or:  date [-u|--utc|--universal] [MMDDhhmm[[CC]YY][.ss]]
Display the current time in the given FORMAT, or set the system date.

Mandatory arguments to long options are mandatory for short options too.
  // 最主要的,通过 -d 指定时间.
  -d, --date=STRING         display time described by STRING, not 'now'
  -f, --file=DATEFILE       like --date once for each line of DATEFILE
  -I[TIMESPEC], --iso-8601[=TIMESPEC]  output date/time in ISO 8601 format.
                            TIMESPEC='date' for date only (the default),
                            'hours', 'minutes', 'seconds', or 'ns' for date
                            and time to the indicated precision.
  -r, --reference=FILE      display the last modification time of FILE
  -R, --rfc-2822            output date and time in RFC 2822 format.
                            Example: Mon, 07 Aug 2006 12:34:56 -0600
      --rfc-3339=TIMESPEC   output date and time in RFC 3339 format.
                            TIMESPEC='date', 'seconds', or 'ns' for
                            date and time to the indicated precision.
                            Date and time components are separated by
                            a single space: 2006-08-07 12:34:56-06:00
  // 设定时间
  -s, --set=STRING          set time described by STRING
  -u, --utc, --universal    print or set Coordinated Universal Time (UTC)
      --help     display this help and exit
      --version  output version information and exit
//时间格式规则参考
FORMAT controls the output.  Interpreted sequences are:

  %%   a literal %
  //查看星期
  %a   locale's abbreviated weekday name (e.g., Sun)
  %A   locale's full weekday name (e.g., Sunday)
  //查看月份
  %b   locale's abbreviated month name (e.g., Jan)
  %B   locale's full month name (e.g., January)
  //本地时间和日期
  %c   locale's date and time (e.g., Thu Mar  3 23:05:25 2005)
  //查看世纪
  %C   century; like %Y, except omit last two digits (e.g., 20)
  //当月中第几天
  %d   day of month (e.g., 01)
  //查看日期,等同%m/%d/%y
  %D   date; same as %m/%d/%y
  %e   day of month, space padded; same as %_d
  //日期,等同%Y-%m-%d
  %F   full date; same as %Y-%m-%d
  //年份后两位数字
  %g   last two digits of year of ISO week number (see %G)
  //年份
  %G   year of ISO week number (see %V); normally useful only with %V
  //月份,不是12制小时
  %h   same as %b
  //小时,24/12 小时制对应结果
  %H   hour (00..23)
  %I   hour (01..12)
  //一年中的第几天
  %j   day of year (001..366)
  //小时
  %k   hour, space padded ( 0..23); same as %_H
  %l   hour, space padded ( 1..12); same as %_I
  //月份
  %m   month (01..12)
  //分钟
  %M   minute (00..59)
  //换行
  %n   a newline
  //纳秒
  %N   nanoseconds (000000000..999999999)
  //上午下午,AM(am) / PM(pm)
  %p   locale's equivalent of either AM or PM; blank if not known
  %P   like %p, but lower case
  //12小时制时间
  %r   locale's 12-hour clock time (e.g., 11:11:04 PM)
  //等同 %H:%M
  %R   24-hour hour and minute; same as %H:%M
  //距离UTC时间 1970-01-01 00:00:00 的秒数
  %s   seconds since 1970-01-01 00:00:00 UTC
  //当前时间秒数
  %S   second (00..60)
  //tab
  %t   a tab
  //等同 %H:%M:%S
  %T   time; same as %H:%M:%S
  //星期数
  %u   day of week (1..7); 1 is Monday
  //一年中第几个星期
  %U   week number of year, with Sunday as first day of week (00..53)
  %V   ISO week number, with Monday as first day of week (01..53)
  //星期中第几日
  %w   day of week (0..6); 0 is Sunday
  //一年中第几周
  %W   week number of year, with Monday as first day of week (00..53)
  //日期和时间
  %x   locale's date representation (e.g., 12/31/99)
  %X   locale's time representation (e.g., 23:13:48)
  //年份后两位
  %y   last two digits of year (00..99)
  //年份
  %Y   year
  //时区
  %z   +hhmm numeric time zone (e.g., -0400)
  %:z  +hh:mm numeric time zone (e.g., -04:00)
  %::z  +hh:mm:ss numeric time zone (e.g., -04:00:00)
  %:::z  numeric time zone with : to necessary precision (e.g., -04, +05:30)
  %Z   alphabetic time zone abbreviation (e.g., EDT)

By default, date pads numeric fields with zeroes.
The following optional flags may follow '%':

  -  (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

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, or
O to use the locale's alternate numeric symbols if available.

Examples:
Convert seconds since the epoch (1970-01-01 UTC) to a date
  $ date --date='@2147483647'

Show the time on the west coast of the US (use tzselect(1) to find TZ)
  $ TZ='America/Los_Angeles' date

Show the local time for 9AM next Friday on the west coast of the US
  $ date --date='TZ="America/Los_Angeles" 09:00 next Fri'

也可以使用现有的工具来完成上述时间戳的查询,推荐一个本人先前使用的在线网页小工具:站长时间戳转换.

但是!!! 每次想用都要先打开浏览器,很不方便,使用date命令就很方便了。