重要参数讲解

  1. Usage: date [OPTION]... [+FORMAT]
  2.   or:  date [-u|--utc|--universal] [MMDDhhmm[[CC]YY][.ss]]
  4. Mandatory arguments to long options are mandatory for short options too.
  5.   -d, --date=STRING          display time described by STRING, not 'now'
  7. FORMAT controls the output.  Interpreted sequences are:
  9.   %d   day of month (e.g., 01)
  10.   %F   full date; like %+4Y-%m-%d
  11.   %H   hour (00..23)
  12.   %I   hour (01..12)
  13.   %m   month (01..12)
  14.   %M   minute (00..59)
  15.   %N   nanoseconds (000000000..999999999) 获取当前时间的纳秒，仅含有秒到纳秒部分，和秒组合就形成真正的纳秒
  16.   %s   seconds since the Epoch (1970-01-01 00:00 UTC)  秒级别的时间戳
  17.   %S   second (00..60)
  18.   %T   time; same as %H:%M:%S
  19.   %V   ISO week number, with Monday as first day of week (01..53)
  20.   %Y   year
  22. Examples:
  23.   Convert seconds since the epoch (1970-01-01 UTC) to a date
  24.     $ date --date='@2147483647'
  26.   Show the time on the west coast of the US (use tzselect(1) to find TZ)
  27.     $ TZ='America/Los_Angeles' date
  29.   Show the local time for 9AM next Friday on the west coast of the US
  30.     $ date --date='TZ="America/Los_Angeles" 09:00 next Fri'

获取时间戳

当前的时间戳

  1. # 秒
  2. ➜  Desktop date +%s
  3. 1634886198
  5. # 毫秒
  6. ➜  Desktop date +%s%3N
  7. 1634886226634
  9. # 微秒
  10. ➜  Desktop date +%s%6N
  11. 1634886342825340
  13. # 纳秒
  14. ➜  Desktop date +%s%N
  15. 1634886360122580300

当前时间一天前的时间戳(ms)

  1. date +%s%3N --date="-1 day"

当前时间一天后的时间戳(ms)

  1. date +%s%3N --date="1 day"

当前时间一月前的时间戳(ms)

  1. date +%s%3N --date="-1 month"

当前时间一月后的时间戳(ms)

  1. date +%s%3N --date="1 month"

将指定的时间转成时间戳(ms)

  1. ➜  Desktop date +%s%3N -d '2021-03-22T16:14:16+08:00'
  2. 1616400856000

将秒级别的时间戳转成时间

  1. ➜  Desktop date "+%F %T" -d '@1634800545'
  2. 2021-10-21 15:15:45

获取日期

年月

  1. date "+%Y%m"

年月日

  1. date "+%Y/%m/%d"

年月日时分秒

  1. ➜  Desktop date "+%Y-%m-%d %H:%M:%S"
  2. 2021-10-22 15:23:29
  4. ➜  Desktop date "+%F %T"
  5. 2021-10-22 15:23:48

当前时间的昨天

  1. ➜  Desktop date "+%F %T"
  2. 2021-10-22 15:27:08
  4. ➜  Desktop date "+%F %T" -d "yesterday"
  5. 2021-10-21 15:26:51
  7. ➜  Desktop date "+%F %T" -d "last day"
  8. 2021-10-21 15:27:00

获取月份的首日

  1. date "+%Y/%m/01"

获取上个月月末

  1. # 第一步获取当月的第一天
  2. ➜  Desktop date "+%Y/%m/01"
  3. 2021/10/01
  5. # 在当月的第一天的时间上减去一天
  6. ➜  Desktop date -d "$(date "+%Y/%m/01") -d yesterday" +%F
  7. 2021-09-30

参考：
https://www.cnblogs.com/huixuexidezhu/p/9573194.html
https://www.jb51.net/article/69170.htm
https://blog.csdn.net/shixiaoguo90/article/details/80195052/
https://cloud.tencent.com/developer/ask/28424