Linux命令date 日期时间和Unix时间戳互转

1、将当前时间以Unix时间戳表示

date +%s

输出如下：

1512692477

2、转换指定日期为Unix时间戳

date -d '2017-12-08 08:22' +%s

输出如下：

1512692520

3、将Unix时间戳转换为日期时间

• 不指定日期时间的格式

date -d @1512692520

• 指定日期格式的转换

date -d @1512692520 +"%Y-%m-%d %H:%M:%S"

输出结果如下：

root@ubuntu:/home/jiankunking# date --helpUsage: 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.  -d, --date=STRING          display time described by STRING, not 'now'  -f, --file=DATEFILE        like --date; once for each line of DATEFILE  -I[FMT], --iso-8601[=FMT]  output date/time in ISO 8601 format.                               FMT='date' for date only (the default),                               'hours', 'minutes', 'seconds', or 'ns'                               for date and time to the indicated precision.                               Example: 2006-08-14T02:34:56-0600  -R, --rfc-2822             output date and time in RFC 2822 format.                               Example: Mon, 14 Aug 2006 02:34:56 -0600      --rfc-3339=FMT         output date/time in RFC 3339 format.                               FMT='date', 'seconds', or 'ns'                               for date and time to the indicated precision.                               Example: 2006-08-14 02:34:56-06:00  -r, --reference=FILE       display the last modification time of FILE  -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 exitFORMAT controls the output.  Interpreted sequences are:  %%   a literal %  %a   locale's abbreviated weekday name (e.g., Sun)  %A   locale's full weekday name (e.g., Sunday)  %b   locale's abbreviated month name (e.g., Jan)  %B   locale's full month name (e.g., January)  %c   locale's date and time (e.g., Thu Mar  3 23:05:25 2005)  %C   century; like %Y, except omit last two digits (e.g., 20)  %d   day of month (e.g., 01)  %D   date; same as %m/%d/%y  %e   day of month, space padded; same as %_d  %F   full date; same as %Y-%m-%d  %g   last two digits of year of ISO week number (see %G)  %G   year of ISO week number (see %V); normally useful only with %V  %h   same as %b  %H   hour (00..23)  %I   hour (01..12)  %j   day of year (001..366)  %k   hour, space padded ( 0..23); same as %_H  %l   hour, space padded ( 1..12); same as %_I  %m   month (01..12)  %M   minute (00..59)  %n   a newline  %N   nanoseconds (000000000..999999999)  %p   locale's equivalent of either AM or PM; blank if not known  %P   like %p, but lower case  %r   locale's 12-hour clock time (e.g., 11:11:04 PM)  %R   24-hour hour and minute; same as %H:%M  %s   seconds since 1970-01-01 00:00:00 UTC  %S   second (00..60)  %t   a tab  %T   time; same as %H:%M:%S  %u   day of week (1..7); 1 is Monday  %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)  %w   day of week (0..6); 0 is Sunday  %W   week number of year, with Monday as first day of week (00..53)  %x   locale's date representation (e.g., 12/31/99)  %X   locale's time representation (e.g., 23:13:48)  %y   last two digits of year (00..99)  %Y   year  %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 possibleAfter any flags comes an optional field width, as a decimal number;then an optional modifier, which is eitherE to use the locale's alternate representations if available, orO 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' dateShow the local time for 9AM next Friday on the west coast of the US  $ date --date='TZ="America/Los_Angeles" 09:00 next Fri'GNU coreutils online help: <http://www.gnu.org/software/coreutils/>Full documentation at: <http://www.gnu.org/software/coreutils/date>or available locally via: info '(coreutils) date invocation'

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作者：jiankunking 出处：http://blog.csdn.net/jiankunking