리눅스 서버 시간 수동 설정

서버가 외부 시간 서버를 사용할 수 없어서 동기화가 안되는 경우, 시간을 수동으로 설정하려면 date 명령을 사용하면 됩니다. clock 명령도 있다고 하는데 내가 설정하는 서버에는 설치되어 있지 않아서 패스..

date 월일시분년.초

예를 들면 date 021011282014.33으로 하면 오늘 날짜(2014.02.10 11:28)의 33초 시간으로 시간을 변경하게 됩니다.

자세한 옵션은 아래의 man date 를 참조하면 되는데 솔직히 스크립트로 자동화하는 경우를 제외하곤 위의 사용법만 알아도 될 듯 하네요.

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DATE(1)                          User Commands                         DATE(1)

NAME

       date - print or set the system date and time

SYNOPSIS

       date [OPTION]... [+FORMAT]

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

DESCRIPTION

       Display the current time in the given FORMAT, or set the system date.

       -d, --date=STRING

              display time described by STRING, not `now'

       -f, --file=DATEFILE

              like --date once for each line of DATEFILE

       -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', `sec‐

              onds',  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

       -s, --set=STRING

              set time described by STRING

       -u, --utc, --universal

              print or set Coordinated Universal Time

       --help display this help and exit

       --version

              output version information and exit

       FORMAT 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 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 alter‐

       nate  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'

DATE STRING

       The --date=STRING is a mostly free format human  readable  date  string

       such  as  "Sun, 29 Feb 2004 16:21:42 -0800" or "2004-02-29 16:21:42" or

       even "next Thursday".  A date string may contain items indicating  cal‐

       endar  date,  time of day, time zone, day of week, relative time, rela‐

       tive date, and numbers.  An empty string indicates the beginning of the

       day.   The date string format is more complex than is easily documented

       here but is fully described in the info documentation.