rotatelogs [ -l ] [ -f ] logfile rotationtime|filesizeM [ offset ]

       rotatelogs  is  a  simple  program for use in conjunction with Apache's
       piped logfile feature. It supports rotation based on a time interval or
       maximum size of the log.

       -l     Causes the use of local time rather than GMT as the base for the
              interval or for strftime(3) formatting with size-based rotation.
              Note  that using -l in an environment which changes the GMT off-
              set (such as for BST or DST) can lead to unpredictable results!

       -f     Causes the logfile to be opened immediately, as soon as rotatel-
              ogs starts, instead of waiting for the first logfile entry to be
              read (for non-busy sites,  there  may  be  a  substantial  delay
              between when the server is started and when the first request is
              handled, meaning that the associated logfile  does  not  "exist"
              until  then,  which  causes problems from some automated logging
              tools). Available in version 2.2.9 and later.


              The time between log file rotations  in  seconds.  The  rotation
              occurs  at  the  beginning of this interval. For example, if the
              rotation time is 3600, the log  file  will  be  rotated  at  the
              beginning  of every hour; if the rotation time is 86400, the log
              file will be rotated every night at midnight.  (If  no  data  is
              logged during an interval, no file will be created.)

              The  maximum  file size in megabytes followed by the letter M to
              specify size rather than time.

       offset The number of minutes offset  from  UTC.  If  omitted,  zero  is
              assumed  and  UTC is used. For example, to use local time in the
              zone UTC -5 hours, specify a value of -300 for this argument. In
              most cases, -l should be used instead of specifying an offset.

            CustomLog "|bin/rotatelogs /var/logs/logfile 86400" common

       This  creates the files /var/logs/logfile.nnnn where nnnn is the system
       switch to a new file every day at midnight, local time.

            CustomLog "|bin/rotatelogs /var/logs/logfile 5M" common

       This  configuration  will rotate the logfile whenever it reaches a size
       of 5 megabytes.

            ErrorLog "|bin/rotatelogs /var/logs/errorlog.%Y-%m-%d-%H_%M_%S 5M"

       This configuration will rotate the error logfile whenever it reaches  a
       size of 5 megabytes, and the suffix to the logfile name will be created
       of the form errorlog.YYYY-mm-dd-HH_MM_SS.

       The following logfile format string substitutions should  be  supported
       by  all  strftime(3)  implementations, see the strftime(3) man page for
       library-specific extensions.

       o %A - full weekday name (localized)

       o %a - 3-character weekday name (localized)

       o %B - full month name (localized)

       o %b - 3-character month name (localized)

       o %c - date and time (localized)

       o %d - 2-digit day of month

       o %H - 2-digit hour (24 hour clock)

       o %I - 2-digit hour (12 hour clock)

       o %j - 3-digit day of year

       o %M - 2-digit minute

       o %W - 2-digit week of year (Monday first day of week)

       o %w - 1-digit weekday (Sunday first day of week)

       o %X - time (localized)

       o %x - date (localized)

       o %Y - 4-digit year

       o %y - 2-digit year

       o %Z - time zone name

       o %% - literal `%'

Apache HTTP Server                2010-11-06                     ROTATELOGS(8)
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