*BASH User Commands Ubuntu 10.04.4 LTS Server coreutils
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ROTATELOGS(8)                     rotatelogs                     ROTATELOGS(8)



NAME
       rotatelogs - Piped logging program to rotate Apache logs


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



SUMMARY
       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.



OPTIONS
       -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.

       logfile
              The path plus basename of the logfile. If logfile  includes  any
              '%'  characters,  it  is  treated  as  a format string for strf-
              time(3). Otherwise,  the  suffix  .nnnnnnnnnn  is  automatically
              added and is the time in seconds. Both formats compute the start
              time from the beginning of the current period. For example, if a
              rotation  time of 86400 is specified, the hour, minute, and sec-
              ond fields created from the strftime(3) format will all be zero,
              referring  to  the beginning of the current 24-hour period (mid-
              night).

       rotationtime
              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.)

       filesizeM
              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.


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



       This  creates the files /var/logs/logfile.nnnn where nnnn is the system
       time at which the log nominally starts (this time will always be a mul-
       tiple  of  the  rotation time, so you can synchronize cron scripts with
       it). At the end of each rotation time (here after 24 hours) a  new  log
       is started.


            CustomLog "|bin/rotatelogs -l /var/logs/logfile.%Y.%m.%d 86400" common



       This  creates  the files /var/logs/logfile.yyyy.mm.dd where yyyy is the
       year, mm is the month, and dd is the day of  the  month.  Logging  will
       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.


PORTABILITY
       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 %m - 2-digit month


       o %p - am/pm of 12 hour clock (localized)


       o %S - 2-digit second


       o %U - 2-digit week of year (Sunday first day of week)


       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                2008-05-10                     ROTATELOGS(8)