SAVELOG(8)							    SAVELOG(8)

NAME
       savelog - save a log file

SYNOPSIS
       savelog	[-m  mode] [-u user] [-g group] [-t] [-p] [-c cycle] [-l] [-j]
       [-J] [-1 .. -9] [-C] [-d] [-l] [-r rolldir] [-n] [-q]  [-D  dateformat]
       file ...

DESCRIPTION
       The  savelog  command  saves  and  optionally  compresses old copies of
       files.  Older versions of file are named:

	      file.<number><compress_suffix>

       where <number> is the version number, 0 being the newest.  Version num‐
       bers > 0 are compressed unless -l prevents it.  Version number 0 is not
       compressed because a process might still	 have  file  opened  for  I/O.
       Only cycle versions of the file are kept.

       If the file does not exist and -t was given, it will be created.

       For files that do exist and have lengths greater than zero, the follow‐
       ing actions are performed:

       1)     Version numbered files are cycled.  Version file.2 is  moved  to
	      version  file.3,	version file.1 is moved to version file.2, and
	      so on.  Finally version file.0 is moved to version  file.1,  and
	      version file is deleted.	Both compressed names and uncompressed
	      names are cycled, regardless of -l.  Missing version  files  are
	      ignored.

       2)     The  new	file.1 is compressed unless the -l flag was given.  It
	      is changed subject to the -m, -u, and -g flags.

       3)     The main file is moved to file.0.

       4)     If the -m, -u, -g,  -t, or -p flags are  given,  then  an	 empty
	      file  is	created subject to the given flags.  With the -p flag,
	      the file is created with the same owner, group, and  permissions
	      as before.

       5)     The new file.0 is changed subject to the -m, -u, and -g flags.

OPTIONS
       -m mode
	      chmod the log files to mode, implies -t

       -u user
	      chown log files to user, implies -t

       -g group
	      chgrp log files to group, implies -t

       -c cycle
	      Save cycle versions of the logfile (default: 7). The cycle count
	      must be at least 2.

       -t     touch new logfile into existence

       -l     don't compress any log files (default: do compress)

       -p     preserve owner, group, and permissions of logfile

       -j     compress with bzip2 instead of gzip

       -J     compress with xz instead of gzip

	      For xz no strength option is set, and xz decides on the  default
	      based  on the total amount of physical RAM. Note that xz can use
	      a very large amount of memory for the higher compression levels.

       -1 .. -9
	      compression strength or memory usage (default: 9, except for xz)

       -C     force cleanup of cycled logfiles

       -d     use standard date for rolling

       -D dateformat
	      override date format, in the form of [MMDDhhmm[[CC]YY][.ss]]

       -r     use rolldir instead of . to roll files

       -n     do not rotate empty files

       -q     be quiet

BUGS
       If a process is still writing to file.0, and savelog moves it to file.1
       and compresses it, data could be lost.

SEE ALSO
       logrotate(8)

Debian				  30 Jun 2010			    SAVELOG(8)

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