savelog(8) - phpMan

SAVELOG(8)                                                                             SAVELOG(8)



NAME
       savelog - save a log file

SYNOPSIS
       savelog  [-m  mode] [-u user] [-g group] [-t] [-p] [-c cycle] [-l] [-j] [-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 numbers > 0 are com-
       pressed 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 following actions are per-
       formed:


       1)     Version numbered files are cycled.  Version cycle-2 is moved  to  version  cycle-3,
              version  cycle-1  is  moved  to  version cycle-2 , and so on.  Finally version 0 is
              moved to version 1, and version cycle is deleted.  Both compressed names and uncom-
              pressed 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  sub-
              ject  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.

              Since the version numbers start with 0, version number cycle is never formed.   The
              cycle count must be at least 2.


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)

       -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

       -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.



Debian                                   21 October 2007                               SAVELOG(8)

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