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] file ...
DESCRIPTION
The
savelog
command saves and optionally compresses old copies of files. Older versions
of
file
are named:
R file . <number> <compress_suffix>
where
<number>
is the version number, 0 being the newest. Version numbers > 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 following
actions are performed:
1)
Version numbered files are cycled. Version
R cycle -2
is moved to version
R cycle -3,
version
R cycle -1
is moved to version
R cycle -2 ,
and so on. Finally version 0 is moved to version 1, and version
cycle
is deleted. Both
compressed names and uncompressed names are cycled, regardless of
R -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
R -m , -u , and -g
flags.
3)
The main file is moved to
R file.0 .
4)
If the
R -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
R -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
-r
use
rolldir
instead of . to roll files
-n
do not rotate empty files
BUGS
If a process is still writing to
R file.0 ,
and savelog moves it to
file.1
and compresses it, data could be lost.
ČLÁNKY DO MAILU