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NEWSYSLOG.CONF(5)         FreeBSD File Formats Manual        NEWSYSLOG.CONF(5)

     newsyslog.conf -- newsyslog(8) configuration file

     The newsyslog.conf file is used to set log file rotation configuration
     for the newsyslog(8) utility.  Configuration may designate that logs are
     rotated based on size, last rotation time, or time of day.  The
     newsyslog.conf file can also be used to designate secure permissions to
     log files at rotation time.  During initialization, newsyslog(8) reads a
     configuration file, normally /etc/newsyslog.conf, to determine which logs
     may potentially be rotated and archived.  Each line has five mandatory
     fields and four optional fields, separated with whitespace.  Blank lines
     or lines beginning with `#' are ignored.  If `#' is placed in the middle
     of the line, the `#' character and the rest of the line after it is
     ignored.  To prevent special meaning, the `#' character may be escaped
     with `\\'; in this case preceding `\\' is removed and `#' is treated as
     an ordinary character.  The fields of the configuration file are as fol-

             Name of the system log file to be archived, or the literal string
             ``<default>''.  The special default entry will only be used if a
             log file name is given as a command line argument to
             newsyslog(8), and if that log file name is not matched by any
             other line in the configuration file.

             This optional field specifies the owner and group for the archive
             file.  The `:' is essential regardless if the owner or group
             field is left blank or contains a value.  The field may be
             numeric, or a name which is present in /etc/passwd or /etc/group.

     mode    Specify the file mode of the log file and archives.

     count   Specify the maximum number of archive files which may exist.
             This does not consider the current log file.

     size    When the size of the log file reaches size in kilobytes, the log
             file will be trimmed as described above.  If this field contains
             an asterisk (`*'), the log file will not be trimmed based on

     when    The when field may consist of an interval, a specific time, or
             both.  If the when field contains an asterisk (`*'), log rotation
             will solely depend on the contents of the size field.  Otherwise,
             the when field consists of an optional interval in hours, usually
             followed by an `@'-sign and a time in restricted ISO 8601 format.
             Additionally, the format may also be constructed with a `$' sign
             along with a rotation time specification of once a day, once a
             week, or once a month.

             If a time is specified, the log file will only be trimmed if
             newsyslog(8) is run within one hour of the specified time.  If an
             interval is specified, the log file will be trimmed if that many
             hours have passed since the last rotation.  When both a time and
             an interval are specified then both conditions must be satisfied
             for the rotation to take place.

             There is no provision for the specification of a timezone.  There
             is little point in specifying an explicit minutes or seconds com-
             ponent in the current implementation, since the only comparison
             is ``within the hour''.

             ISO 8601 restricted time format:

             The lead-in character for a restricted ISO 8601 time is an `@'
             sign.  The particular format of the time in restricted ISO 8601
             is: [[[[[cc]yy]mm]dd][T[hh[mm[ss]]]]].  Optional date fields
             default to the appropriate component of the current date;
             optional time fields default to midnight; hence if today is Jan-
             uary 22, 1999, the following date specifications are all equiva-


             Day, week, and month time format:

             The lead-in character for day, week, and month specification is a
             `$' sign.  The particular format of day, week, and month specifi-
             cation is: [Dhh], [Ww[Dhh]], and [Mdd[Dhh]], respectively.
             Optional time fields default to midnight.  The ranges for day and
             hour specifications are:

                   hh      hours, range 0..23
                   w       day of week, range 0..6, 0 = Sunday
                   dd      day of month, range 1..31, or one of the letters
                           `L' or `l' to specify the last day of the month.

             Some examples:

                   $D0     rotate every night at midnight (same as @T00)
                   $D23    rotate every day at 23:00 (same as @T23)
                   $W0D23  rotate every week on Sunday at 23:00
                   $W5D16  rotate every week on Friday at 16:00
                   $M1D0   rotate at the first day of every month at midnight
                           (i.e., the start of the day; same as @01T00)
                   $M5D6   rotate on every 5th day of month at 6:00 (same as

     flags   This optional field is made up of one or more characters that
             specify any special processing to be done for the log files
             matched by this line.  The following are valid flags:

             B       indicates that the log file is a binary file, or has some
                     special format.  Usually newsyslog(8) inserts an ASCII
                     message into a log file during rotation.  This message is
                     used to indicate when, and sometimes why the log file was
                     rotated.  If B is specified, then that informational mes-
                     sage will not be inserted into the log file.

             C       indicates that the log file should be created if it does
                     not already exist, and if the -C option was also speci-
                     fied on the command line.

             D       indicates that newsyslog(8) should set the UF_NODUMP flag
                     when creating a new version of this log file.  This
                     option would effect how the dump(8) command treats the
                     log file when making a file system backup.

             G       indicates that the specified logfile_name is a shell pat-
                     tern, and that newsyslog(8) should archive all filenames
                     matching that pattern using the other options on this
                     line.  See glob(3) for details on syntax and matching

             J       indicates that newsyslog(8) should attempt to save disk
                     space by compressing the rotated log file using bzip2(1).

             N       indicates that there is no process which needs to be sig-
                     naled when this log file is rotated.

             U       indicates that the file specified by path_to_pid_file
                     will contain the ID for a process group instead of a
                     process.  This option also requires that the first line
                     in that file be a negative value to distinguish it from a
                     process ID.

             Z       indicates that newsyslog(8) should attempt to save disk
                     space by compressing the rotated log file using gzip(1).

             -       a minus sign will not cause any special processing, but
                     it can be used as a placeholder to create a flags field
                     when you need to specify any of the following fields.

             This optional field specifies the file name containing a daemon's
             process ID or to find a group process ID if the U flag was speci-
             fied.  If this field is present, a signal_number is sent the
             process ID contained in this file.  If this field is not present,
             then a SIGHUP signal will be sent to syslogd(8), unless the N
             flag has been specified.  This field must start with `/' in order
             to be recognized properly.

             This optional field specifies the signal number that will be sent
             to the daemon process (or to all processes in a process group, if
             the U flag was specified).  If this field is not present, then a
             SIGHUP signal will be sent.

     bzip2(1), gzip(1), syslog(3), chown(8), newsyslog(8), syslogd(8)

     This manual page first appeared in FreeBSD 4.10.

FreeBSD 6.2                      June 3, 2004                      FreeBSD 6.2


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