TRIMLOG(8L)       Misc. Reference Manual Pages        TRIMLOG(8L)



NAME
     trimlog - trim system log files

SYNOPSIS
     trimlog

DESCRIPTION
     Trimlog is used to trim system log files to keep  them  from
     growing without bound.  When invoked, it reads commands from
     the file %CONFIG% which tell it which files to trim, how  to
     trim them, and by how much they should be trimmed.

     The %CONFIG% file may contain any of the following commands:

     truncate filename n
          Truncate the named file to a length of no more  than  n
          bytes.   This  has  the  effect of removing all but the
          first n bytes of the file.  This command is useful  for
          zeroing log files.

     trimbylines filename n
          Trim the named file to a  length  of  no  more  than  n
          lines.  The last n lines will be copied to the front of
          the file, and the rest of  the  file  truncated.   This
          command is useful for deleting old entries from textual
          log files such as those maintained by syslog(8).

     trimbybytes filename n
          Trim the named file to a  length  of  no  more  than  n
          bytes.  The last n bytes will be copied to the front of
          the file, and the rest of  the  file  truncated.   This
          command  is useful for deleting old entries from binary
          log files such as /usr/adm/wtmp.

     sendsig filename signo
          Send the signal number signo  (see  sigvec(2))  to  the
          process  id contained in filename . This can be used to
          tell processes which use signals for notification, such
          as syslogd(8) or gated(8), to stop writing to their log
          file while trimlog is working on it.

     Lines which begin with a sharp sign (`#') in  the  log  file
     are treated as comments.

BUGS
     Trimming log files of some commands while they  are  running
     may  result  in ``holes'' being left in the log file.  There
     is no provision to signal the commands to  close  their  log
     files and reopen them.

AUTHOR
     David A. Curry, Research  Institute  for  Advanced  Computer



21 August 1990          Last change: SRI                        1






TRIMLOG(8L)       Misc. Reference Manual Pages        TRIMLOG(8L)



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21 August 1990          Last change: SRI                        2