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Full Discussion: how to append line of of data to file
Top Forums Shell Programming and Scripting how to append line of of data to file Post 302304792 by quirkasaurus on Tuesday 7th of April 2009 09:57:37 AM
Old 04-07-2009
a.) you can get the file size and other stuff using "lstat" then simply count
the line size once you start reading the file. Getting to the desired threshold,
start writing to a temp file. Overwrite the original.

b.) rotate the file log names using days of the week: log_Monday, log_Tuesday,
etc... Then the logs automatically remain a certain size and get overwriten.
This trick can be done using the days of the month, julian dates, whatever
seems appropriate for your archival needs.
 

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LEARN ABOUT OSF1

log

Log(4)							     Kernel Interfaces Manual							    Log(4)

NAME

       Log, .Log - Contains the uucp program log files

SYNOPSIS

       /usr/spool/uucp/.Log

DESCRIPTION

       The /usr/spool/uucp/.Log directories contain uucp program log files.  The uucp program normally places status information about each trans-
       action in the appropriate log file each time you use the networking utilities facility.	All transactions of the uucico and  uuxqt  daemons
       are  logged  in	files named for the remote system concerned.  The files are stored in a subdirectory of the /usr/spool/uucp/.Log directory
       named for the daemon involved.  Thus, the log files are named with a form of the following: /usr/spool/uucp/.Log/DaemonName/SystemName

       The uucp and uuto commands call the uucico daemon.  The uucico daemon activities for a particular remote system are logged in  the  System-
       Name file in the /usr/spool/uucp/.Log/uucico directory on the local system.

       The uux and uusend commands call the uuxqt daemon.  The uuxqt daemon activities for a particular remote system are logged in the SystemName
       file in the /usr/spool/uucp/.Log/uuxqt directory on the local system.

       When more than one uucp process is running, however, the system cannot access the standard log file, so it places the status information in
       a file with a .Log prefix that covers just the single transaction.

       The  uucp  program can automatically append the temporary log files to a primary log file.  This is called compacting the log files, and is
       handled by the uudemon.cleanu command, a shell procedure, which combines the log files of the activities of the uucico and uuxqt daemons on
       a system and stores them in the /usr/spool/uucp/.Old directory.

       The  default  is for the uudemon.cleanu command to save log files that are 2 days old.  This default can be changed by modifying the appro-
       priate line in the shell script.  If storage space is a problem on a particular system, reduce the number of days that the files  are  kept
       in the individual log files.

       The uulog command can be used to view the uucp program log files.

RELATED INFORMATION

       Daemons: cron, uucico(8), uusched(8)

       Commands: uucp(1), uudemon.cleanu(4), uulog(1), uusend(1), uuto(1), uux(1) delim off

																	    Log(4)
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