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Full Discussion: Deleting log file
Top Forums UNIX for Advanced & Expert Users Deleting log file Post 12789 by Kelam_Magnus on Monday 7th of January 2002 01:57:31 PM
Old 01-07-2002
better way

Instead of deleting the file, just zero it out by using this concise command.


# > /some/log/file.log

This redirects "nothing" into the file thus erasing the data without removing the file.

Actually you might want to save the last several lines of the file so that you can see the last few days or so. There is a way to cat or tail the last several lines and redirect it to the same logfile, but I just can't remember how to do it. I will find it and resubmit later.



Smilie
 

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LOGSAVE(8)						      System Manager's Manual							LOGSAVE(8)

NAME
logsave - save the output of a command in a logfile SYNOPSIS
logsave [ -asv ] logfile cmd_prog [ ... ] DESCRIPTION
The logsave program will execute cmd_prog with the specified argument(s), and save a copy of its output to logfile. If the containing directory for logfile does not exist, logsave will accumulate the output in memory until it can be written out. A copy of the output will also be written to standard output. If cmd_prog is a single hyphen ('-'), then instead of executing a program, logsave will take its input from standard input and save it in logfile logsave is useful for saving the output of initial boot scripts until the /var partition is mounted, so the output can be written to /var/log. OPTIONS
-a This option will cause the output to be appended to logfile, instead of replacing its current contents. -s This option will cause logsave to skip writing to the log file text which is bracketed with a control-A (ASCII 001 or Start of Header) and control-B (ASCII 002 or Start of Text). This allows progress bar information to be visible to the user on the console, while not being written to the log file. -v This option will make logsave to be more verbose in its output to the user. AUTHOR
Theodore Ts'o (tytso@mit.edu) SEE ALSO
fsck(8) E2fsprogs version 1.44.1 March 2018 LOGSAVE(8)
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