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Full Discussion: Splitting a large log file
Top Forums UNIX for Dummies Questions & Answers Splitting a large log file Post 6814 by LivinFree on Thursday 13th of September 2001 12:07:18 AM
Old 09-13-2001
Why, use the split command, of course!
See the split man page for details on use.

Note: It may be very important to stop the process creating the log file, if even for only a moment, while you work on the log. The best idea is to move the log file to another name, then create a new logfile with the same name for the webserver to write to. If the webserver tries to write to a log, and the log is locked for editing or doesn't exist, it can cause some problems.
 

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LOG2PCAP(1)							   User Commands						       LOG2PCAP(1)

NAME
log2pcap - Extract network traces from Samba log files SYNOPSIS
log2pcap [-h] [-q] [logfile] [pcap_file] DESCRIPTION
This tool is part of the samba(7) suite. log2pcap reads in a samba log file and generates a pcap file (readable by most sniffers, such as ethereal or tcpdump) based on the packet dumps in the log file. The log file must have a log level of at least 5 to get the SMB header/parameters right, 10 to get the first 512 data bytes of the packet and 50 to get the whole packet. OPTIONS
-h If this parameter is specified the output file will be a hex dump, in a format that is readable by the text2pcap utility. -q Be quiet. No warning messages about missing or incomplete data will be given. logfile Samba log file. log2pcap will try to read the log from stdin if the log file is not specified. pcap_file Name of the output file to write the pcap (or hexdump) data to. If this argument is not specified, output data will be written to stdout. -?|--help Print a summary of command line options. EXAMPLES
Extract all network traffic from all samba log files: $ log2pcap < /var/log/* > trace.pcap Convert to pcap using text2pcap: $ log2pcap -h samba.log | text2pcap -T 139,139 - trace.pcap VERSION
This man page is correct for version 3 of the Samba suite. BUGS
Only SMB data is extracted from the samba logs, no LDAP, NetBIOS lookup or other data. The generated TCP and IP headers don't contain a valid checksum. SEE ALSO
text2pcap(1), ethereal(1) AUTHOR
The original Samba software and related utilities were created by Andrew Tridgell. Samba is now developed by the Samba Team as an Open Source project similar to the way the Linux kernel is developed. This manpage was written by Jelmer Vernooij. Samba 4.0 06/17/2014 LOG2PCAP(1)
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