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Full Discussion: Delete lines prior to a specific date in a log file.
Top Forums Shell Programming and Scripting Delete lines prior to a specific date in a log file. Post 302304242 by ahSher on Sunday 5th of April 2009 11:30:20 PM
Old 04-06-2009
Delete lines prior to a specific date in a log file.
Hi all.

I have a database log file in which log data get appended to it daily. I want to do a automatic maintainence of this log by going through the log and deleting lines belonging to a certain date.

How should i do it? Please help. Thanks.

Example. To delete all lines prior to Jun 3.

My content of my log is like below:
Sun Jun 1 01:38:25 2008
Completed: ALTER DATABASE OPEN
Sun Jun 1 22:00:40 2008
Thread 1 advanced to log sequence 2518
Current log# 1 seq# 2518 mem# 0: /u03/oradata/sbdevdb/redo01.log
Current log# 1 seq# 2518 mem# 1: /u03/oradata/sbdevdb/redo04.log
Mon Jun 2 10:00:33 2008
Thread 1 advanced to log sequence 2519
Current log# 2 seq# 2519 mem# 0: /u04/oradata/sbdevdb/redo02.log
Current log# 2 seq# 2519 mem# 1: /u04/oradata/sbdevdb/redo05.log
Mon Jun 2 22:01:10 2008
Thread 1 advanced to log sequence 2520
Current log# 3 seq# 2520 mem# 0: /u05/oradata/sbdevdb/redo03.log
Current log# 3 seq# 2520 mem# 1: /u05/oradata/sbdevdb/redo06.log
Tue Jun 3 01:30:03 2008
Starting background process EMN0
EMN0 started with pid=20, OS id=639158
Tue Jun 3 01:30:03 2008
Shutting down instance: further logons disabled
Tue Jun 3 01:30:03 2008


 

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LEARN ABOUT DEBIAN

petitboot-nc

petitboot-nc(8) 					    BSD System Manager's Manual 					   petitboot-nc(8)

NAME

     petitboot-nc -- Petitboot ncurses bootloader UI

SYNOPSIS

     petitboot-nc [-d, --start-daemon] [-h, --help] [-l, --log log-file] [-V, --version]

DESCRIPTION

     petitboot-nc is an ncurses based interface to the Petitboot bootloader.

     Petitboot is a Linux kexec based bootloader that supports loading Linux kernel and initrd images from any device that can be mounted by
     Linux.  It can also load images from the network using the HTTP, HTTPS, NFS, SFTP, and TFTP protocols.

OPTIONS

     -d, --start-daemon
	     Start pb-discover, the petitboot dynamic device discovery daemon, if it has not been started.  This option is mainly useful when run-
	     ning petitboot as a stand-alone application.

     -h, --help
	     Print a help message.

     -l, --log log-file
	     Log messages to the file log-file.  The default log is a file /var/log/petitboot-nc.log.  New messages are appended to an existing
	     log file.

     -V, --version
	     Display the program version number.

SEE ALSO

     petitboot(8), petitboot-twin(8), pb-discover(8), pb-event(8)

REPORTING BUGS

     Send bug reports to Geoff Levand <geoff @ infradead.org>

BSD
								   June 1, 2019 							       BSD
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