Sponsored Content
Full Discussion: tail and log rotation
Top Forums Shell Programming and Scripting tail and log rotation Post 302727491 by hergp on Tuesday 6th of November 2012 09:53:35 AM
Old 11-06-2012
If you are on Linux or have GNU coreutils available, you can use

Code:
tail --follow=name filename

When logrotation happens, you will see a message like

Code:
tail: filename: No such file or directory
tail: `filename' has appeared;  following end of new file

You can redirect stderr to /dev/null if you do not want to see this message.
This User Gave Thanks to hergp For This Post:
 

10 More Discussions You Might Find Interesting

1. HP-UX

Log rotation on HP-UX

Can anyone post a sample log rotate and archive configuration on HP-UX? I really don't know how to do that... :( (3 Replies)
Discussion started by: untamed
3 Replies

2. Shell Programming and Scripting

log rotation

Hello all. Due to some reason I can not use HUP to rotate needed log files. So I use the standard method: cp $file $file.1 cat /dev/null > $file But if Java application in this time writing the output to $file, in the beginning of it appears many "^@^@^@^@^@^@". How to avoid it? Or how... (6 Replies)
Discussion started by: mirusnet
6 Replies

3. Shell Programming and Scripting

log rotation and autosys

Hi, I current have many apps servers running and need to create a script to rotate logs daily, and then create an autosys job to delete logs that are older than 30 days. I was thrown into this and have no idea what to do, please help me get started, thanks! -----Post Update----- and i will... (6 Replies)
Discussion started by: new2learn09
6 Replies

4. Solaris

Log Rotation of Catalina.out

Hi, Recently i received a request to rotate logs of catalina.out (tomcat). The file size was about 807 MB. I used logadm to truncate the log ( -c ) and zip (-z 0) it. Everything worked fine, catalina.out.0.gz was created (22 MB) and the size of original catalina.out became 0kb. After... (2 Replies)
Discussion started by: Mack1982
2 Replies

5. Solaris

Solaris log rotation

HI, What is log rotation in Solaris ? What are the essential steps to perform log rotation in Solaris? (1 Reply)
Discussion started by: Revathi@1
1 Replies

6. Solaris

Log rotation, twice

hi folk, need advise regarding the log rotation, i have the logadm set at 30 2 * * * /usr/sbin/logadm so it supposed to rotate once per day, but now it rotated twice! but someone my log will rotate at 2:30 AM, but then another 2 hours later, it creates a new and rotate a new log again,... (2 Replies)
Discussion started by: dehetoxic
2 Replies

7. UNIX for Dummies Questions & Answers

Log Rotation

Hi Guys, Good morning, I just want to know and collect ideas on this one. Regarding rotation of logs as I've observed it's not consistently functioning. I have a server with 8 Partitions, each partition has a dedicated directory for the logs that is needed and I set it every 5mins (300secs) the... (1 Reply)
Discussion started by: rymnd_12345
1 Replies

8. Solaris

Log rotation

Hi All! I seem to have a problem with log rotation, unless I am doing something wrong, I have type the following command for testing purposes to see if the -s option works but he did not: logadm -w /var/adm/messages -C 8 -c -s 512k -t '/var/adm/messages.$n' -z 1 the file is now at this... (7 Replies)
Discussion started by: fretagi
7 Replies

9. OS X (Apple)

Mavericks log rotation

In Mavericks, Apple has apparently moved control of log rotation to ASL. There's a 'ttl' value to determine how long log files will stick around for. I can compress them, change the way they're named, limit them by size, etc. But the one thing I cannot find is how to NOT keep one log file per... (0 Replies)
Discussion started by: jnojr
0 Replies

10. Shell Programming and Scripting

When redirecting tail -F output fail after log rotation?

Redirecting the tail output fails when log rotation happens even though i have used -F. But when i tail and see the output on terminal this does not happen. Note i have also used & to execute this statement in background. Suppose if i want to tail a file /opt/SAMPLE.txt and redirect its output... (1 Reply)
Discussion started by: CN1
1 Replies
TAIL(1) 								FSF								   TAIL(1)

NAME
tail - output the last part of files SYNOPSIS
tail [OPTION]... [FILE]... DESCRIPTION
Print the last 10 lines of each FILE to standard output. With more than one FILE, precede each with a header giving the file name. With no FILE, or when FILE is -, read standard input. Mandatory arguments to long options are mandatory for short options too. --retry keep trying to open a file even if it is inaccessible when tail starts or if it becomes inaccessible later -- useful only with -f -c, --bytes=N output the last N bytes -f, --follow[={name|descriptor}] output appended data as the file grows; -f, --follow, and --follow=descriptor are equivalent -F same as --follow=name --retry -n, --lines=N output the last N lines, instead of the last 10 --max-unchanged-stats=N with --follow=name, reopen a FILE which has not changed size after N (default 5) iterations to see if it has been unlinked or renamed (this is the usual case of rotated log files) --pid=PID with -f, terminate after process ID, PID dies -q, --quiet, --silent never output headers giving file names -s, --sleep-interval=S with -f, sleep for approximately S seconds (default 1.0) between iterations. -v, --verbose always output headers giving file names --help display this help and exit --version output version information and exit If the first character of N (the number of bytes or lines) is a `+', print beginning with the Nth item from the start of each file, other- wise, print the last N items in the file. N may have a multiplier suffix: b for 512, k for 1024, m for 1048576 (1 Meg). With --follow (-f), tail defaults to following the file descriptor, which means that even if a tail'ed file is renamed, tail will continue to track its end. This default behavior is not desirable when you really want to track the actual name of the file, not the file descrip- tor (e.g., log rotation). Use --follow=name in that case. That causes tail to track the named file by reopening it periodically to see if it has been removed and recreated by some other program. AUTHOR
Written by Paul Rubin, David MacKenzie, Ian Lance Taylor, and Jim Meyering. REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>. COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. SEE ALSO
The full documentation for tail is maintained as a Texinfo manual. If the info and tail programs are properly installed at your site, the command info tail should give you access to the complete manual. tail (coreutils) 4.5.3 February 2003 TAIL(1)
All times are GMT -4. The time now is 06:20 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy