08-03-2008
Grep or Tail in shell script
Hi,
I am writing a shell script that checks catalina logs on a production system and mails me if it detects errors.
It greps the logs for known errors which i have defined as variables.
The problem is the logs are huge, approx 30,000 before they rotate.
So I am forced to use grep instead of tailing 30,000 lines.
But while testing grep I end up getting re-notified of previous errors that still exist in the logs.
Is there another way of doing this?
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello:
I'm a very newbee at UNIX/AIX.
What i want to do is to tail a file from the bottom until a certain string is found and write all the lines after the found string to another file.
I've tried out a lot of combination with tail and grep but doesn't find the good one.
Could someone help... (4 Replies)
Discussion started by: Felix2511
4 Replies
2. Shell Programming and Scripting
Hello all,
I have some weird problem that kinda baffles me. Say I have the following test file:
claudia:~/tmp$ cat testfile.txt
This is a test line
This is the second test line
And yeah, this is the third test line
Then say I want to tail the file, grep for the word "third" then... (7 Replies)
Discussion started by: sylaan
7 Replies
3. Shell Programming and Scripting
The program that is running on my machine generates log files. I want to be able to know the number of lines that contain "FT" in the most recent log file. I wrote the following, but it always returns zero. And I know the count is not zero. Any ideas?
ls -rt *.log | tail -n 1 | grep -c FT (6 Replies)
Discussion started by: sdilucca
6 Replies
4. UNIX for Dummies Questions & Answers
I need to tail -f a file so I can monitor it as it is being written to. However, there is a lot of garbage in the file that I don't care about. So normally I would just pipe and grep for the string that is important to me. However, in this case, there are two things I need to grep for. I can't... (3 Replies)
Discussion started by: Silver11
3 Replies
5. UNIX for Dummies Questions & Answers
I have a basic tail/grep question. I have logs that are generated & kept in a directory called alert_audit. I am using "tail" to see the logs that are coming in, but I only need logs that contain the IP address 10.249.185. or 10.247.231.
Here is the command I have, but it pulls all IP... (3 Replies)
Discussion started by: robertson1995
3 Replies
6. Shell Programming and Scripting
This isn't exactly a question. Just thought I'd share something I just wrote and found useful.
For those of you on modern linux boxen: you may be aware that there's a lovely little tool called notify-send that you can use to send notifications to the desktop. Any experienced shell-scripter could... (0 Replies)
Discussion started by: ryran
0 Replies
7. Shell Programming and Scripting
Hello,
How to tail -f multi logfile from multi path in 1 shell script.
File & Path
/usr/home/localmode/mode110l/log/logic/number110/digit110_digit110m4_2013050210.txt
/usr/home/localmode/mode103l/log/logic/number103/digit103_digit103m4_2013050210.txt... (4 Replies)
Discussion started by: ooilinlove
4 Replies
8. UNIX for Dummies Questions & Answers
hi guys,
I perform a sort of monitoring. I have a server running and with
tail -f | grep "Searchstring"I monitor the log-file for recent specific entries. This is ok and works fine.
Now, in addition I want to have my search results not posted into the shell but into a file. I tried:
tail... (3 Replies)
Discussion started by: LaUs3r
3 Replies
9. Shell Programming and Scripting
Good Morning,
i ran into some trouble this morning while 'improving' my monitoring stuff. i would like to get a warning when the number of mails sent (outbound) by postfix is above a certain number. so far, so easy. to test that i simply put
cat /var/log/mail.info | grep 'to=<' | grep -v -e... (1 Reply)
Discussion started by: Mike
1 Replies
10. UNIX for Beginners Questions & Answers
Hello,
I would like to write script to tail a file for different environment
But the number of lines are keep changing
How can I write a script
For example:
env could : A, B or C
and log files could be a.log, b.log and c.log
with the number of lines can change
say sometimes it 100 last... (9 Replies)
Discussion started by: encrypt_decrypt
9 Replies
LEARN ABOUT OPENSOLARIS
grablogs.conf
grablogs.conf(4) File Formats grablogs.conf(4)
NAME
grablogs.conf - grablogs configuration for libgrablogs.so of the plugins of
gnome-system-log file
SYNOPSIS
/usr/lib/gnome-system-log/plugins/grablogs.conf
DESCRIPTION
The libgrablogs.so is a plugin for gnome-system-log(1), it colloct the log files from the system as many as possible. grablogs.conf is a
configuration file that contains a set of lines mixed with sh(1) syntax codes and individual
log files. libgrablogs.so will read the file try to get a log files list for
gnome-system-log(1). Users can copy the file into $HOME/.gnome2/gnome-system-log/plugins/`uname -p` to overwrite the system default one.
The grablogs.conf file contains the following configuration categories:
[configs]
Each line under this category is interpreted as a config file of System. The plugin will open the config file and try to find
all system paths of the logs.
[commands]
Each line under this category is interpreted as a shell command and will be execute through a pipe. And each line of the out-
put of the command will be interpreted as a log path.
[logs] Each line under this category is interpreted as a log path.
FILES
/usr/lib/gnome-system-log/plugins/grablogs.conf
The system default configuration file for the plugin libgrablogs.so
$HOME/.gnome2/gnome-system-log/plugins/`uname -p`/grablogs.conf
The user specific configuration file for the plugin libgrablogs.so
EMAMPLE
[configs]
/etc/syslog.conf
[commands]
for i in `svcs -aH -o FMRI | grep -v lrc `; do svcprop -p restarter/logfile $i 2>/dev/null || svcprop -q -p restarter/alt_logfile $i
2>/dev/null ; done
[logs]
/var/log/messages
/var/log/secure
/var/log/maillog
/var/log/cron
/var/log/Xorg.0.log
/var/log/XFree86.0.log
/var/log/auth.log
/var/log/cups/error_log
SEE ALSO
gnome-system-log(1), pipelog.conf(1)
gnome-utils 2.16.0 13 Oct 2006 grablogs.conf(4)