using tail -f and tr in a script Post: 302439274

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

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...

2. Shell Programming and Scripting

How do I get my script to monitor a new file using tail?

Hi, I have a script which basically watches a log file for new lines using tail, then takes action based on what is logged. I wrote a script to do this for me and its working great, my only problem is that once per week, this log file is archived to another directory, and a new log is created....

3. Shell Programming and Scripting

How to tail log in one script?

I have three prodcution box Prod1 Prod2 Prod3 I want to write a script which tail the log for each production box and put it into some file which I have want to tail For example Prod1 ----- TIMER IXN=MEMPUT, USR=GGu1, elapsed = 0.176 seconds. 11:41:44 AUDIT MEMPUT: member...

4. Shell Programming and Scripting

tail script gone wrong

Hi guys... What am I doing wrong? #!/bin/sh LINES=1 FILE=test.log TAIL="/usr/bin/tail -n" $TAIL -${LINES} ${FILE} Error: ./tail.sh usage: tail ] tail ] ---------- Post updated at 08:41 AM ---------- Previous update was at 08:32 AM ---------- please ignore this...

5. Shell Programming and Scripting

Doing a tail in a script and then return back and continue script

Hello all, I am trying to do a tail in a script. But when I quit the tail my script quits also. This is not what I want. I am struggling to get this done. #!/bin/bash askFile() { echo -n "Enter file: " read FILE } doTail() { tail -F "${1}" } askFile doTail...

6. Shell Programming and Scripting

bash script to display tail

Hi everyone, I'm trying to write a script to format a file using unix2dos. I want to output all but the first 14 lines in a file. Then I want to pipe this to unix2dos to convert the output to a file that's easily readable on windows. Here's what I have: export Lines=`wc -l < $1` export...

7. Shell Programming and Scripting

script to kill tail processes

my unix machine is currently shared by many teams, because of that lots of processess are running and bad part is taht when I do psu ...i can see all tail processes as well , meaning ppl who have viewed files with tail and have forgotten to close it. command prompt >> psu tail -n 0 -f...

8. Shell Programming and Scripting

Help On tail script

Hi Guys, I would like to create a script which tails the content of a log file in real time, looks for a specific string , like "ERROR" and captures in a text file the previous 10.000 lines that were existing before this string. Any help is appreciated.

9. Shell Programming and Scripting

Joining multiple files tail on tail

I have 250 files that have 16 columns each - all numbered as follows stat.1000, stat.1001, stat.1002, stat.1003....stat.1250. I would like to join all 250 of them together tail by tail as follows. For example stat.1000 a b c d e f stat.1001 g h i j k l So that my output...

10. Shell Programming and Scripting

How to end tail -f from the script?

Hi, i have a script tail -f logs| grep item i need to end the script once it finds item in the logs folder, this happens on run time.

LEARN ABOUT DEBIAN

logtop

LOGTOP(1)						      General Commands Manual							 LOGTOP(1)

NAME

       logtop - Realtime log line rate analyser

SYNOPSIS

       logtop [OPTIONS]

DESCRIPTION

	logtop is a System Administrator tool analyzing line rate on stdin.
	It reads on stdin and print a constantly updated result
	displaying, in columns:
	Line number, count, frequency, and the actual line.

	 $ tail -f FILE | logtop
	is the friendly version of:
	 $ watch 'tail FILE | sort | uniq -c | sort -gr'

OPTIONS

       -s, --size=K
	      Only keep K lines in memory, instead of 10000.

       -q, --quiet
	      Do not display a live view of the data, only display a top at exit.

       -l, --line-by-line=K
	      Print result line by line, in a machine friendly format, K is the number of result to print per line.

		Line by line format is : [%d %f %s	]*

		  %d : Number of occurences
		  %f : Frequency of apparition
		  %s : String (Control chars replaced by dots.

       -i, --interval=K
	      Interval between graphical updates, in seconds. Defaults to 1.

       -h, --help
	      Show summary of options.

       -v, --version
	      Show version of program.

EXAMPLES

       Here are some logtop usage examples.

       tail -f cache.log | grep -o "HIT|MISS" | logtop

       Realtime hit / miss ratio on some caching software log file.

       tail -f access.log | cut -d' ' -f1 | logtop -s 10000

       Realtime most querying IPs on your server, as long as log lines in access.log starts with the client IP.

       tail -f access.log | cut -d' ' -f7 | logtop -s 10000

       Realtime most requested web pages in a NCSA like log file.

       cat auth.log | grep -v "CRON" | grep -o ": .*" | logtop -q -s 100000

       Display a one-shot simple analyse of your auth.log.

SEE ALSO

       watch(1)

AUTHOR

       logtop was written by Julien Palard.

       This manual page was written by Julien Palard <julien@palard.fr>, for the Debian project (and may be used by others).

								  April 16, 2011							 LOGTOP(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Grep or Tail in shell script

Discussion started by: Moxy

2. Shell Programming and Scripting

How do I get my script to monitor a new file using tail?

Discussion started by: lstorm2003

3. Shell Programming and Scripting

How to tail log in one script?

Discussion started by: mr_harish80

4. Shell Programming and Scripting

tail script gone wrong

Discussion started by: jazzaddict