Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Break out of tail -f
Top Forums Shell Programming and Scripting Break out of tail -f Post 302779299 by sai2013 on Tuesday 12th of March 2013 12:47:45 PM
Old 03-12-2013
Pickett, I tried the below code. The logs just hung at a point, maybe before reaching the line, '$SERVER_STATUS'


Code:
 
seek=0
while :
do
sz=`ls -l nohup.out | sed '
s/^[^ ][^ ]* *[^ ][^ ]* *[^ ][^ ]* *[^ ][^ ]* *\([^ ][^ ]*\) .*/\1/
'`
if (( sz == seek ))
then
sleep 1
continue
fi
tail -${seek}c nohup.out | sed -n '
/$SERVER_STATUS'/w nohup.out
'
seek=$sz
done

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

using tail -f

Working in HP-UX 10.20. I eventually want to write a bourne shell script to handle the following problem, but for now I am just toying with it at the command line. Here's what I am basically trying to do: tail -f log_X | grep n > log_Y I am doing a tail -f on log_X . Once it sees "n", I... (6 Replies)
Discussion started by: cdunavent
6 Replies

2. Shell Programming and Scripting

Tail??

Hello all, I have search the forum and could not find an answer...Here is what I am trying to do. Every 15 minutes, a script send uptime output to a logfile (dailylog.log), that file contains lines like the one below: 11:21am up 44 days, 19:15, 1 user, load average: 0.00, 0.02, 0.03 ... (7 Replies)
Discussion started by: qfwfq
7 Replies

3. Shell Programming and Scripting

tail -f

I am trying to extract a particular line from a.log which keeps appending every sec and output that into a newfile b.log which should append itself with filtered data received from a.log I tried tail -f a.log |grep fail| tee -a b.log nothing in b.log tail -f a.log |grep fail >>b.log ... (4 Replies)
Discussion started by: wannalearn
4 Replies

4. HP-UX

Break mirror so that it can be used later

Hello again, We need to install patches to HP-UX B.11.11 but would like to break the mirror it has (with out damaging it) so that in case of failure we can use this a meassure procedure. Any ideas on how to do this Thank you! (2 Replies)
Discussion started by: AQG
2 Replies

5. Shell Programming and Scripting

break out of 'if'

is it possible? because i still need to keep on reading even though i don't want to read that particular line (7 Replies)
Discussion started by: finalight
7 Replies

6. Shell Programming and Scripting

help on page break

Hi, i have a file say samp.s which has 123 a b c d 123 e f g h 123 i j k l 123 m n o p 234 a b c d 234 e f g h 234 i j k l the first 3 characters in each line are considered the key values i have one more file temp.txt which has 123 234 i want to have a page break in... (5 Replies)
Discussion started by: Sheema
5 Replies

7. Shell Programming and Scripting

break: cannot break

hi guys I am working on a menu for linux... some basic stuff. but I have an issue. I got 1 server where something is working and the same thing does not work in the same way in another linux box Basically I am simulating a command line where user insert some commands and to end and go back... (7 Replies)
Discussion started by: karlochacon
7 Replies

8. Shell Programming and Scripting

BASH: Break line, read, break again, read again...

...when the lines use both a colon and commas to separate the parts you want read as information. The first version of this script used cut and other non-Bash-builtins, frequently, which made it nice and zippy with little more than average processor load in GNOME Terminal but, predictably, slow... (2 Replies)
Discussion started by: SilversleevesX
2 Replies

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... (2 Replies)
Discussion started by: kayak
2 Replies

10. Shell Programming and Scripting

Tail +

because the tail +2 on the first line gives me the file name pomga I do not want anything like what I miss tail +2 ejemplo.txt ouput ==> ejemplo.txt <== 1 2 3 4 5 6 7 8 9 10 (2 Replies)
Discussion started by: tricampeon81
2 Replies

LEARN ABOUT MOJAVE

ppi::statement::break5.18

PPI::Statement::Break(3)				User Contributed Perl Documentation				  PPI::Statement::Break(3)

NAME

       PPI::Statement::Break - Statements which break out of normal statement flow

SYNOPSIS

	 last;
	 goto FOO;
	 next if condition();
	 return $foo;
	 redo;

INHERITANCE

	 PPI::Statement::Break
	 isa PPI::Statement
	     isa PPI::Node
		 isa PPI::Element

DESCRIPTION

       "PPI::Statement::Break" is intended to represent statements that break out of the normal statement flow control. This covers the basic
       types 'redo', 'goto', 'next', 'last' and 'return'.

METHODS

       "PPI::Statement::Break" has no additional methods beyond the default ones provided by PPI::Statement, PPI::Node and PPI::Element.

       However, it is expected to gain methods for identifying the line to break to, or the structure to break out of.

TO DO

       - Add the methods to identify the break target

       - Add some proper unit testing

SUPPORT

       See the support section in the main module.

AUTHOR

       Adam Kennedy <adamk@cpan.org>

COPYRIGHT

       Copyright 2001 - 2011 Adam Kennedy.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

       The full text of the license can be found in the LICENSE file included with this module.

perl v5.18.2							    2011-02-25						  PPI::Statement::Break(3)
All times are GMT -4. The time now is 04:45 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy