11-13-2007
"sed" to check file size & echo " " to destination file
Hi,
I've modified the syslogd source to include a thread that will keep track of a timer(or a timer thread). My intention is to check the file size of /var/log/messages in every one minute & if the size is more than 128KB, do a echo " " > /var/log/messages, so that the file size will be set back to zero.
If somebody can help me with a sed command to check the size of messages & to do a echo "" > messages ,if the size is greater than 128KB, I'll really grateful.
Wishes
Jay
Last edited by jockey007; 11-13-2007 at 03:47 PM..
Reason: typo
10 More Discussions You Might Find Interesting
1. HP-UX
Hi,
I am a Unix Admin. I have to give the permissions to a user for creating new file in a directory in HP-Ux 11.11 system since he cannot able to create a new file in the directory.
Thanks in advance.
Mike (3 Replies)
Discussion started by: Mike1234
3 Replies
2. Shell Programming and Scripting
hi All,
cat file_name | awk /^~/'{print $1","$2","$3","$4}' | sed -e 's/~//g'
Can this be done by using sed or awk alone (4 Replies)
Discussion started by: harshakusam
4 Replies
3. Shell Programming and Scripting
Hi experts
I want your help to change the file format to my wanted version, please give me a hand thanks
$cat file
install pass
make os pass
make build kernel failed
usb storage pass
chane to
| *install* | *make os* | *make build kernel* | *usb storage* |
| pass | pass... (7 Replies)
Discussion started by: yanglei_fage
7 Replies
4. Shell Programming and Scripting
Hi,
I have line in input file as below:
3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
My expected output for line in the file must be :
"1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL"
Can someone... (7 Replies)
Discussion started by: shis100
7 Replies
5. Shell Programming and Scripting
logs:
"/home/abc/public_html/index.php"
"/home/abc/public_html/index.php"
"/home/xyz/public_html/index.php"
"/home/xyz/public_html/index.php"
"/home/xyz/public_html/index.php"
how to use "cut" or "awk" or "sed" to get the following result:
abc
abc
xyz
xyz
xyz (8 Replies)
Discussion started by: timmywong
8 Replies
6. SuSE
mail:/var/lib/named/proc # ls -l |grep kcore
-r-------- 1 root root 140737486266368 Jun 3 19:47 kcore
mail:/var/lib/named/proc # du -a |grep kcore
0 ./kcore
System is SuSE 11.2 SP1.
The system appears to run correctly, and the output of df -v shows the correct disk... (1 Reply)
Discussion started by: jgt
1 Replies
7. Shell Programming and Scripting
Hi all.
I have a .txt file that I need to sort it
My file is like:
1- 88 chain0 MASTER (FF-TE) FFFF 1962510 /TCK T FD2TQHVTT1 /jtagc/jtag_instreg/updateinstr_reg_1 dff1 (TI,SO)
2- ... (10 Replies)
Discussion started by: Behrouzx77
10 Replies
8. UNIX for Dummies Questions & Answers
How to use "mailx" command to do e-mail reading the input file containing email address, where column 1 has name and column 2 containing “To” e-mail address
and column 3 contains “cc” e-mail address to include with same email.
Sample input file, email.txt
Below is an sample code where... (2 Replies)
Discussion started by: asjaiswal
2 Replies
9. Shell Programming and Scripting
Hello.
System : opensuse leap 42.3
I have a bash script that build a text file.
I would like the last command doing :
print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt
where :
print_cmd ::= some printing... (1 Reply)
Discussion started by: jcdole
1 Replies
10. AIX
Hi 2 all,
i have had AIX 7.2
:/# /usr/IBMAHS/bin/apachectl -v
Server version: Apache/2.4.12 (Unix)
Server built: May 25 2015 04:58:27
:/#:/# /usr/IBMAHS/bin/apachectl -M
Loaded Modules:
core_module (static)
so_module (static)
http_module (static)
mpm_worker_module (static)
... (3 Replies)
Discussion started by: penchev
3 Replies
LEARN ABOUT DEBIAN
sdl::time
pods::SDL::Time(3pm) User Contributed Perl Documentation pods::SDL::Time(3pm)
NAME
SDL::Time - An SDL Perl extension for managing timers
CATEGORY
Core
SYNOPSIS
use warnings;
use strict;
use threads;
use threads::shared;
use SDL::Time;
package foo;
use SDL ':all';
SDL::init(SDL_INIT_TIMER);
my $tick :shared = 0;
sub ticker { $tick++; warn $tick; return 100; }
package main;
my $id = SDL::Time::add_timer(100, 'foo::ticker');
sleep(2);
SDL::Time::remove_timer($id);
METHODS
add_timer
my $id = SDL::Timer::add_timer( $ms_interval, $callback );
This runs in a separate thread and a cloned Perl thread. "threads" and "threads::shared" must be used to share any variables the timer
uses.
The $callback function, specified with a string of the function's name, will be called after the milliseconds of $interval have elapsed.
The actual delay may be longer than specified depending on the underlying OS. The callback function is passed the current timer interval
as well as the $interval parameter and should return the next timer interval. If the return value from the callback is 0, the timer is
cancelled; otherwise, the timer will continue to run.
The timer callback function may run in a different thread to your main program, so it shouldn't call any functions from within itself. You
may call SDL::push_event, however.
"SDL::Time::add_timer" returns the identifier value of the generated timer or undef on error.
Note: You must initialize ("SDL::init") the timer subsystem to use this function.
remove_timer
SDL::Timer::remove_timer( $id );
The other way to cancel a timer is to use "SDL::Time::remove_timer" on the $id of a timer. This ID is the return value of the
"SDL::Time::add_timer" function.
"SDL::Time::remove_timer" returns 0 on success or "-1" on error.
AUTHORS
See "AUTHORS" in SDL.
perl v5.14.2 2012-05-28 pods::SDL::Time(3pm)