02-11-2009
I'm new user in unix.com
so I don't can answer now
8 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Multiple users at my work are connecting to a UNIX IMAP e-
mail server via Outlook 2003 that is creating a small
problem. Random new e-mails repeat themselves up to 3
times with an additional 10 hours added to them of when the original arrived.
i.e Original e-mail marked arrived at 10:00am... (2 Replies)
Discussion started by: arkady
2 Replies
2. UNIX for Dummies Questions & Answers
Hey,
As part of a Master's Degree program in Aeronautical Engineering I need a dedicated Unix PC to run a computational fluid dynamics (CFD) code in Fortran. Each run to model a single flow can take several days or weeks, so optimizing system resources is the only consideration. I need to buy... (1 Reply)
Discussion started by: John Bruzzese
1 Replies
3. UNIX for Dummies Questions & Answers
can someone please check my answers for the crontabs I am making
1. how would I set up a crontab tab executes every 2 minutes each and every day of the week?
answer: 2 * * * * /path/to/file.pl <-- is this correct?
2. how would I set up a crontab that executes every 24 hours at 2am?... (6 Replies)
Discussion started by: Bobafart
6 Replies
4. Shell Programming and Scripting
I need to write a script to find files older than 2 hours in set of direcotries and list them ina mail. I know find command ti list files greater/lesser than days but i need to do it for hours. Any input. (6 Replies)
Discussion started by: Presanna
6 Replies
5. Shell Programming and Scripting
Hi Frens,
I want to list some files from a directory, which contains "DONE" in their name, i am receiving files every minute. In this i want to list all the files which are newer than 6 hours but older than 3 hours, of current time
i dont want my list to contain the latest files which are ... (4 Replies)
Discussion started by: Prat007
4 Replies
6. Shell Programming and Scripting
Hi All,
I have a requirement which would calculate the Tuesday's date of the current week in yyyymmdd format in unix shell script.
Please help me out how could I do this .
I appreciate your help
Regards,
raj (7 Replies)
Discussion started by: rajeevm
7 Replies
7. Shell Programming and Scripting
I have unix epoch time 1441678454803, Can you please help me to print this time in below format ?
DAY,HOUR,MIN,SEC
Appreciate your help!!!
Thanks,
Prince (7 Replies)
Discussion started by: prince1987
7 Replies
8. What is on Your Mind?
Well, this was kinda fun and different:
You Want to Spend Time with Friends and Family a UNIX.com Cartoon Explainer
https://youtu.be/6jPDpuxI2OA
You want to spend time with friends and family.
But you are stuck on some problem...
Your Linux or Unix code is buggy and you don't know... (1 Reply)
Discussion started by: Neo
1 Replies
RRDp(3) User Contributed Perl Documentation RRDp(3)
NAME
RRDp - Attach RRDtool from within a perl script via a set of pipes;
SYNOPSIS
use RRDp
RRDp::start path to RRDtool executable
RRDp::cmd rrdtool commandline
$answer = RRD::read
$status = RRD::end
$RRDp::user, $RRDp::sys, $RRDp::real, $RRDp::error_mode, $RRDp::error
DESCRIPTION
With this module you can safely communicate with the RRDtool.
After every RRDp::cmd you have to issue an RRDp::read command to get RRDtools answer to your command. The answer is returned as a pointer,
in order to speed things up. If the last command did not return any data, RRDp::read will return an undefined variable.
If you import the PERFORMANCE variables into your namespace, you can access RRDtool's internal performance measurements.
use RRDp
Load the RRDp::pipe module.
RRDp::start path to RRDtool executable
start RRDtool. The argument must be the path to the RRDtool executable
RRDp::cmd rrdtool commandline
pass commands on to RRDtool. Check the RRDtool documentation for more info on the RRDtool commands.
Note: Due to design limitations, RRDp::cmd does not support the "graph -" command - use "graphv -" instead.
$answer = RRDp::read
read RRDtool's response to your command. Note that the $answer variable will only contain a pointer to the returned data. The
reason for this is, that RRDtool can potentially return quite excessive amounts of data and we don't want to copy this around in
memory. So when you want to access the contents of $answer you have to use $$answer which dereferences the variable.
$status = RRDp::end
terminates RRDtool and returns RRDtool's status ...
$RRDp::user, $RRDp::sys, $RRDp::real
these variables will contain totals of the user time, system time and real time as seen by RRDtool. User time is the time RRDtool
is running, System time is the time spend in system calls and real time is the total time RRDtool has been running.
The difference between user + system and real is the time spent waiting for things like the hard disk and new input from the Perl
script.
$RRDp::error_mode and $RRDp::error
If you set the variable $RRDp::error_mode to the value 'catch' before you run RRDp::read a potential ERROR message will not cause
the program to abort but will be returned in this variable. If no error occurs the variable will be empty.
$RRDp::error_mode = 'catch';
RRDp::cmd qw(info file.rrd);
print $RRDp::error if $RRDp::error;
EXAMPLE
use RRDp;
RRDp::start "/usr/local/bin/rrdtool";
RRDp::cmd qw(create demo.rrd --step 100
DS:in:GAUGE:100:U:U
RRA:AVERAGE:0.5:1:10);
$answer = RRDp::read;
print $$answer;
($usertime,$systemtime,$realtime) = ($RRDp::user,$RRDp::sys,$RRDp::real);
SEE ALSO
For more information on how to use RRDtool, check the manpages.
AUTHOR
Tobias Oetiker <tobi@oetiker.ch>
perl v5.16.3 2014-06-10 RRDp(3)