10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi all,
i developed a script to measure the uptime of a process in a Solaris 10/11 environments.
All is well, but i came across a situation where there are multiple processes of the same name. Basically i have the following result file:
beVWARS 13357 19592122
beVWARS 14329 19591910... (4 Replies)
Discussion started by: nms
4 Replies
2. Shell Programming and Scripting
Here's my code:
awk -F '' 'NR==FNR {
if (/time/ && $5>10)
A=$2" "$3":"$4":"($5-01)
else if (/time/ && $5<01)
A=$2" "$3":"$4-01":"(59-$5)
else if (/time/ && $5<=10)
A=$2" "$3":"$4":0"($5-01)
else if (/close/) {
B=0
n1=n2;
... (2 Replies)
Discussion started by: klane
2 Replies
3. Shell Programming and Scripting
Hi,
I want to read file multiple times. Right now i am using while loop but that is not working.
ex.
While read line
do
while read line2
do
echo stmt1
#processing some data based on data.,
done < file2.txt
done < file1.txt # This will have 10... (4 Replies)
Discussion started by: tmalik79
4 Replies
4. Shell Programming and Scripting
Hello All,
Maybe I'm Missing something here but I have NOOO idea what the heck is going on with this....?
I have a Variable that contains a PATTERN of what I'm considering "Illegal Characters". So what I'm doing is looping
through a string containing some of these "Illegal Characters". Now... (5 Replies)
Discussion started by: mrm5102
5 Replies
5. Shell Programming and Scripting
Hi all,
i got 2 text file.
file.txt
value.txt
i want use C shell script to write out
while both of the file got different limit....how i going to write it in 1 while loop? (4 Replies)
Discussion started by: proghack
4 Replies
6. Shell Programming and Scripting
Hi all
Sorry for the basic question, but i am writing a shell script to get around a slightly flaky binary that ships with one of our servers. This particular utility randomly generates the correct information and could work first time or may work on the 12th or 100th attempt etc !.... (4 Replies)
Discussion started by: rethink
4 Replies
7. Shell Programming and Scripting
Hi Im running this script, which is supposed to find the max value build some tables and then stop running once all the tables are built. Thing is , it keeps assigning a null value to $h and then $g is null so it keep building tables i.e. testupdateNUL. How can I stop this? Here is what I have:
... (4 Replies)
Discussion started by: brandono66
4 Replies
8. Shell Programming and Scripting
I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends.
As an example I've written a script called question (The fist command is to show what is the contents of the... (2 Replies)
Discussion started by: DeCoTwc
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9. Shell Programming and Scripting
Sorry for such a dreadful title, but I'm not sure how to be more descriptive. I'm hoping some of the more gurutastic out there can take a look at a solution I came up with to a problem, and advice if there are better ways to have gone about it.
To make a long story short around 20K pieces of... (2 Replies)
Discussion started by: DeCoTwc
2 Replies
10. Shell Programming and Scripting
Dear all
How to write the shell script for the following statement:
(C programming)
for (i=0;i<30;i++) {
if i=1
continue *skip this number
(To do function here....)
...
}
similar statement in while loop....
I wrote the script in sh... (3 Replies)
Discussion started by: trynew
3 Replies
AnyEvent::Loop(3pm) User Contributed Perl Documentation AnyEvent::Loop(3pm)
NAME
AnyEvent::Loop - AnyEvent's Pure-Perl event loop
SYNOPSIS
use AnyEvent;
# use AnyEvent::Loop;
# this module gets loaded automatically when no other loop can be found
# Explicit use:
use AnyEvent::Loop;
use AnyEvent;
...
AnyEvent::Loop::run; # run the event loop
DESCRIPTION
This module provides an event loop for AnyEvent in case no other event loop could be found or loaded. You don't have to do anything to make
it work with AnyEvent except by possibly loading it before creating the first AnyEvent watcher.
This module is not some loop abstracion used by AnyEvent, but just another event loop like EV or Glib, just written in pure perl and
delivered with AnyEvent, so AnyEvent always works, even in the absence of any other backend.
If you want to use this module instead of autoloading a potentially better event loop you can simply load it (and no other event loops)
before creating the first watcher.
As for performance, this module is on par with (and usually faster than) most select/poll-based C event modules such as Event or Glib (it
does not even come close to EV, though), with respect to I/O watchers. Timers are handled less optimally, but for many common tasks, it is
still on par with event loops written in C.
This event loop has been optimised for the following use cases:
monotonic clock is available
This module will use the POSIX monotonic clock option (if it can be detected at runtime) or the POSIX "times" function (if the
resolution is at least 100Hz), in which case it will not suffer adversely from time jumps.
If no monotonic clock is available, this module will not attempt to correct for time jumps in any way.
The clock chosen will be reported if the environment variable $PERL_ANYEVENT_VERBOSE is set to 8 or higher.
any number of watchers on one fd
Supporting a large number of watchers per fd is purely a dirty benchmark optimisation not relevant in practise. The more common case of
having one watcher per fd/poll combo is special-cased, however, and therefore fast, too.
relatively few active fds per "select" call
This module expects that only a tiny amount of fds is active at any one time. This is relatively typical of larger servers (but not the
case where "select" traditionally is fast), at the expense of the "dense activity case" where most of the fds are active (which suits
"select").
The optimal implementation of the "dense" case is not much faster, though, so the module should behave very well in most cases, subject
to the bad scalability of "select" in the presence of a large number of inactive file descriptors.
lots of timer changes/iteration, or none at all
This module sorts the timer list using perl's "sort", even though a total ordering is not required for timers internally.
This sorting is expensive, but means sorting can be avoided unless the timer list has changed in a way that requires a new sort.
This means that adding lots of timers is very efficient, as well as not changing the timers. Advancing timers (e.g. recreating a
timeout watcher on activity) is also relatively efficient, for example, if you have a large number of timeout watchers that time out
after 10 seconds, then the timer list will be sorted only once every 10 seconds.
This should not have much of an impact unless you have hundreds or thousands of timers, though, or your timers have very small
timeouts.
FUNCTIONS
The only user-visible functions provided by this module loop related - watchers are created via the normal AnyEvent mechanisms.
AnyEvent::Loop::run
Run the event loop, usually the last thing done in the main program when you want to use the pure-perl backend.
AnyEvent::Loop::one_event
Blocks until at least one new event has been received by the operating system, whether or not it was AnyEvent-related.
SEE ALSO
AnyEvent.
AUTHOR
Marc Lehmann <schmorp@schmorp.de>
http://anyevent.schmorp.de
perl v5.14.2 2012-04-08 AnyEvent::Loop(3pm)