Im getting stumped on one of my unix problems. Im a college student taking unix and for one of my assignments I am to write a few programs. I done the programs but on one of them I have to modify it by using sed instead of a while do loop. here's the while loop
while
do
... (2 Replies)
Situation:
I've logged in as ordinary_user1;
I can su to common_dev_user;
When I su to common_dev_user, I'm taken to the HOME dir of common_dev_user;
Everytime I need to cd to a particular folder from here (say like cd /developers/ordinary_user1/code/)
This is a repetitive task (su ing and... (3 Replies)
Receiving the above error from an application. I narrowed it down to a problem with rsh. If the rsh command is issued too rapidly it fails intermittently.
Try this script on your linux box...
#!/bin/sh -f
for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
do
echo $i
rsh... (1 Reply)
My problem is I need to control a 7 segment LED circuit (currently on a breadboard, eventually on a PCB). The only option I have from my PC is through USB. The circuit I have built on a breadboard uses 7 segment LED's and 4206 decade counters. I have cut a USB cable in half, and am using the... (2 Replies)
Hi all.
In some articles I have read about a "UNIX Circuit Design System", which was written originally in some version of
Research UNIX by Sandy Fraser.
Here is a quote from the article "A Research UNIX Reader: Annotated Excerpts from the Programmer's Manual", by Douglas McIlroy:
Even... (1 Reply)
Hi. i am new to Linux. i have a Turbo-cad and circuit wizard programme on CD that I want to install and run. I keep getting the message I do not have an auto-run programme. Do I need to install specific drivers for this? What programme do I need? (1 Reply)
Discussion started by: Alfred Kruger
1 Replies
LEARN ABOUT DEBIAN
io::async::signal
IO::Async::Signal(3pm) User Contributed Perl Documentation IO::Async::Signal(3pm)NAME
"IO::Async::Signal" - event callback on receipt of a POSIX signal
SYNOPSIS
use IO::Async::Signal;
use IO::Async::Loop;
my $loop = IO::Async::Loop->new;
my $signal = IO::Async::Signal->new(
name => "HUP",
on_receipt => sub {
print "I caught SIGHUP
";
},
);
$loop->add( $signal );
$loop->run;
DESCRIPTION
This subclass of IO::Async::Notifier invokes its callback when a particular POSIX signal is received.
Multiple objects can be added to a "Loop" that all watch for the same signal. The callback functions will all be invoked, in no particular
order.
EVENTS
The following events are invoked, either using subclass methods or CODE references in parameters:
on_receipt
Invoked when the signal is received.
PARAMETERS
The following named parameters may be passed to "new" or "configure":
name => STRING
The name of the signal to watch. This should be a bare name like "TERM". Can only be given at construction time.
on_receipt => CODE
CODE reference for the "on_receipt" event.
Once constructed, the "Signal" will need to be added to the "Loop" before it will work.
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::Signal(3pm)