Hi all,
why "vi" acts differently is single user mode?
Does anyone help ?
I am using "x" to delete and it keeps messing up.
Please help
Thanks (2 Replies)
Hi all,
Well back at work and back to crashing systems again :-)
Does anyone know where I can find some decent information on single user mode? I need to be able to fix a few things. Don't know if it's possible in single user mode but I need to fix the "etc/vfstab" mainly I re-wrote it to... (2 Replies)
Hi All,
I have AIX 5.1 & I forgot the root password. I find out the solution is to boot in single-mode and remove the root password from the /etc/passwd file. My question is how to boot in single-mode? Also is there any password required when booting in this mode? (9 Replies)
Hi All,
I used to have my suse linux(VM) server in graphic mode but not anymore since morning. I cant rolback since i loose somuch work. Any idea how to it back to normal. Thanks (6 Replies)
:confused:
when i tried to look the status of DNS-client, it is in maintenance mode.....
Please tell me how to bring it back to online mode...PLEASE TELL ME STEP BY STEP.... PLEASE...
:wall: (2 Replies)
Hi all
I am new on sun OS. I have have little experience on linux.
The Story start from this point:
I want to put some script on start-up the terminal, but I cant do that. my shell was sh and I tried so much to find way to do that. at last someone said to me change your shell to bash. I ask how... (4 Replies)
Dear All
I am trying to install my os as :
ok>boot cdrom - install
but receiving the following :
"IDprom checksum error
getexecname() failed
/sbin/rcS /etc/vfstab cannot create
INIT:failed write utmpx enrty
INIT:single user mode
INIT:execle of /etc/sulogin failed
Enter run level"
Can you... (6 Replies)
is there a way for my C++ application to find out which mode the hpux OS is running in?
standard mode or trusted mode. (3 Replies)
Discussion started by: einsteinBrain
3 Replies
LEARN ABOUT DEBIAN
io::async::routine
IO::Async::Routine(3pm) User Contributed Perl Documentation IO::Async::Routine(3pm)NAME
"IO::Async::Routine" - execute code in an independent sub-process
SYNOPSIS
use IO::Async::Routine;
use IO::Async::Channel;
use IO::Async::Loop;
my $loop = IO::Async::Loop->new;
my $nums_ch = IO::Async::Channel->new;
my $ret_ch = IO::Async::Channel->new;
my $routine = IO::Async::Routine->new(
channels_in => [ $nums_ch ],
channels_out => [ $ret_ch ],
code => sub {
my @nums = @{ $nums_ch->recv };
my $ret = 0; $ret += $_ for @nums;
# Can only send references
$ret_ch->send( $ret );
},
on_finish => sub {
say "The routine aborted early - $_[-1]";
$loop->stop;
},
);
$loop->add( $routine );
$nums_ch->send( [ 10, 20, 30 ] );
$ret_ch->recv(
on_recv => sub {
my ( $ch, $totalref ) = @_;
say "The total of 10, 20, 30 is: $$totalref";
$loop->stop;
}
);
$loop->run;
DESCRIPTION
This subclass of IO::Async::Process contains a body of code and executes it in a sub-process, allowing it to act independently of the main
program. Once set up, all communication with the code happens by values passed into or out of the Routine via IO::Async::Channel objects.
Because the code running inside the Routine runs within its own process, it is isolated from the rest of the program, in terms of memory,
CPU time, and other resources, and perhaps most importantly in terms of control flow. The code contained within the Routine is free to make
blocking calls without stalling the rest of the program. This makes it useful for using existing code which has no option not to block
within an "IO::Async"-based program.
To create asynchronous wrappers of functions that return a value based only on their arguments, and do not generally maintain state within
the process it may be more convenient to use an IO::Async::Function instead, which uses an "IO::Async::Routine" to contain the body of the
function and manages the Channels itself.
PARAMETERS
The following named parameters may be passed to "new" or "configure":
channels_in => ARRAY of IO::Async::Channel
ARRAY reference of "IO::Async::Channel" objects to set up for passing values in to the Routine.
channels_out => ARRAY of IO::Async::Channel
ARRAY reference of "IO::Async::Channel" objects to set up for passing values out of the Routine.
code => CODE
CODE reference to the body of the Routine, to execute once the channels are set up.
METHODS
This class provides no additional methods, other than those provided by IO::Async::Process.
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::Routine(3pm)