is a sink; think of it as a "black hole", where you can dump what you don't want.
By doing 2> /dev/null, you are dumping the stderr.
The error message is sent to the sink.
The here-document (<<EOF construct) is used to create a name-less file.
is the same as
where file contains:
Hi,
Q1-What does
nroff -ms > /dev/null
Q2- What does mean -A under STAT column :
ps aux |head -20
UTIL PID %CPU %MEM SZ RSS TTY STAT STIME TIME COMMAND
root 516 93,0 0,0 12 12 - A 04 nov 3906:51 wait
Thank you. (4 Replies)
Hi, Anyone can help
My solaris 8 system has the following
/dev/null , /dev/tty and /dev/console
All permission are lrwxrwxrwx
Can this be change to a non-world write ??
any impact ?? (12 Replies)
Hi,
I am new into UNIX shell scripting and I am wondering what is the meaning of the below text which appears at the end of each line in the ".sh" file:
> /dev/null 2>&1
For example, the line below:
sh $HOME/stats/Rep777/Act_777.sh omc omc > /dev/null 2>&1
I know for sure what "sh... (10 Replies)
How are these two different? They both prevent output and error from being displayed. I don't see the use of the "&"
echo "hello" > /dev/null 2>&1
echo "hello" > /dev/null 2>1 (3 Replies)
I apologize if this question has been answered else where or is too elementary.
I ran across a KSH script (long unimportant story) that does this:
if ; then
CAS_SRC_LOG="/var/log/cas_src.log 2>&1"
else
CAS_SRC_LOG="/dev/null 2>&1"
fithen does this:
/usr/bin/echo "heartbeat:... (5 Replies)
Hello All and a Happy New year to yous guys.
I'm running the below command on my AIX box and it keeps giving me the message that the file doesn't exist. I know the file don't exist, but I don't want to see the error. 2>/dev/null doesn't work.
bash-3.00$ ls -l C* | wc -l 2>/dev/null
ls:... (2 Replies)
Friends have the following problem
a search may not find anything which would correct example:
ls -ltr *prueba.txt | nawk '{ print $9 }' > Procesar.dat 2>/dev/null
When he finds nothing gives me the following error
ls: prueba.txt: No such file or directory
because 2> / dev / null... (4 Replies)
Discussion started by: tricampeon81
4 Replies
LEARN ABOUT PHP
com_event_sink
COM_EVENT_SINK(3) 1 COM_EVENT_SINK(3)com_event_sink - Connect events from a COM object to a PHP objectSYNOPSIS
bool com_event_sink (variant $comobject, object $sinkobject, [mixed $sinkinterface])
DESCRIPTION
Instructs COM to sink events generated by $comobject into the PHP object $sinkobject.
Be careful how you use this feature; if you are doing something similar to the example below, then it doesn't really make sense to run it
in a web server context.
PARAMETERS
o $comobject
-
o $sinkobject
-$sinkobject should be an instance of a class with methods named after those of the desired dispinterface; you may use
com_print_typeinfo(3) to help generate a template class for this purpose.
o $sinkinterface
- PHP will attempt to use the default dispinterface type specified by the typelibrary associated with $comobject, but you may
override this choice by setting $sinkinterface to the name of the dispinterface that you want to use.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
COM event sink example
<?php
class IEEventSinker {
var $terminated = false;
function ProgressChange($progress, $progressmax) {
echo "Download progress: $progress / $progressmax
";
}
function DocumentComplete(&$dom, $url) {
echo "Document $url complete
";
}
function OnQuit() {
echo "Quit!
";
$this->terminated = true;
}
}
$ie = new COM("InternetExplorer.Application");
// note that you don't need the & for PHP 5!
$sink = new IEEventSinker();
com_event_sink($ie, $sink, "DWebBrowserEvents2");
$ie->Visible = true;
$ie->Navigate("http://www.example.org");
while(!$sink->terminated) {
com_message_pump(4000);
}
$ie = null;
?>
SEE ALSO com_print_typeinfo(3), com_message_pump(3).
PHP Documentation Group COM_EVENT_SINK(3)