06-20-2008
Sendmail not running? Good question. I would assume it gets queued until sendmail is running again, but isn't queing it a function of sendmail? Bottom line: I don't have an answer.
Good practice? Personally, I'd say no. You may want to divert the STANDARD output to /dev/null but errors too? That really depends upon the application.
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Maybe it's an stupid question but remeber... I'm Junior..
I use command line to run programs, and some of them gives a lot of information when, for example, you open a window or other actions. That's really bad because my terminal gets full of unwanted messages, so I use "bin file & >/dev/null"... (1 Reply)
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Hi ,
I am importing some table from /dev/null i dont understand what is /dev/null
Sorry i am new to UNIX
sam71 (3 Replies)
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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
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hello all,
In many shell scripts i found '> /dev/null' , i am not able to get this,
will any one please explain why we are using this.
thanks
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Hi, Anyone can help
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when do you use the path /dev/null (3 Replies)
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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
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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
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fithen does this:
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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.
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Friends have the following problem
a search may not find anything which would correct example:
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LEARN ABOUT DEBIAN
log::handler::output::sendmail
Log::Handler::Output::Sendmail(3pm) User Contributed Perl Documentation Log::Handler::Output::Sendmail(3pm)
NAME
Log::Handler::Output::Sendmail - Log messages with sendmail.
SYNOPSIS
use Log::Handler::Output::Sendmail;
my $email = Log::Handler::Output::Sendmail->new(
from => 'bar@foo.example',
to => 'foo@bar.example',
subject => 'your subject',
);
$email->log(message => $message);
DESCRIPTION
With this output module it's possible to log messages via "sendmail".
METHODS
new()
Call "new()" to create a new Log::Handler::Output::Sendmail object.
The following options are possible:
from
The sender address (From).
to The receipient address (To).
cc Carbon Copy (Cc).
bcc Blind Carbon Copy (Bcc)
subject
The subject of the mail.
sender
This option is identical with "sendmail -f".
header
With this options it's possible to set your own header.
my $email = Log::Handler::Output::Sendmail->new(
from => 'bar@foo.example',
to => 'foo@bar.example',
header => 'Content-Type: text/plain; charset= UTF-8',
);
Or
my $email = Log::Handler::Output::Sendmail->new(
header => {
From => 'bar@foo.example',
To => 'foo@bar.example',
Subject => 'my subject',
'Content-Type' => text/plain; charset= UTF-8',
}
);
Or
my $email = Log::Handler::Output::Sendmail->new(
header => [
'From: bar@foo.example',
'To: foo@bar.example',
'Subject: my subject',
'Content-Type: text/plain; charset= UTF-8',
]
);
sendmail
The default is set to "/usr/sbin/sendmail".
params
Parameters for "sendmail".
The default is set to "-t".
maxsize
Set the maximum size of the buffer in bytes.
All messages will be buffered and if "maxsize" is exceeded the buffer is flushed and the messages will be send as email.
The default is set to 1048576 bytes.
Set 0 if you want no buffering and send a mail for each log message.
debug
Set 1 if you want to enable debugging.
The messages can be fetched with $SIG{__WARN__}.
log()
Call "log()" if you want to log a message as email.
$email->log(message => "this message will be mailed");
If you pass the level then its placed into the subject:
$email->log(message => "foo", level => "INFO");
$email->log(message => "bar", level => "ERROR");
$email->log(message => "baz", level => "DEBUG");
The lowest level is used:
Subject: ERROR ...
You can pass the level with "Log::Handler" by setting
message_pattern => '%L'
flush()
Call "flush()" if you want to flush the buffered messages.
validate()
Validate a configuration.
reload()
Reload with a new configuration.
errstr()
This function returns the last error message.
DESTROY
"DESTROY" is defined and called "flush()".
PREREQUISITES
Carp
Params::Validate
EXPORTS
No exports.
REPORT BUGS
Please report all bugs to <jschulz.cpan(at)bloonix.de>.
If you send me a mail then add Log::Handler into the subject.
AUTHOR
Jonny Schulz <jschulz.cpan(at)bloonix.de>.
COPYRIGHT
Copyright (C) 2007-2009 by Jonny Schulz. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.14.2 2012-11-21 Log::Handler::Output::Sendmail(3pm)