Hello All
I am running redhat linux 7.2 and would like to know how i can block telnetting to a specified port .
say for example i would like to block telnet acesses to port 80.
regards
Xiamin (5 Replies)
Hello all...
I have a slight problem in my awk script...
I have a script which checks a csv file and keeps a count of any invalid records and then if it finds any, exits with a code of 1. problem is it dosnt seem to work properly :rolleyes: Everthing seem to work interms of the stats output,... (1 Reply)
Hi Everyone , have a great day
i have a file which has almost 20,000 blocks each starting with this particular line " rTCCreditControlRecord " , how can i bring out the 7172 block out of that file
Thanks in Anticipation (7 Replies)
Hi guys i am new to shell scripting. I wrote this script that simply searches a column value of file1 from file2.
please look at the code below:
awk '
FILENAME==ARGV { file_1_data=$0; next }
FILENAME==ARGV { file_2_data=substr($3,1,12); next }
END { ... (5 Replies)
Hi.
I have a list with files, and I would like to add a variable to the end of each line of each file in this list. The files are in a folder together with a large number of other files which I don't want to change.
My code is:
for file in 'cat ../list'
do
sed 's/$/\/R:_0/' $file >>... (4 Replies)
There are huge number of messages in syslog suggesting one of the client's IP is trying to telnet/ssh/pop/imap into the OSR5.0.7 system, it happens every minute or so, see a snippet below
Oct 9 13:11:20 myhost popper: (null) at 192.168.1.123 (192.168.1.123): -ERR POP EOF or I/O Error: 25... (3 Replies)
Hi :)
Yo quisiera saber si se puede definir procedimientos dentro del bloque END.
for example ...
BEGIN {i=1}
{
if ($1 == $2)
cadena = $3
}
END {
find_letter(cadena)
}
find_letter(cadena
{
...
} (3 Replies)
Hi,
I have a scenario where I want to display the output based on the pattern search between the start and end of a block in a file, we can have multiple start and end blocks in a file.
Example give below, we need to search between the start block abc and end block def in a file, after that... (5 Replies)
Hi,
I need to block ssh port 22 from all the servers except one server ip.
Until solaris11.3 and below, I used to do like below(under /etc/ipf/ipf.conf),and it's working fine
pass in quick from $server_ip to any port=22
block in quick from any to any port=22
But I tried almost same in... (1 Reply)
Discussion started by: Sumanthsv
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)