06-12-2013
Cat/tac displays nothing but vi does
Hi,
Today i have seen a file which shows nothing when i use cat/tac.
But when i use vi it displays a single line at the top.
There are no other lines. I am curious why cat/tac doesn't display that line and only vi does?
Any thoughts?
Thanks in advance,
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LEARN ABOUT DEBIAN
authen::tacacsplus
TacacsPlus(3pm) User Contributed Perl Documentation TacacsPlus(3pm)
NAME
Authen::TacacsPlus - Perl extension for authentication using tacacs+ server
SYNOPSIS
use Authen::TacacsPlus;
$tac = new Authen::TacacsPlus(Host=>$server,
Key=>$key,
[Port=>'tacacs'],
[Timeout=>15]);
or
$tac = new Authen::TacacsPlus(
[ Host=>$server1, Key=>$key1, [Port=>'tacacs'], [Timeout=>15] ],
[ Host=>$server2, Key=>$key2, [Port=>'tacacs'], [Timeout=>15] ],
[ Host=>$server3, Key=>$key3, [Port=>'tacacs'], [Timeout=>15] ],
... );
$tac->authen($username,$passwords);
Authen::TacacsPlus::errmsg();
$tac->close();
DESCRIPTION
Authen::TacacsPlus allows you to authenticate using tacacs+ server.
$tac = new Authen::TacacsPlus(Host=>$server,
Key=>$key,
[Port=>'tacacs'],
[Timeout=>15]);
Opens new session with tacacs+ server on host $server, encrypted with key $key. Undefined object is returned if something wrong (check
errmsg()).
With a list of servers the order is relevant. It checks the availability of the Tacacs+ service using the order you defined.
Authen::TacacsPlus::errmsg();
Returns last error message.
$tac->authen($username,$password,$authen_type);
Tries an authentication with $username and $password. 1 is returned if authenticaton succeded and 0 if failed (check errmsg() for reason).
$authen_type is an optional argument that specifies what type of authentication to perform. Allowable options are:
Authen::TacacsPlus::TAC_PLUS_AUTHEN_TYPE_ASCII (default) Authen::TacacsPlus::TAC_PLUS_AUTHEN_TYPE_PAP
Authen::TacacsPlus::TAC_PLUS_AUTHEN_TYPE_CHAP
ASCII uses Tacacs+ version 0, and will authenticate against the "login" or "global" password on the Tacacs+ server. If no authen_type is
specified, it defaults to this type of authentication.
PAP uses Tacacs+ version 1, and will authenticate against the "pap" or "global" password on the Tacacs+ server.
CHAP uses Tacacs+ version 1, and will authenticate against the "chap" or "global" password on the Tacacs+ server. With CHAP, the password
if formed by the concatenation of
chap id + chap challenge + chap response
There is example code in test.pl
If you use a list of servers you can continue using $tac->authen if one of them goes down or become unreachable.
$tac->close();
Closes session with tacacs+ server.
EXAMPLE
use Authen::TacacsPlus;
$tac = new Authen::TacacsPlus(Host=>'foo.bar.ru',Key=>'9999');
unless ($tac){
print "Error: ",Authen::TacacsPlus::errmsg(),"
";
exit(1);
}
if ($tac->authen('john','johnpass')){
print "Granted
";
} else {
print "Denied: ",Authen::TacacsPlus::errmsg(),"
";
}
$tac->close();
AUTHOR
Mike Shoyher, msh@corbina.net, msh@apache.lexa.ru
Mike McCauley, mikem@open.com.au
BUGS
only authentication is supported
only one session may be active (you have to close one session before opening another one)
SEE ALSO
perl(1).
perl v5.14.2 2012-01-17 TacacsPlus(3pm)