maximum number of Unix98 pty's

maximum number of Unix98 pty's

[Carl]

Hi All,

Does anybody know how to find out what the limit of PTYs is when you don't have the source and config
that the kernel was compiled with. I'd rather not have to login x hundred times to find out when it falls over
as i have to do this a fair number of servers.

TIA
Carl
--

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Re: maximum number of Unix98 pty's

[pa3gcu]

On Thursday 15 May 2003 12:55, Carl wrote:
> Hi All,
>
> Does anybody know how to find out what the limit of PTYs is when you don't
> have the source and config that the kernel was compiled with. I'd rather
> not have to login x hundred times to find out when it falls over as i have
> to do this a fair number of servers.

Hope i am correct here. 

ls -al /dev/pty* | wc -l

List all pty's in your /dev directory and get 'wc' to tell you how many lines 
it contains, one line is one pty in this case.

On another note 256 is the standard (default) number of pty's in all kernels, 
UNLESS you choose to change it when configuring your custom kernel.

>
> TIA
> Carl
> --

-- 
Regards Richard
pa3gcu@zeelandnet.nl
http://people.zeelandnet.nl/pa3gcu/

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Re: maximum number of Unix98 pty's

[Heimo Claasen]

what ist "PTY" ?

-hc
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Re: maximum number of Unix98 pty's

[Eric]

On Wednesday 31 December 1969 06:00 pm, Heimo Claasen wrote:
> what ist "PTY" ?
>
> -hc

A pty is a psuedo-terminal. Linux creates these so you can log in and type 
things on your computer. If you press ctr+alt+<#> where # is 1-5 then you 
will see 5 pty's ready for login. Also SSH, telnet, and rlogin, and each 
xterm uses up one PTY. Normal linux kernels are configured to support 
256pty's and this is MORE than enough for desktop systems and small servers.
----------------------
Eric Bambach   
Eric@CISU.net 
----------------------
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