Thanx. that's a start. sysctl -a | grep pty: kernel.pty.nr = 13 kernel.pty.max = 4096 So I should have enough as a maximum. I am not a sure what the pty.nr means (possibly next available number??). The crux of my problem is the database frontend has a table of terminal definitions which I have defined as /dev/pts/0....50. Now from what you have said (and I have seen it in action now) the only way to create files in /dev/pts/ is to ssh into the system. However the database frontend is a java-terminal that operates out of a browser window. I don't think it knows how to open a pty. I have tried to use mknod to create devices and I get operation not permitted. So I am a bit stuck at the moment. Thanx for the help though. Dp. On 6 Jan 2006 at 17:22, Carl wrote: > At 16:27 06/01/2006, Dermot Paikkos wrote: > >Hi, > > > >I have been trying to working out how to create additional pseudo- > >terminal devices in pts. Currently there are 9 device file in > >/dev/pts numbered between 1 - 12. > > > >I need to ensure that I can have about 40 users attach to the system > >using xterminals. I have tried MAKEDEV but nothing happens. The man > >pages for pts doesn't say how to make any new devices, only that a > >pty are opened when a process opens /dev/ptmx. > > > > > >Does anyone know who I can create new character files in /dev/pts? > > I'm not authorative on this subject but here goes. > > They will be created automatically for you. Hence why you have > missing numbers in your current sequence. > As someone logs out the pts is destroyed. > > The limit is a kernel parameter. Most distros i have seen had the > limit set to 256. > > Older kernels require a change to the kernel config and recompile, > newer kernels should be controllable with sysctl. > > Try "sysctl -a | grep pty" and see what you get. Not sure if this is > correct but might be. > > Try googling for "pseudo tty" and look at the kernel docos. > > -- > Carl > > > > > - > : send the line "unsubscribe linux-admin" > in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo > info at http://vger.kernel.org/majordomo-info.html > - : send the line "unsubscribe linux-admin" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
