ttyS1

Nefarious · 15 Jan 2007 at 09:03

I have connected to a serial device over cu but it has become unresponsive

How do I stop the use of ttyS1 without rebooting the computer?

Many thanks

Dj_Jestar · 15 Jan 2007 at 09:33

In what way do you mean "stop the use"? You mean unplug?

IIRC serials are hardlinked - i.e. ttys1 will always be serial port1 and so on. Serials are also 'hardlinked' in the sense that they can only be cold plugged.

Nefarious · 15 Jan 2007 at 09:38

Indeed but if the system see a piece of software as accessing the port it will 'lock' it.

The software in question crashed and I need to remove the locking without restarting

Nefarious · 15 Jan 2007 at 09:40

Actually my post actually jogged me into realising how to do it myself.

I don't know if there's a slicker way of doing it but I was able to remove the lock by simply deleting the lock file from /var/lock

Makes me seemlike a bit of a fool not to realise before really...

Nefarious · 15 Jan 2007 at 09:52

Does anyone know how I'd be able to set the port so that root has access?

For some reason it is standardly set so that root can not access it. I have done it previously but my brain seems to be failing

Dj_Jestar · 15 Jan 2007 at 10:49

are you using Getty?

/etc/securetty

contains the devices root has access to.