Jonathan Jefferies wrote:
> 
> Ricardo Denis wrote:
> >
> > hi all,
> >
> > what is the difference between a /dev/cua* device and a /dev/ttys* device? i
> > know the /dev/cua* are the serial ports (com1, com2) etc and from what i've
> > read they are supposed to be related somehow to the /dev/ttys* devices but i
> > am not clear on the differences. i ask because for an external modem that i
> > have connected on /dev/cua1, if i refer to it as /dev/cua1 i can comunicate
> > with it with a terminal program but, if i refer to it as /dev/ttys1 then the
> > terminal program cannot acces the modem. also, where can i find more info on
> > all the different devices in the /dev directory? thanks for any help.
> 
> I believe that the cua* device nomenclature is a historical artifact and
> that the latest versions of linux are going to ttys* for the
> serial devices.  But they are both serial devices.  Also I seem
> to remember the cua devices divided input from output, i.e. you wrote
> to one device and read from another.   Whereas the ttys devices are
> read/write combined.
> 
> I'm open to correction on this one.
> 
> Jonathan

ttyS* not ttys* . 'nix' is case sensitive. The original poster was
advised of this on this list; it was the solution to his problem.

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