redhat man page for ttys

TTYS(4) 						     Linux Programmer's Manual							   TTYS(4)

NAME
       ttyS - serial terminal lines

DESCRIPTION
       ttyS[0-3] are character devices for the serial terminal lines.

       They are typically created by:

	      mknod -m 660 /dev/ttyS0 c 4 64 # base address 0x3f8
	      mknod -m 660 /dev/ttyS1 c 4 65 # base address 0x2f8
	      mknod -m 660 /dev/ttyS2 c 4 66 # base address 0x3e8
	      mknod -m 660 /dev/ttyS3 c 4 67 # base address 0x2e8
	      chown root:tty /dev/ttyS[0-3]

FILES
       /dev/ttyS[0-3]

SEE ALSO
       mknod(1), chown(1), getty(1), tty(4), setserial(8)

Linux								    1992-12-19								   TTYS(4)