php 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
       chown(1), mknod(1), tty(4), agetty(8), mingetty(8), setserial(8)

COLOPHON
       This  page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

Linux								    1992-12-19								   TTYS(4)