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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 0x03f8
              mknod -m 660 /dev/ttyS1 c 4 65 # base address 0x02f8
              mknod -m 660 /dev/ttyS2 c 4 66 # base address 0x03e8
              mknod -m 660 /dev/ttyS3 c 4 67 # base address 0x02e8
              chown root:tty /dev/ttyS[0-3]

FILES

       /dev/ttyS[0-3]

SEE ALSO

       mknod(1), chown(1), getty(1), tty(4)