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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)
Linux 1992-12-19 TTYS(4)