1TTYS(4)                    Linux Programmer's Manual                   TTYS(4)
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NAME

6       ttyS - serial terminal lines
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DESCRIPTION

9       ttyS[0-3] are character devices for the serial terminal lines.
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11       They are typically created by:
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13              mknod -m 660 /dev/ttyS0 c 4 64 # base address 0x3f8
14              mknod -m 660 /dev/ttyS1 c 4 65 # base address 0x2f8
15              mknod -m 660 /dev/ttyS2 c 4 66 # base address 0x3e8
16              mknod -m 660 /dev/ttyS3 c 4 67 # base address 0x2e8
17              chown root:tty /dev/ttyS[0-3]
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FILES

21       /dev/ttyS[0-3]
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SEE ALSO

24       chown(1), mknod(1), tty(4), mingetty(8), setserial(8)
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28Linux                             1992-12-19                           TTYS(4)