10-04-2001
Well....
Perhaps my use of the term 'tty' was inappropriate.
Our application is a Warehouse management system that uses a large network of wireless PC's running terminal emulators. Each wireless PC (natch) has an IP address. It would be nice to be able to capture this information for logging / debugging purposes. We are maintaining an error log table in Oracle, and we would like the client app to be able to include the IP in error messages in this table.
We
can discover the IP addresses of these sessions from a host command line as follows:
who -uH am i
...and examining the "COMMENTS" column. Hence we DO know that the HPUX server has access to this information, and that the 'who' command can retrieve it. If only I had the source code for 'who' ....
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LEARN ABOUT OPENDARWIN
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)