The following list contains important notes.
All single quotes in these directions are back quotes, not forward quotes, except where specifically noted.
Be sure to execute these commands as root, from a Bourne shell (sh), not ksh, tcsh, or csh. (If you use a Bourne shell script, that's good.)
If, after following these instructions, you get modem failures, or if the add_modem script gives an error message about ttyadm: -V: invalid parameter, then make sure that root's default shell is /sbin/sh and not csh.
You want to have a maximum of one port monitor running on a given port. If you accidentally have two or more running on the port, your machine will probably panic.
There is much disagreement over whether ...