1.Dd May 15, 1994 2.Dt COMCONTROL 8 3.Os FreeBSD 4.Sh NAME 5.Nm comcontrol 6.Nd control an sio device. 7.Sh SYNOPSIS 8.Nm comcontrol 9.Ar sio_special_device 10.Op options 11.Sh DESCRIPTION 12.Nm Comcontrol 13is used to examine and modify some of the special characterstics 14of the specified sio device. 15If no arguments other than the device are specified, 16it prints the settings of all controllable characteristics. 17This usage requires only read access on the device. 18Only the superuser can change the settings. 19.Pp 20The following options are available: 21.Bl -tag -width Fl 22.It Cm dtrwait Ar number 23Set the time to wait after dropping DTR 24to the given number. 25The units are hundredths of a second. 26The default is 300 hundredths, i.e., 3 seconds. 27.El 28.Pp 29The standard way to use 30.Nm comcontrol 31is to put invocations of it in the 32.Ar /etc/rc.local 33startup script. 34.Sh SEE ALSO 35.Xr sio 4 36.Xr stty 1 . 37.Sh FILES 38.Bl -tag -width Pa 39.It Pa /dev/ttyd? 40dialin devices. 41.It Pa /dev/cua0? 42dialout devices. 43.Sh AUTHOR 44Christopher G. Demetriou 45.Sh BUGS 46.Nm comcontrol 47should be named 48.Nm siocontrol . 49. 50.Sh HISTORY 51Originally part of cgd's com package patches, version 0.2.1, to 386BSD 0.1. 52Once controlled bidirectional capabilities. Little is left to control now 53that these capabilities are standard. 54