fconfigure - Set and get options on a channel
fconfigure channelId fconfigure channelId name fconfigure channelId name value ?name value ...?
TCL core command
The fconfigure command sets and retrieves options for channels.
http://www.tcl.tk/man/tcl8.5/TclCmd/fconfigure.htm
Instruct Tcl to always send output to stdout immediately, whether or not it is to a terminal:
fconfigure stdout -buffering none
An important use is
fconfigure $binaryDataFile -translation binary
to make sure the file is read as binary data.
LV 2008 Feb 28
Some of the wiki pages talk about the construct
fconfigure $serial_port -mode "$baudRate,$plex,$bits,$polarity"
or some such thing. The -mode flag, used for specifying baud rate, etc. has moved to open now. I don't know how one would change those values on an open descriptor...