flush - Flush buffered output for a channel
Flushes any output that has been buffered for channelId
must be an identifier for an open channel such as a Tcl
standard channel ( stdout
), the return value from an
invocation of open
, or the result of a channel
creation command provided by a Tcl extension. The channel must have been
opened for writing.
If the channel is in blocking mode the command does not return until all the
buffered output has been flushed to the channel. If the channel is in
nonblocking mode, the command may return before all buffered output has been
flushed; the remainder will be flushed in the background as fast as the
underlying file or device is able to absorb it.
Prompt for the user to type some information in on the console:
puts -nonewline "Please type your name: "
gets stdin name
puts "Hello there, $name!"
file(n), open(n), socket(n), Tcl_StandardChannels(3)
blocking, buffer, channel, flush, nonblocking, output