flush

flush(n)                     Tcl Built-In Commands                    flush(n)



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NAME
       flush - Flush buffered output for a channel

SYNOPSIS
       flush channelId
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DESCRIPTION
       Flushes any output that has been buffered for channelId.  ChannelId
       must be a channel identifier such as returned by a previous open or
       socket command, and it 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.


SEE ALSO
       open(n), socket(n)


KEYWORDS
       blocking, buffer, channel, flush, nonblocking, output



Tcl                                   7.5                             flush(n)