flush man page on DigitalUNIX

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


       flush - Flush buffered output for a channel

       flush channelId

       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 chan‐
       nel 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.

       open(n), socket(n)

       blocking, buffer, channel, flush, nonblocking, output

Tcl				      7.5			      flush(n)

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