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man pages section 1: User Commands

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Updated: Thursday, June 13, 2019
 
 

flush (1t)

Name

flush - Flush buffered output for a channel

Synopsis

flush channelId

Description

flush(1t)                    Tcl Built-In Commands                   flush(1t)



______________________________________________________________________________

NAME
       flush - Flush buffered output for a channel

SYNOPSIS
       flush channelId
______________________________________________________________________________

DESCRIPTION
       Flushes any output that has been buffered for channelId.

       ChannelId must be an identifier for an open channel such as a Tcl stan-
       dard channel (stdout or stderr), the return value from an invocation of
       open or socket, 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 out-
       put  has  been flushed; the remainder will be flushed in the background
       as fast as the underlying file or device is able to absorb it.

EXAMPLE
       Prompt for the user to type some information in on the console:

              puts -nonewline "Please type your name: "
              flush stdout
              gets stdin name
              puts "Hello there, $name!"


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       +---------------+------------------+
       |ATTRIBUTE TYPE | ATTRIBUTE VALUE  |
       +---------------+------------------+
       |Availability   | runtime/tcl-8    |
       +---------------+------------------+
       |Stability      | Uncommitted      |
       +---------------+------------------+
SEE ALSO
       file(n), open(n), socket(n), Tcl_StandardChannels(3)

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



NOTES
       This    software    was    built    from    source     available     at
       https://github.com/oracle/solaris-userland.    The  original  community
       source was downloaded from  http://prdownloads.sourceforge.net/tcl/tcl-
       core8.6.7-src.tar.gz

       Further information about this software can be found on the open source
       community website at https://www.tcl.tk/.



Tcl                                   7.5                            flush(1t)