revtwoway

       @load "revtwoway"

       BEGIN {
           cmd = "/magic/mirror"
           print "hello, world" |& cmd
           cmd |& getline result
           print result
           close(cmd)
       }

DESCRIPTION
       The  revtwoway  extension adds a simple two-way processor that reverses
       the characters in each line sent to it for reading back by the AWK pro-
       gram.   It's  main purpose is to show how to write a two-way extension,
       although it may also be mildy amusing.

SEE ALSO
       GAWK:  Effective   AWK   Programming,   filefuncs(3am),   fnmatch(3am),
       fork(3am),   inplace(3am),  ordchr(3am),  readdir(3am),  readfile(3am),
       revoutput(3am), rwarray(3am), time(3am).

AUTHOR
       Arnold Robbins, arnold@skeeve.com.

COPYING PERMISSIONS
       Copyright (C) 2012, 2013, Free Software Foundation, Inc.

       Permission is granted to make and distribute verbatim  copies  of  this
       manual  page  provided  the copyright notice and this permission notice
       are preserved on all copies.

       Permission is granted to copy and distribute modified versions of  this
       manual  page  under  the conditions for verbatim copying, provided that
       the entire resulting derived work is distributed under the terms  of  a
       permission notice identical to this one.

       Permission  is granted to copy and distribute translations of this man-
       ual page into another language, under the above conditions for modified
       versions,  except that this permission notice may be stated in a trans-
       lation approved by the Foundation.

Free Software Foundation          Jan 15 2013                   REVTWOWAY(3am)
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