man > revtwoway(3am)

REVTWOWAY(3am)                        GNU Awk Extension Modules                       REVTWOWAY(3am)

NAME
       revtwoway - Reverse strings sample two-way processor extension

SYNOPSIS
       @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 program.  It's main purpose is  to  show  how  to
       write a two-way extension, although it may also be mildly amusing.

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

AUTHOR
       Arnold Robbins, arnold AT skeeve.com.

COPYING PERMISSIONS
       Copyright © 2012, 2013, 2018, 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 distrib‐
       uted under the terms of a permission notice identical to this one.

       Permission is granted to copy and distribute translations of this manual  page  into  another
       language,  under  the above conditions for modified versions, except that this permission no‐
       tice may be stated in a translation approved by the Foundation.

Free Software Foundation                     Feb 21 2018                              REVTWOWAY(3am)