Go to main content

man pages section 3: Library Interfaces and Headers

Exit Print View

Updated: Thursday, June 13, 2019
 
 

revtwoway (3)

Name

revtwoway - way processor extension

Synopsis

@load "revtwoway"

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

Description

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



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


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


       +---------------+------------------+
       |ATTRIBUTE TYPE | ATTRIBUTE VALUE  |
       +---------------+------------------+
       |Availability   | text/gawk        |
       +---------------+------------------+
       |Stability      | Volatile         |
       +---------------+------------------+
SEE ALSO
       GAWK: Effective AWK  Programming,  filefuncs(3),  fnmatch(3),  fork(3),
       inplace(3),  ordchr(3),  readdir(3),  readfile(3),  revoutput(3), rwar-
       ray(3), time(3).

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.



NOTES
       This    software    was    built    from    source     available     at
       https://github.com/oracle/solaris-userland.    The  original  community
       source                was                downloaded                from
       https://ftp.gnu.org/gnu/gawk/gawk-4.2.1.tar.xz

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



Free Software Foundation          Jan 15 2013                     REVTWOWAY(3)