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), ordchr(3am), readdir(3am), readfile(3am), revoutput(3am), rwarray(3am), time(3am).

AUTHOR¶

Arnold Robbins, arnold@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 distributed 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 notice may be stated in a translation approved by the Foundation.