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 pro-
gram. 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 per-
mission 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 ver-
sions, except that this permission notice may be stated in a translation
approved by the Foundation.
Free Software Foundation Feb 21 2018 REVTWOWAY(3am)
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