revtwoway - way processor extension
@load "revtwoway"
BEGIN {
cmd = "/magic/mirror"
print "hello, world" |& cmd
cmd |& getline result
print result
close(cmd)
}
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, 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 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
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
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-5.1.1.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 Feb 21 2018 REVTWOWAY(3)