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

revoutput - Reverse output strings sample extension

@load "revoutput"

BEGIN { REVOUT = 1 } # Reverse all output strings

The revoutput extension adds a simple output wrapper that reverses the characters in each output line. It's main purpose is to show how to write an output wrapper, although it may be mildly amusing for the unwary.

@load "revoutput"
BEGIN {
    REVOUT = 1
    print "hello, world" > "/dev/stdout"
}

The output from this program is:

dlrow ,olleh

This extension does not affect the default standard output.

GAWK: Effective AWK Programming, filefuncs(3am), fnmatch(3am), fork(3am), inplace(3am), ordchr(3am), readdir(3am), readfile(3am), rwarray(3am), time(3am).

Arnold Robbins, arnold@skeeve.com.

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Aug 02 2015 Free Software Foundation