The GNU Awk User's Guide
11. Advanced Features of
Write documentation as if whoever reads it is
a violent psychopath who knows where you live.
Steve English, as quoted by Peter Langston
This chapter discusses advanced features in
It's a bit of a "grab bag" of items that are otherwise unrelated
to each other.
First, a command-line option allows
gawk to recognize
nondecimal numbers in input data, not just in
programs. Next, two-way I/O, discussed briefly in earlier parts of this
Web page, is described in full detail, along with the basics
of TCP/IP networking and BSD portal files. Finally,
can profile an
awk program, making it possible to tune
it for performance.
Adding New Built-in Functions to
discusses the ability to dynamically add new built-in functions to
gawk. As this feature is still immature and likely to change,
its description is relegated to an appendix.