Write documentation as if whoever reads it is a violent psychopath who knows where you live.
This chapter discusses advanced features in
It’s a bit of a “grab bag” of items that are otherwise unrelated
to each other.
First, we look at a command-line option that allows
gawk to recognize
nondecimal numbers in input data, not just in
gawk’s special features for sorting arrays are presented.
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. We then see how
can profile an
awk program, making it possible to tune
it for performance.
Next, we present an experimental feature that allows you to preserve
the values of
awk variables and arrays between runs of
Finally, we discuss the philosophy behind
Additional advanced features are discussed in separate chapters of their own:
gawk, discusses how to internationalize your
awkprograms, so that they can speak multiple national languages.
gawk’s built-in command-line debugger for debugging
gawk, describes how you can use
gawkto perform arbitrary-precision arithmetic.
gawk, discusses the ability to dynamically add new built-in functions to