(gawk.info) Built-in Variables
Most `awk' variables are available for you to use for your own
purposes; they never change except when your program assigns values to
them, and never affect anything except when your program examines them.
However, a few variables in `awk' have special built-in meanings. Some
of them `awk' examines automatically, so that they enable you to tell
`awk' how to do certain things. Others are set automatically by `awk',
so that they carry information from the internal workings of `awk' to
This chapter documents all the built-in variables of `gawk'. Most
of them are also documented in the chapters describing their areas of
* User-modified Built-in variables that you change to control
* Auto-set Built-in variables where `awk' gives you
* ARGC and ARGV Ways to use `ARGC' and `ARGV'.
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