9.1 Built-in Functions

Built-in functions are always available for your awk program to call. This section defines all the built-in functions in awk; some of these are mentioned in other sections but are summarized here for your convenience.

Calling Built-in    How to call built-in functions.
Numeric Functions    Functions that work with numbers, including

int(), sin() and rand().

String Functions    Functions for string manipulation, such as

split(), match() and sprintf().

I/O Functions    Functions for files and shell commands.
Time Functions    Functions for dealing with timestamps.
Bitwise Functions    Functions for bitwise operations.
Type Functions    Functions for type information.
I18N Functions    Functions for string translation.