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Other Features of @command{awk}

The @command{awk} language provides a number of predefined, or built-in, variables that your programs can use to get information from @command{awk}. There are other variables your program can set as well to control how @command{awk} processes your data.

In addition, @command{awk} provides a number of built-in functions for doing common computational and string related operations. @command{gawk} provides built-in functions for working with timestamps, performing bit manipulation, and for runtime string translation.

As we develop our presentation of the @command{awk} language, we introduce most of the variables and many of the functions. They are defined systematically in section Built-in Variables, and section Built-in Functions.

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