AWK Commands
AWK commands are the statements that are substituted for action in the examples above. AWK commands can include function calls, variable assignments, calculations, or any combination thereof. AWK contains built-in support for many functions; many more are provided by the various flavors of AWK. Also, some flavors support the inclusion of dynamically linked libraries, which can also provide more functions.
For brevity, the enclosing curly braces ( { } ) will be omitted from these examples.
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—Theodor W. Adorno (1903–1969)