9 Scripting in DTrace

You can use the dtrace utility to create interpreter files out of D programs similar to shell scripts that you can install as reusable interactive DTrace tools. The D compiler and dtrace command provide a set of macro variables that are expanded by the D compiler that make it easy to create DTrace scripts. This chapter provides a reference for the macro variable facility and tips for creating persistent scripts.

This chapter contains the following topics:

• Interpreter Files

• Macro Variables

• Macro Arguments

• Target Process ID