The dtrace command provides a generic interface to all of the essential services provided by the DTrace facility, including options to:
List the set of probes and providers currently published by DTrace
Enable probes directly using any of the probe description specifiers (provider, module, function, name)
Run the D compiler and compile one or more D program files or programs written directly on the command-line
Generate program stability reports (see Chapter 16, Stability)
Modify DTrace tracing and buffering behavior and enable additional D compiler features (see Chapter 10, Options and Tunables)
dtrace can also be used to create D scripts by
using it in a #! declaration to create an
interpreter file (see Chapter 9, Scripting).
Finally, you can use the -e option to
dtrace to compile D programs and determine
their properties without actually enabling any tracing.