The crash utility is no longer supported in this release. In the Solaris 9 software, the mdb(1) utility provides a function that is similar to the crash utility. The mdb utility also examines system crash dump files. The crash utility's interface has been structured around implementation details, such as slots, that have no relation to the Solaris software implementation.
“Transition From” in Solaris Modular Debugger Guide provides information for users who are making the transition from using crash to using mdb.