The DTrace library file, /usr/lib64/dtrace/version/procfs.d, provides a set of translators for use in your D programs to translate from the operating system kernel implementation structure for a process descriptor (struct task_struct), to the stable structures, psinfo and lwpsinfo. These structures define useful Stable information about processes and threads, such as the process ID, process priority, command name, initial arguments, and other data that is displayed by the ps command. The following table describes procfs.d translators.