+`lttng-crash` reads files within the directory 'SHMDIR' and does one
+of:
+
+Without the option:--extract option::
+ Launches a trace reader (see the option:--viewer option) to view the
+ recovered traces.
+
+With the option:--extract option::
+ Extracts them as uncorrupted LTTng traces on the file system.
+
+'SHMDIR' is the directory specified as the argument of the
+nloption:--shm-path option of the man:lttng-create(1) command used to
+create the tracing session for which to recover the traces.
+