lttng-crash(1)
==============
+:revdate: 2 April 2020
NAME
SYNOPSIS
--------
[verse]
-*lttng-crash* [option:--extract='PATH' | option:--viewer='VIEWER'] [option:-v | option:-vv | option:-vvv]
+*lttng-crash* [option:--extract='PATH' | option:--viewer='VIEWER'] [option:-v | option:-vv | option:-vvv] 'SHMDIR'
DESCRIPTION
-----------
-The http://lttng.org/[_Linux Trace Toolkit: next generation_] is an open
+The https://lttng.org/[_Linux Trace Toolkit: next generation_] is an open
source software package used for correlated tracing of the Linux kernel,
user applications, and user libraries.
LTTng consists of Linux kernel modules (for Linux kernel tracing) and
dynamically loaded libraries (for user application and library tracing).
-The _`lttng-crash`_ command-line tool is used to recover and view
+The `lttng-crash` command-line tool is used to recover and view
LTTng trace buffers in the event of a system crash.
+`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.
+
OPTIONS
-------
command arguments as well. The trace directory paths are passed to
the 'VIEWER' command as its last arguments.
+
-Default: `babeltrace`.
+Without this option, `lttng crash` uses man:babeltrace2(1) if it's
+available. Otherwise, it tries to use man:babeltrace(1).
Program information
man:lttng-sessiond(8),
man:lttng-relayd(8),
man:lttng-ust(3),
-man:babeltrace(1)
+man:babeltrace2(1)