lttng-crash(1) ============== :revdate: 2 April 2020 NAME ---- lttng-crash - Recover and view LTTng 2 trace buffers in the event of a crash SYNOPSIS -------- [verse] *lttng-crash* [option:--extract='PATH' | option:--viewer='VIEWER'] [option:-v | option:-vv | option:-vvv] DESCRIPTION ----------- 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 LTTng trace buffers in the event of a system crash. OPTIONS ------- option:-x 'PATH', option:--extract='PATH':: Extract recovered traces to path 'PATH'; do not execute the trace viewer. option:-v, option:--verbose:: Increase verbosity. + Three levels of verbosity are available, which are triggered by appending additional `v` letters to the option (that is, `-vv` and `-vvv`). option:-e 'VIEWER', option:--viewer='VIEWER':: Use trace viewer 'VIEWER' to view the trace buffers. 'VIEWER' is the absolute path to the viewer command to use, and it can contain command arguments as well. The trace directory paths are passed to the 'VIEWER' command as its last arguments. + Without this option, `lttng crash` uses man:babeltrace2(1) if it's available. Otherwise, it tries to use man:babeltrace(1). Program information ~~~~~~~~~~~~~~~~~~~ option:-h, option:--help:: Show help. option:-V, option:--version:: Show version. EXIT STATUS ----------- *0*:: Success *1*:: Error *3*:: Fatal error include::common-footer.txt[] SEE ALSO -------- man:lttng(1), man:lttng-sessiond(8), man:lttng-relayd(8), man:lttng-ust(3), man:babeltrace2(1)