LTTNG−VERSION - Online Linux Manual PageSection : 1
Updated : 1 May 2018
Source : LTTng 2​.12​.2
Note : LTTng Manual
NAMElttng-version − Get the version of LTTng−tools
SYNOPSISlttng [GENERAL OPTIONS] version
DESCRIPTIONThe lttng version command outputs the version of LTTng−tools​. The output of lttng version is broken down into the following parts: •  Major, minor, and patch numbers •  Git commit information, if available •  Release name with its description •  LTTng project’s website URL •  License information
OPTIONSGeneral options are described in lttng(1)​.
Program information-h, --help Show command help​. This option, like lttng-help(1), attempts to launch /usr/bin/man to view the command’s man page​. The path to the man pager can be overridden by the LTTNG_MAN_BIN_PATH environment variable​. --list-options List available command options​.
ENVIRONMENT VARIABLESLTTNG_ABORT_ON_ERROR Set to 1 to abort the process after the first error is encountered​. LTTNG_HOME Overrides the $HOME environment variable​. Useful when the user running the commands has a non−writable home directory​. LTTNG_MAN_BIN_PATH Absolute path to the man pager to use for viewing help information about LTTng commands (using lttng-help(1) or lttng COMMAND --help)​. LTTNG_SESSION_CONFIG_XSD_PATH Path in which the session.xsd session configuration XML schema may be found​. LTTNG_SESSIOND_PATH Full session daemon binary path​. The --sessiond-path option has precedence over this environment variable​. Note that the lttng-create(1) command can spawn an LTTng session daemon automatically if none is running​. See lttng-sessiond(8) for the environment variables influencing the execution of the session daemon​.
FILES$LTTNG_HOME/.lttngrc User LTTng runtime configuration​. This is where the per−user current tracing session is stored between executions of lttng(1)​. The current tracing session can be set with lttng-set-session(1)​. See lttng-create(1) for more information about tracing sessions​. $LTTNG_HOME/lttng-traces Default output directory of LTTng traces​. This can be overridden with the --output option of the lttng-create(1) command​. $LTTNG_HOME/.lttng User LTTng runtime and configuration directory​. $LTTNG_HOME/.lttng/sessions Default location of saved user tracing sessions (see lttng-save(1) and lttng-load(1))​. /usr/local/etc/lttng/sessions System−wide location of saved tracing sessions (see lttng-save(1) and lttng-load(1))​. .it 1 an-trap
Note ¶.br $LTTNG_HOME defaults to $HOME when not explicitly set​.
EXIT STATUS0 Success 1 Command error 2 Undefined command 3 Fatal error 4 Command warning (something went wrong during the command)
BUGSIf you encounter any issue or usability problem, please report it on the LTTng bug tracker <https://bugs.lttng.org/projects/lttng-tools>​.
RESOURCES•  LTTng project website <https://lttng.org> •  LTTng documentation <https://lttng.org/docs> •  Git repositories <http://git.lttng.org> •  GitHub organization <http://github.com/lttng> •  Continuous integration <http://ci.lttng.org/> •  Mailing list <http://lists.lttng.org> for support and development: lttng-dev@lists.lttng.org •  IRC channel <irc://irc.oftc.net/lttng>: #lttng on irc.oftc.net
COPYRIGHTSThis program is part of the LTTng−tools project​. LTTng−tools is distributed under the GNU General Public License version 2 <http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html>​. See the LICENSE <https://github.com/lttng/lttng-tools/blob/master/LICENSE> file for details​.
THANKSSpecial thanks to Michel Dagenais and the DORSAL laboratory <http://www.dorsal.polymtl.ca/> at École Polytechnique de Montréal for the LTTng journey​. Also thanks to the Ericsson teams working on tracing which helped us greatly with detailed bug reports and unusual test cases​.
SEE ALSOlttng(1) 0
Johanes Gumabo
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