lttng-remove-trigger - Man Page

Remove an LTTng trigger

Synopsis

lttng [GENERAL OPTIONS] remove-trigger [--owner-uid=UID] NAME

Description

The lttng remove-trigger command removes the trigger named NAME.

See lttng-concepts(7) to learn more about LTTng triggers.

List the triggers of your Unix user, or of all users if your Unix user is root, with the lttng-list-triggers(1) command.

The remove-trigger command removes a trigger which belong to your Unix user. If your Unix user is root, you can remove the trigger of another user with the --owner-uid option.

See the “Examples” section below for usage examples.

Options

Identification

--owner-uid=UID

Remove the trigger named NAME of the Unix user having the user ID UID.

You may only use this option if your Unix user is root.

Program information

-h,  --help

Show help.

This option attempts to launch /usr/bin/man to view this manual page. Override the manual pager path with the LTTNG_MAN_BIN_PATH environment variable.

--list-options

List available command options and quit.

Exit Status

0

Success

1

Command error

2

Undefined command

3

Fatal error

4

Command warning (something went wrong during the command)

Environment

LTTNG_ABORT_ON_ERROR

Set to 1 to abort the process after the first error is encountered.

LTTNG_HOME

Path to the LTTng home directory.

Defaults to $HOME.

Useful when the Unix user running the commands has a non-writable home directory.

LTTNG_MAN_BIN_PATH

Absolute path to the manual pager to use to read the LTTng command-line help (with lttng-help(1) or with the --help option) instead of /usr/bin/man.

LTTNG_SESSION_CONFIG_XSD_PATH

Path to the directory containing the session.xsd recording session configuration XML schema.

LTTNG_SESSIOND_PATH

Absolute path to the LTTng session daemon binary (see lttng-sessiond(8)) to spawn from the lttng-create(1) command.

The --sessiond-path general option overrides this environment variable.

Files

$LTTNG_HOME/.lttngrc

Unix user’s LTTng runtime configuration.

This is where LTTng stores the name of the Unix user’s current recording session between executions of lttng(1). lttng-create(1) and lttng-set-session(1) set the current recording session.

$LTTNG_HOME/lttng-traces

Default output directory of LTTng traces in local and snapshot modes.

Override this path with the --output option of the lttng-create(1) command.

$LTTNG_HOME/.lttng

Unix user’s LTTng runtime and configuration directory.

$LTTNG_HOME/.lttng/sessions

Default directory containing the Unix user’s saved recording session configurations (see lttng-save(1) and lttng-load(1)).

/usr/local/etc/lttng/sessions

Directory containing the system-wide saved recording session configurations (see lttng-save(1) and lttng-load(1)).

Note

$LTTNG_HOME defaults to the value of the HOME environment variable.

Examples

Example 1. Remove a trigger.

$ lttng remove-trigger my-trigger

Example 2. Remove a trigger as another Unix user.

The command line below removes a trigger as the mireille Unix user.

Your Unix user must be root to use the --owner-uid option.

$ lttng remove-trigger --owner-uid=$(id --user mireille) \
                       my-trigger

Resources

Thanks

Special 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 Also

lttng(1), lttng-add-trigger(1), lttng-list-triggers(1), lttng-concepts(7)

Referenced By

lttng(1), lttng-add-trigger(1), lttng-concepts(7), lttng-list-triggers(1).

17 May 2021 LTTng 2.13.0 LTTng Manual