To print the help of mvn CLI:

$ mvn -h

Usage : mvn [options] [<goal(s)>] [<phase(s)>]

Option	Description
-h,--help	Display help information
-v,--version	Display version information
-V,--show-version	Display version information WITHOUT stopping build
-X,--debug	Produce execution debug output

Option	Description
-emp,--encrypt-master-password <arg>	Encrypt master security password
-ep,--encrypt-password <arg>	Encrypt server password

Option	Description
-T,--threads <arg>	Thread count, for instance 2.0C where C is core multiplied

Option	Description
-f,--file <arg>	Force the use of an alternate pom.xml file (or directory with pom.xml)
-s,--settings <arg>	Alternate path for the user settings file
-gs,--global-settings <arg>	Alternate path for the global settings file
-gt,--global-toolchains <arg>	Alternate path for the global toolchains file
-t,--toolchains <arg>	Alternate path for the user toolchains file
-l,--log-file <arg>	Log file where all build output will go (disables output color)

Option	Description
-q,--quiet	Quiet output - only show errors
-o,--offline	Work offline
-B,--batch-mode	Run in non-interactive (batch) mode (disables output color)
-N,--non-recursive	Do not recurse into sub-projects
-nsu,--no-snapshot-updates	Suppress SNAPSHOT updates
-ntp,--no-transfer-progress	Do not display transfer progress when downloading or uploading
-U,--update-snapshots	Forces a check for missing releases and updated snapshots on remote repositories

Option	Description
-pl,--projects <arg>	Comma-delimited list of specified reactor projects to build instead of all projects. A project can be specified by [groupId]:artifactId or by its relative path
-am,--also-make	If project list is specified, also build projects required by the list
-amd,--also-make-dependents	If project list is specified, also build projects that depend on projects on the list
-P,--activate-profiles <arg>	Comma-delimited list of profiles to activate
-rf,--resume-from <arg>	Resume reactor from specified project

Option	Description
-fae,--fail-at-end	Only fail the build afterwards; allow all non-impacted builds to continue
-ff,--fail-fast	Stop at first failure in reactorized builds
-fn,--fail-never	NEVER fail the build, regardless of project result
-C,--strict-checksums	Fail the build if checksums don't match
-c,--lax-checksums	Warn if checksums don't match

Option	Description
-b,--builder <arg>	The id of the build strategy to use
--color <arg>	Defines the color mode of the output. Supported are 'auto', 'always', 'never'.
-D,--define <arg>	Define a system property
-e,--errors	Produce execution error messages