How to find out what version of maven I am using -

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the following command in terminal not working (mac user)

mvn --version

i want find out version of maven have. know have maven because use time wondering command not working.

for mac user follow below link: http://coolestguidesontheplanet.com/installing-homebrew-os-x-yosemite-10-10-package-manager-unix-apps/

then after follow directions enter

brew install maven

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