How to check the Spark version

Question

as titled, how do I know which version of spark has been installed in the CentOS?

The current system has installed cdh5.1.0.

Answer 1

In order to print the Spark's version on the shell, following solution work.

SPARK_VERSION=$(spark-shell --version &> tmp.data ; grep version tmp.data | head -1 | awk '{print $NF}';rm tmp.data)
echo $SPARK_VERSION