dev编译spark源码一直编译不了，求解答

[hadoop@localhost spark-2.1.0]$ ./dev/make-distribution.sh –name 2.6.0-cdh5.7.0 –tgz -Pyarn -Phadoop-2.6 -Dhadoop.version=2.6.0-cdh5.7.0 -Phive -Phive-thriftserver

+++ dirname ./dev/make-distribution.sh

++ cd ./dev/..

++ pwd

+ SPARK_HOME=/home/hadoop/source/spark-2.1.0

+ DISTDIR=/home/hadoop/source/spark-2.1.0/dist

+ MAKE_TGZ=false

+ MAKE_PIP=false

+ MAKE_R=false

+ NAME=none

+ MVN=/home/hadoop/source/spark-2.1.0/build/mvn

+ (( 8 ))

+ case $1 in

+ break

+ '[' -z /home/hadoop/app/jdk1.8.0_191 ']'

++ command -v git

+ '[' ']'

++ command -v /home/hadoop/source/spark-2.1.0/build/mvn

+ '[' '!' /home/hadoop/source/spark-2.1.0/build/mvn ']'

++ tail -n 1

++ grep -v INFO

++ /home/hadoop/source/spark-2.1.0/build/mvn help:evaluate -Dexpression=project.version $'\342\200\223name' 2.6.0-cdh5.7.0 $'\342\200\223tgz' -Pyarn -Phadoop-2.6 -Dhadoop.version=2.6.0-cdh5.7.0 -Phive -Phive-thriftserver

+ VERSION=

[hadoop@localhost spark-2.1.0]$

自动又返回命令行输入了，为啥呀？