依次执行两个命令

cd /opt/RocketMQ && mvn -Dmaven.test.skip=true clean package install assembly:assembly -U

查看系统版本和位数

• cat /etc/redhat-release

CentOS Linux release 7.5.1804 (Core)

• cat /proc/version

Linux version 3.10.0-862.9.1.el7.x86_64 (builder@kbuilder.dev.centos.org) 
(gcc version 4.8.5 20150623 (Red Hat 4.8.5-28) (GCC) ) 
#1 SMP Mon Jul 16 16:29:36 UTC 2018

• uname -a

Linux localhost.localdomain 3.10.0-862.9.1.el7.x86_64 #1 SMP Mon Jul 16 16:29:36 UTC 2018 
x86_64 x86_64 x86_64 GNU/Linux

• getconf LONG_BIT #64

• file /bin/ls

/bin/ls: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), 
dynamically linked (uses shared libs), 
for GNU/Linux 2.6.32, BuildID[sha1]=c5ad78cfc1de12b9bb6829207cececb990b3e987, 
stripped