centos安装mono：
添加源
rpm --import "http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF"
yum-config-manager --add-repo http://download.mono-project.com/repo/centos/安装 mono
yum install mono安装jexus
jexus curl jexus.org/5.6.x/install | sh