下载mono
http://www.mono-project.com/download/stable/#download-lin-fedora
执行以下命令 fedora平台
rpm --import "http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF" su -c 'curl https://download.mono-project.com/repo/centos7-stable.repo | tee /etc/yum.repos.d/mono-centos7-stable.repo' dnf update
dnf install mono-devel
然后安装monodevelop 开发工具
yum install monodevelop