先配置：

yum install yum-utils
rpm --import "http://keyserver.Ubuntu.com/pks/lookup?op=get&search=0x3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF"
yum-config-manager --add-repo http://download.mono-project.com/repo/centos/

配置完后怎么安裝呢？上面的地址給了一句話：

Run a package upgrade to upgrade existing packages to the latest available. Then install Mono as described in the Usage section.

查看Usage是這樣的：

The package mono-devel should be installed to compile code.

The package mono-complete should be installed to install everything - this should cover most cases of “assembly not found” errors.

The package referenceassemblies-pcl should be installed for PCL compilation support - this will resolve most cases of “Framework not installed: .NETPortable” errors during software compilation.

The package ca-certificates-mono should be installed to get SSL certificates for HTTPS connections. Install this package if you run into trouble making HTTPS connections.

The module mono-xsp4 should be installed for running ASP.NET applications.

那么問題來了，到底怎么安裝？？？其實(shí)上面的意思就是這樣：

yum upgrade
yum install mono-complete

在長(zhǎng)時(shí)間的安裝之后，通過這個(gè)地址的文檔來驗(yàn)證安裝狀態(tài)：

http://www.mono-project.com/docs/getting-started/mono-basics/

當(dāng)前名稱：CentOS7安裝Mono
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