ubuntu安装rails 出现错误

安装mysql:

按顺序执行 肯定不出错
1: sudo apt-get install mysql-server mysql-client libmysqlclient15-dev
2: sudo gem install mysql

?

这段时间把centos换成ubuntu后，环境重装，在装rails时出现了以下错误：

请注意如果使用RVM安装的Ruby，安装文件在Src文件中，而不是在Rubies文件中。

afeicool@localhost:~$ gem install railsERROR:? Loading command: install (LoadError)no such file to load -- zlibERROR:? While executing gem ... (NameError)uninitialized constant Gem::Commands::InstallCommand

解决方案：

apt-get install zlib-bin zlib1g-devcd path/to/your ruby source dir/ext/zlibruby extconf.rb with-zlib-include=/usr/include with-zlib-lib=/usr/libmakemake install