安装Gentoo扩展工具包

sudo emerge --ask app-portage/gentoolkit

列出所有已安装包

equery list package_name
equery l package_name

查看已安装包装了哪些内容

equery files package_name
equery f package_name

查看一个程序属于哪个包如emacs

equery belongs emacs
equery b emacs

查看哪些包依赖于package_name

equery depends package_name
equery d package_name

查看已安装包abc用了哪些USE

equery uses package_name
equery u package_name