1、C语言库函数基本的帮助文档 sudo apt-get install manpages sudo apt-get install manpages-de sudo apt-get install manpages-de-dev sudo apt-get install manpages-dev 2、POSIX函数帮助文档 sudo apt-get install manpages-posix sudo apt-get install manpages-posix-dev 3、内核函数 sudo apt-get install linux-doc sudo apt-get install libcorelinux-doc 4. C++ sudo apt-get install libstdc++6-4.5-doc