sudo apt-get install manpages sudo apt-get install manpages-de sudo apt-get install manpages-de-dev sudo apt-get install manpages-dev
sudo apt-get install manpages-posix sudo apt-get install manpages-posix-dev
sudo apt-get install linux-doc
man 2 open
man 3 perror
原文：https://www.cnblogs.com/wpjamer/p/9245994.html