To install man pages on Ubuntu Linux, you can use the package manager apt. Open a terminal and enter the following command:
sudo apt-get install manpages-dev
This will install the man pages for the development libraries and headers on your system. If you want to install the man pages for a specific package, you can use the following command:
sudo apt-get install manpages-dev package-name
Be sure to replace “package-name” with the actual name of the package you want to install man pages for.