1. Let’s work from your Downloads folder.
cd ~/Downloads
2. Download the Ubuntu Fonts package from Ubuntu.
wget http://font.ubuntu.com/download/ubuntu-font-family-0.80.zip
3. Extra the downloaded zip file.
unzip ubuntu-font-family-0.80.zip
4. Rename the extracted directory. (Not a must)
mv ubuntu-font-family-0.80 ubuntu-font-family
5. Copy the extracted directory to the system shared fonts directory.
su -c 'cp -rv ubuntu-font-family /usr/share/fonts/'
6. Set the permissions for the directory you just moved.
su -c 'chmod 755 /usr/share/fonts/ubuntu-font-family'
7. Scan and build the fonts cache files for the new Ubuntu files.
cd /usr/share/fonts su -c ‘fc-cache ubuntu-font-family’
That’s it, you should now be able to use the Ubuntu fonts in your applications and documents.
In addition, you can use gnome-tweal-tool to set the fonts.
yum install gnome-tweak-tool