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