Adding new fonts for all users (CentOs 6.5)

Login as root and create a directory under /usr/share/fonts/ for example /usr/share/fonts/custom. Copy the fonts you wish to add into the directory you created and run:

fc-cache -f /usr/share/fonts/

Ref: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/5/html/International_Language_Support_Guide/add_fonts_all_users.html