I love to use YUM to install application, however YUM is based on the repository to install application. Firefox4 is a new release which has no repository in /etc/yum.repos.d
Here’s how I am going to save the URL into /etc/yum.repos.d so that YUM knows where to retrieve the repos and install firefox4.
You need to be a root user to perform this action, you can either login as root using the command su – or you can use sudo as the prefix command. Using sudo will require sudoer rights.
Use your favourite text editor such as nano to edit the sudoers file in /etc/sudoers:
Next use wget to insert the URL and copy this into a repos file using wget -O option.