YUM also known as Yellowdog Updater Modified. it is an open source command-line and graphical based package management tool for RPM (RedHat Package Manager which is a Linux based system. YUM allows system administrators and users to install, update, remove or search software packages on a system. The steps you should take when trying to install the YUM package are as follows:
1) Install new Fedora repos (if not already installed)
# wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
# wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
# rpm -Uvh remi-release-6*.rpm epel-release-6*.rpm
2) Command to install a package with yum:
# yum install "Package_Name"
yum install mcrypt
2) Command to delete a package with yum:
# yum remove "Package_Name"
yum remove mcrypt
3) Command to update a package with yum:
# yum rupdate "Package_Name"
yum update openssl
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