Get the dependency

If the package is already installed, use "rpm -qR <package-name>" to get the list of packages that this package depends on. For example:

$ rpm -qR openldap

If the package is not yet installed, use "yum  deplist <package-name>" to get the list of packages that this package depends on. For example:

$ yum deplist postfix

More tips:

• Yum and RPM Tricks