When things are OK
# Simply remove and install the package yum -y remove PACKAGE yum -y install PACKAGE
When things get bad
# Use rpm to force removal and reinstall with yum rpm -e --nodeps PACKAGE yum -y install PACKAGE
When things go very South
# Trick yum into thinking that the package # doesn't exist in the RPM database rpm -e --nodeps --justdb PACKAGE yum install PACKAGE
N.B. The last method doesn’t actually remove any files.
Files staged for install when performing a
yum update are kept in
/var/cache/yum/. This is useful in certain situations.