Use the obsoletes tag in the specfile. This will cause “package-oldname” to be uninstalled before installing “package-renamed”.


Name: package-renamed
Obsoletes: package-oldname


An example of using dd to create a 1GB file.

dd if=/dev/zero of=testfile bs=1M count=1024



SET FOREIGN_KEY_CHECKS = 0;
SELECT @@FOREIGN_KEY_CHECKS;
SET FOREIGN_KEY_CHECKS = 1;


Alexander Stetsenko blog has more info about it.

Not immediately obvious, but if you’re looking for an rpm to install the Apache2::Request module you need perl-libapreq2 (this works in CentOS 5 and I imagine others as well).

yum install perl-libapreq2

List available repositores
yum repolist
Search by package name (case insensitive)
yum list "*package*"
List files inside a repository package (regardless if that package has been installed)
repoquery --list <PACKAGE_NAME>

Add the following to the /etc/sudoers file:

<USERNAME> ALL= NOPASSWD: ALL