rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/elfutils-libelf-0.137-3.el5.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/elfutils-libs-0.137-3.el5.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/elfutils-0.137-3.el5.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/gmp-4.1.4-10.el5.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/readline-5.1-3.el5.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/python-2.4.3-27.el5.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/python-iniparse-0.2.3-4.el5.noarch.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/libxml2-2.6.26-2.1.2.8.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/libxml2-python-2.6.26-2.1.2.8.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/expat-1.95.8-8.3.el5_4.2.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/python-elementtree-1.2.6-5.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/sqlite-3.3.6-5.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/python-sqlite-1.1.7-1.2.1.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/m2crypto-0.16-6.el5.6.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/python-urlgrabber-3.1.0-5.el5.noarch.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/yum-metadata-parser-1.1.2-3.el5.centos.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/nspr-4.7.6-1.el5_4.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/nss-3.12.3.99.3-1.el5.centos.2.i386.rpm
rpm --nodeps -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/rpm-4.4.2.3-18.el5.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/popt-1.10.2.3-18.el5.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/rpm-libs-4.4.2.3-18.el5.i386.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/rpm-python-4.4.2.3-18.el5.i386.rpm
rpm --nodeps -Uvh http://mirror.centos.org/centos-5/5/os/i386/CentOS/yum-3.2.22-26.el5.centos.noarch.rpm
rpm -Uvh http://mirror.centos.org/centos-5/5.5/os/i386/CentOS/yum-fastestmirror-1.1.16-14.el5.centos.1.noarch.rpm

Failed to set locale, defaulting to C
Loaded plugins: fastestmirror
error: no dbpath has been set
error: cannot open Packages database in /%{_dbpath}
Traceback (most recent call last):
  File "/usr/bin/yum", line 29, in ?
    yummain.user_main(sys.argv[1:], exit_code=True)
  File "/usr/share/yum-cli/yummain.py", line 309, in user_main
    errcode = main(args)
  File "/usr/share/yum-cli/yummain.py", line 157, in main
    base.getOptionsConfig(args)
  File "/usr/share/yum-cli/cli.py", line 187, in getOptionsConfig
    self.conf
  File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 664, in <lambda>
    conf = property(fget=lambda self: self._getConfig(),
  File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 239, in _getConfig
    self._conf = config.readMainConfig(startupconf)
  File "/usr/lib/python2.4/site-packages/yum/config.py", line 804, in readMainConfig
    yumvars['releasever'] = _getsysver(startupconf.installroot, startupconf.distroverpkg)
  File "/usr/lib/python2.4/site-packages/yum/config.py", line 877, in _getsysver
    idx = ts.dbMatch('provides', distroverpkg)
TypeError: rpmdb open failed

Unable to open pty: No such file or directory