>>Error: Missing Dependency: libhdf5.so.0 is needed by package octave JohnStanley Writes: yum whatprovides libhdf5.so.0 Loading "fastestmirror" plugin Loading mirror speeds from cached hostfile * base: ftp.linux.ncsu.edu * updates: styx.biochem.wfubmc.edu * addons: mirror.atlantic.net * extras: pubmirrors.reflected.net base 100% |=========================| 1.1 kB 00:00 updates 100% |=========================| 951 B 00:00 addons 100% |=========================| 951 B 00:00 extras 100% |=========================| 1.1 kB 00:00 No Matches found The package is not in the CentOS Distro. You will have to look elsewhere to find it. A good start would be google to find it and remember the whatprovides command to find what libs go with the package you need. CentOS and RHEL Versions 5 with Point releases 1,2, and 3 you can try this one here. http://rpm.pbone.net/index.php3/stat/4/idpl/4123486/com/hdf5-1.6.5-7.fc6.i38 6.rpm.html "OR" This one is for EPEL 5 on there site. http://rpm.pbone.net/index.php3/stat/4/idpl/8177721/com/hdf5-1.6.7-1.el5.i38 6.rpm.html