Thanks to everybody, the problem is resolved. This is what I have done.
1. Downloaded the patchdiag.xref file on to the Windows text file by doing cut & paste and then moved to /var/tmp 2. Moved pca program to /var/tmp. 3. Ran pca not as root, and it picked up /var/tmp patchdiag.xref file and gave the list I wanted. Still the wget version is not working, but it seems I have a way round the problem. Many thanks Sujit
