producing patch files to use in rpm spec files

Hi guys I am almost up to speed in patching my linux mailx. The only step I do not know how to do is >how do I produce a patch file to include in rpm spec >out of the relevant diff file? Thanks again for any help Dorit = To unsu

Re: producing patch files to use in rpm spec files

Thanks to everybody who suggested the >diff -u option. That was indeed the right answer. Next question: What do you do when you have two successive patches trying to patch the same .c file? How do you do it dynamically? Thanks Dorit