When I visited the kernel.org website to download the latest Linux kernel, I noticed a package named 2.6.37-rc5 in the repository. What is the meaning of the rc5 at the end?
Meaning of rc5 in linux kernel 2.6.37-rc5
linux;kernel;version
Release Candidate.By convention, whenever an update for a program is almost ready, the test version is given a rc number.  If critical bugs are found, that require fixes, the program is updated and reissued with a higher rc number.  When no critical bugs remain, or no additional critical bugs are found, then the rc designation is dropped.