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First, rpm is RedHat Package Manager. Compilation is done with gcc, the GNU C Compiler.
To add that kernel to grub2's menu, as root you'd need to run:
grub2-mkconfig > /boot/grub2/grub.cfg #redirection is favored by Red Hat
Check out the man page @ man grub2-mkconfig
The answer is an Intruder Prevention System (IPS). An Intrusion Detection System (IDS) will detect an attack but will not block it.
Store data. do you have options?