I edited root ~/.bashrc today, and suddenly the system became lagged so I tried to reboot it. and the screen showed that I cannot login in at all. the system version is redhat 6.5and there is a particular important file in it. how to recovery the system or at least backup my file?I tried to hard reboot.and after I editing bashrc I executed chmod u+x ~/.bashrc  source ~/.bashrcand I cannot login single user mode too
cannot login system but kept showing  out of memory killed process
rhel;login