I still use RCS, typically for admin files like fstab or other config files in /etc. Doing `ci -l` on a file is better and faster than `cp fstab fstab.$(date +

I still use RCS, typically for admin files like fstab or other config files in /etc. Doing `ci -l` on a file is better and faster than `cp fstab fstab.$(date +%Y%m%d.%H%M%S)`