Did you install Redis using the system package manager? I mean
yum, etc. If so, Redis server is installed in your system so you won't need to install it again. Apart from that, if you did any modification in the
ctlscript.sh to include Redis on it, you can backup the new
ctlscript.sh script so it is easy to get back if necessary and the copy your custom
ctlscript.sh to the new installation folder. Remember to modify system paths inside the
ctlscript.sh with new installation directory.
Hope it helps,