vi is a wonderful, full feature text editor. However, some might lack experience with vi and prefer a simpler text editor for quick configuration and crontab edits.
Installing nano is done using the yum system.
yum -y install nano
Now that we know it is installed, run this:
Then add this line at the bottom
Then log out and login again. Next time you do certain functions like edit the crontab, nano will be the default editor.