Uninstalling CTPView 9.1R1
CTPView 9.1R1 can be uninstalled from Centos 7 by performing the following steps:
Check if root login is permitted. If not, enable root login from menu -> Security Profile(1) -> Modify Security Level(5) -> Set OS level to 'very-low'(3).
Login via “root” user and run the command “sudo rpm -evh CTPView-9.1R-1.0-0.el7.centos.x86_64.rpm”.
System will reboot after uninstalling, use user (the one you created while creating CentOS) to login.