Question: how to uninstall software in linux. I am facing issues installing No machine setup(NX)

Answer: 
`rpm -e <package>` or `yum remove <package>` if it was installed via a package. Otherwise `make uninstall` or judicious use of `rm`.
If I want to uninstall a program quickly and I only know part of the name I find the following commands always nice.

Lets say I want to remove only tomcat from my system, I use:

> 
> rpm -qa | grep "tomcat" | xargs rpm -e
> 
> 
> 

If I want to remove tomcat and all its dependencies I use:

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> rpm -qa | grep "tomcat" | xargs yum erase -y
> 
> 
> 

There are all kinds of variations on these commands, and they can be quite powerful.