Uninstall Ruby on Rails on CentOS 6

Question

How can I remove Ruby on Rails and all associated gems?

I tried yum remove ruby but get this response:

yum remove ruby
Loaded plugins: fastestmirror, security
Setting up Remove Process
No Match for argument: ruby
Loading mirror speeds from cached hostfile
 * base: mirror01.th.ifl.net
 * extras: mirror01.th.ifl.net
 * updates: mirror01.th.ifl.net
No Packages marked for removal

If I write $rails -v, $ruby -v or $gem -v I still get their versions returned to me, which indicates that they're installed.

Solution

try the following,

# yum provides ruby

or

# rpm -qa | grep -i ruby

This will display the RPMs that is currently installed that provides the ruby binary.

Once you have the name of the rpm you can then run the follow to remove the RPM from your system

# yum erase <package_name>

It might be possible that

1. the ruby rpm was installed with a custom named rpm package
2. that ruby was compiled with gcc on the current host

If so, then you will need to manually remove ruby libs and binaries from your system path.

You can locate binary by

# which ruby 

Then you can proceed to remove it from your path.

Else search with find

# find / -name "*ruby*"

then proceed to remove the directories from you server.

Comments

[jpganz18]

have you tried with yum purge ruby?

[Stefan]

I get No such command: purge. Please use /usr/bin/yum --help

[FooBee]

How did you install it in the first place? yum remove etc. will only work if you installed it with yum and not if you used some ruby tools like gem or whatever they call this.

[jpganz18]

check this post.. serverfault.com/questions/41502/yum-equivalent-of-apt-get-pu‌​rge

[Stefan]

It was so long ago, I cannot remember how I installed it.