Can't uninstall gems on Ubuntu


#1

Hello,

I installed net-ssh gem from normal account, and got such warnings:

$ gem install net-ssh
WARNING: Installing to ~/.gem since /usr/lib/ruby/gems/1.8 and
/usr/bin aren’t both writable.
WARNING: You don’t have /home/alex/.gem/ruby/1.8/bin in your PATH,
gem executables will not run.

To make sure the gem installed:

$ gem list
*** LOCAL GEMS ***
net-ssh (2.0.11, 2.0.10)

Now I try to uninstall it.

$ gem uninstall net-ssh
ERROR: While executing gem … (Gem::InstallError)
Unknown gem net-ssh

$ gem list
*** LOCAL GEMS ***
net-ssh (2.0.11, 2.0.10)

So I installed a gem, but can’t remove it. What is wrong here?

My system is Ubuntu 8.04,
$ gem -v
1.3.1

$ ruby -v
ruby 1.8.6 (2007-09-24 patchlevel 111) [i486-linux]

Thanks,

  • Alex

#2

Well, just a couple of guesses here, but:

It installed to your home directory because you don’t have write rights
to the system directories. If you have sudo, sudo gem install net-ssh
might have worked.

The second warning on the install probably also tells you why it won’t
uninstall.


#3

On Wed, May 27, 2009 at 11:28 AM, Nation, Carey
removed_email_address@domain.invalid wrote:

Well, just a couple of guesses here, but:

It installed to your home directory because you don’t have write rights
to the system directories. If you have sudo, sudo gem install net-ssh
might have worked.

The second warning on the install probably also tells you why it won’t
uninstall.

Actually, I think that it’s because gem uninstall defaults to
installing from the system gem directory.

WARNING: Installing to ~/.gem since /usr/lib/ruby/gems/1.8 and
/usr/bin aren’t both writable.

I suspect that

$gem uninstall -i~/.gem net-ssh

might work.


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#4

Actually, I think that it’s because gem uninstall defaults to
installing from the system gem directory.

WARNING: Installing to ~/.gem since /usr/lib/ruby/gems/1.8 and
/usr/bin aren’t both writable.

Sorry for being vague. That’s what I meant, actually. That is, since
ruby in general couldn’t run the gems there as the location wasn’t in
the path, it wouldn’t be able to uninstall them, either.


#5

It installed to your home directory because you don’t have write rights
to the system directories. If you have sudo, sudo gem install net-ssh
might have worked.

Yes, if done with sudo it works fine. But I cann’t remove that wrongly
instaled gems :slight_smile:

The second warning seems useless, as I have no such folder at all
/home/alex/.gem/ruby/1.8/bin


#6

I suspect that

$gem uninstall -i~/.gem net-ssh

might work.

Unsuccessfully it does not :frowning:


#7

On May 27, 2009, at 10:56, Alex 2k8 wrote:

$ gem list
*** LOCAL GEMS ***
net-ssh (2.0.11, 2.0.10)

So I installed a gem, but can’t remove it. What is wrong here?

Upgrade to 1.3.4, the bug was fixed in the meantime.