Check which version of Ruby is installed?

acschnabel · 09-29-2011, 09:14 AM

How can I check which version of Ruby is installed on my CentOS 5.6 server?

jdkaye · 09-29-2011, 09:22 AM

Code:

ruby -v

Like this:

Code:

~$ ruby -v
ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]

ciao,
jdk

acschnabel · 09-29-2011, 10:30 AM

Thanks, that worked.

Code:

ruby 1.8.7 (2009-06-12 patchlevel 174) [x86_64-linux]

This seems to be out of date and unpatched. What can I do to remedy it?

jdkaye · 09-29-2011, 11:08 AM

You haven't told anyone what distro you're using so I can't really say. Use your package manager (aptitude, yum or something else) and download the latest package. How do you update your machine in general?
jdk

irvken · 02-18-2013, 10:50 AM

I'm pretty sure I have removed all vestiges of ruby from my system but "ruby -v" returns misinformation

Code:

root@irvken:/home/sean# ruby -v
ruby 1.9.3p362 (2012-12-25 revision 38607) [x86_64-linux]

when there is no ruby installed!

jkirchner · 02-18-2013, 01:50 PM

Quote:

Originally Posted by irvken

I'm pretty sure I have removed all vestiges of ruby from my system but "ruby -v" returns misinformation

Code:

root@irvken:/home/sean# ruby -v
ruby 1.9.3p362 (2012-12-25 revision 38607) [x86_64-linux]

when there is no ruby installed!

Type in terminal

Code:

which ruby

to see where ruby is.

Might be you think you got it but did not.

irvken · 02-18-2013, 03:56 PM

Code:

root@irvken:/home/sean# which ruby
/usr/local/bin/ruby

Is it ok to just delete /usr/local/bin/ruby ?

jdkaye · 02-18-2013, 11:33 PM

what does the following command return?

Code:

aptitude search ruby1.9.3

If the ruby package is marked with an "i" (for installed) then you can try removing it with

Code:

sudo aptitude remove ruby1.9.3

But the fact that ruby is found in /usr/local/bin suggests that it wasn't installed via a package.
jdk

irvken · 02-19-2013, 03:57 AM

ok it's not installed , what does the v stand for?

Someone else suggested I must have compiled a copy of ruby (which is probable), can I just delete the binary then?

jdkaye · 02-19-2013, 11:42 PM

From the Aptitude guide:

Code:

i	-	the package is installed and all its dependencies are satisfied.
c	-	the package was removed, but its configuration files are still present.
p	-	the package and all its configuration files were removed, or the package was never installed.
v	-	the package is virtual.
B	-	the package has broken dependencies.
u	-	the package has been unpacked but not configured.
C	-	half-configured: the package's configuration was interrupted.
H	-	half-installed: the package's installation was interrupted.

As you can see, the v-flag stands for "virtual".

Yes, /usr/local/bin is the normal location for things you have compiled yourself. It should be safe to remove it.
jdk