How to reinstall yum?

Question

I made a big mistake: I removed yum. So now when I for example run the following it gives me an error:

$ yum clean all
yum command not found.

I can download the package succesfully:

wget mirror.centos.org/centos/6/os/i386/Packages/yum-3.2.29-40.el6.centos.noarch.rpm
--2014-01-15 15:42:59--  http://mirror.centos.org/centos/6/os/i386/Packages/yum-3.2.29-40.el6.centos.noarch.rpm
Resolving mirror.centos.org... 192.133.139.3
Connecting to mirror.centos.org|192.133.139.3|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1019540 (996K) [application/x-rpm]
Saving to: “yum-3.2.29-40.el6.centos.noarch.rpm.1”

100%[====================================================================================================================>] 1,019,540    649K/s   in 1.5s

2014-01-15 15:43:01 (649 KB/s) - “yum-3.2.29-40.el6.centos.noarch.rpm.1” saved [1019540/1019540]

Trying to install the downloaded package gives the following error:

# rpm -ivh yum-3.2.29-40.el6.centos.noarch.rpm
Preparing...                ########################################### [100%]
    file /usr/lib/python2.6/site-packages/yum/__init__.py from install of yum-3.2.29-40.el6.centos.noarch conflicts with file from package yum-3.2.29-30.el6.centos.noarch
[...]
file /usr/share/yum-cli/yummain.pyo from install of yum-3.2.29-40.el6.centos.noarch conflicts with file from package yum-3.2.29-30.el6.centos.noarch

There is no directory "yum" in /usr/bin.

When I use the command "rpm -qa | grep yum".

yum-metadata-parser-1.1.2-16.el6.x86_64
yum-plugin-fastestmirror-1.1.30-14.el6.noarch
yum-3.2.29-30.el6.centos.noarch

The distro is CentOS 6.3.
How can I reinstall yum?

you have the exact same problem as with your ftp issue the $PATH of your computer is f$$$$ up. please give us the content of command echo $PATH if you work as root please connect to root account with the command su - and not su — Kiwy, Jan 15 '14 at 14:48

slm · Answer 1 · 2014-01-15T14:40:25.860

Given you already have yum installed you cannot do a rpm -ivh ... This command will install an RPM that hasn't been installed yet. Instead you should use either rpm -Uvh ... to upgrade the yum package or remove it first, rpm -e yum.

I would suggest doing an upgrade on the package.

$ wget http://mirror.centos.org/centos/6/os/i386/Packages/yum-3.2.29-40.el6.centos.noarch.rpm
rpm -Uvh yum-3.2.29-40.el6.centos.noarch.rpm

Relying on the package manager

RPM can help you fix issues like this, or at the very least, help to identify issues. The rpm command includes the ability to verify the packages it maintains.

 $ rpm -V yum

If there isn't an issue it will simply return nothing. If there are issues it will tell you which files are at fault.

$ rpm -V httpd
SM5....T  c /etc/httpd/conf/httpd.conf

The letters/numbers tell you about various aspects of the package which are out of specification with what was originally installed.

excerpt from rpm man page

Each of the 9 characters denotes the result of a comparison of attribute(s) of the file to the value of those attribute(s) recorded in the database. A single "." (period) means the test passed, while a single "?" (question mark) indicates the test could not be performed (e.g. file permissions prevent reading). Otherwise, the (mnemonically emBoldened) character denotes failure of the corresponding --verify test:
   S file Size differs
   M Mode differs (includes permissions and file type)
   5 digest (formerly MD5 sum) differs
   D Device major/minor number mismatch
   L readLink(2) path mismatch
   U User ownership differs
   G Group ownership differs
   T mTime differs
   P caPabilities differ

@az93 - terrific! Glad that solved your issue. Please mark this A as accepted so other's know your issue's been resolved. — slm, Jan 15 '14 at 14:41

score 0 · Answer 2 · edited Jan 15 '14 at 13:36

0

Download yum (no idea what distro you are using) you can try from here and then install the pkg with

rpm -ivh <rpm_file_name>

or check out the yum project page. For example, for yum 3.2.29-40 (32bit):

wget http://mirror.centos.org/centos/6/os/i386/Packages/yum-3.2.29-40.el6.centos.noarch.rpm
rpm -ivh yum-3.2.29-40.el6.centos.noarch.rpm –

edited Jan 15 '14 at 13:36

terdon

242,166

answered Jan 15 '14 at 11:11

b13n1u

524

How can I know which version of CentOS im using (i using PuTTy) – az93 Jan 15 '14 at 11:13
@az93 cat /etc/redhat-release should show you the version. – Jan 15 '14 at 11:23
OK thx, this is CentOS release 6.3 – az93 Jan 15 '14 at 11:25
Can you give me exactly the command. Thx – az93 Jan 15 '14 at 11:26
1

wget http://mirror.centos.org/centos/6/os/i386/Packages/yum-3.2.29-40.el6.centos.noarch.rpm ; rpm -ivh yum-3.2.29-40.el6.centos.noarch.rpm – b13n1u Jan 15 '14 at 11:37
I still got the same problem : yum command not found... I don't understand. – az93 Jan 15 '14 at 12:39
The link is not valid. – az93 Jan 15 '14 at 13:36
@az93 please [edit] your question to add the command you just ran (rpm -ivh yum...) and its output. – terdon Jan 15 '14 at 13:37
please share the output of rpm -qa | grep yum – b13n1u Jan 15 '14 at 14:25
yum-metadata-parser-1.1.2-16.el6.x86_64 yum-plugin-fastestmirror-1.1.30-14.el6.noarch yum-3.2.29-30.el6.centos.noarch – az93 Jan 15 '14 at 14:28
How did you remove yum? It looks like the old pkg is still installed. You can try to upgrade the pkg with rpm -Uvh yum-3.2.29-40.el6.centos.noarch.rpm – b13n1u Jan 15 '14 at 14:41
http://vault.centos.org/5.11/os/x86_64/CentOS/yum-3.2.22-40.el5.centos.noarch.rpm – fcm Apr 30 '17 at 02:49

score 0 · Answer 3 · edited Sep 26 '18 at 18:02

Here I’m listing the steps to resolve this problem. Execute the following YUM command for that.

Eliminate all of the header files which yum uses for dependency resolution.
```
# yum clean headers
```
Remove all of the packages held in the caches
```
# yum clean packages
```
Remove all metadata
```
# yum clean metadata
```
Clean dbcache
```
# yum clean dbcache
```
Clean all
```
# yum clean all
```

Run the update command, if all of the above mentioned commands didn’t solve the issue.

# yum -y update

If yum update failed it may be due to the corruption in RPM database under /var/lib/rpm/ location. Please do follow the below pasted steps to resolve the issue.

# rm -f /var/lib/rpm/__db.*
# rpm -vv –rebuilddb
# yum update

That’s it.

Source: [Solved] The server’s system package manager, ‘YUM’, failed : Error with easyapache

How to reinstall yum?

3 Answers3

Relying on the package manager

Linked