Difference between revisions of "Yum Centos"
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=Obtaining information about a package= | =Obtaining information about a package= | ||
<source lang=cli> | <source lang=cli> | ||
| − | [root@centos1 ~]# yum info atftp | + | [root@centos1 ~]# <input>yum info atftp</input> |
Available Packages | Available Packages | ||
Name : atftp | Name : atftp | ||
| Line 69: | Line 69: | ||
: lacks IPv6 support. | : lacks IPv6 support. | ||
</source> | </source> | ||
| + | |||
=To which package does a file belong= | =To which package does a file belong= | ||
What package does this file belong to '''/etc/sestatus.conf'''. | What package does this file belong to '''/etc/sestatus.conf'''. | ||
Revision as of 07:19, 28 April 2012
Contents
- 1 yum - Yellowdog Updater Modified
- 2 Additional packages
- 3 Installing packages
- 4 Listing installed packages
- 5 Finding packages
- 6 Obtaining information about a package
- 7 To which package does a file belong
- 8 Removing installed packages
- 9 Listing available repos
- 10 Working with groups
- 11 Updating packages
yum - Yellowdog Updater Modified
yum is an interactive, rpm based, package manager. It can automatically perform system updates, including dependency analysis and obsolete processing based on "repository" metadata. It can also perform installation of new packages, removal of old packages and perform queries on the installed and/or available packages among many other commands/services (see below).
yum is similar to other high level package managers like apt-get and smart.
While there are some graphical interfaces directly to the yum code, more recent graphical interface development is happening with PackageKit and the gnome-packagekit application.
Additional packages
To install rpmforge extras it's necessary to install the rpmforge-release package by hand. The example below is for Centos 6. See http://wiki.centos.org/AdditionalResources/Repositories/RPMForge or http://pkgs.repoforge.org/rpmforge-release/ for your version.
rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt
wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm
rpm -K rpmforge-release-0.5.2-2.el6.rf.*.rpm
rpm -i rpmforge-release-0.5.2-2.el6.rf.*.rpmInstalling packages
[root@centos1 ~]# <input>yum -y install atftp-server</input>
<notice>...OMITTED OUTPUT...</notice>
---> Package atftp-server.x86_64 0:0.7-6.el6.rf will be installed
Installed:
atftp-server.x86_64 0:0.7-6.el6.rfListing installed packages
To list installed packages it is necessary to use rpm
[root@centos1 ~]# <input>rpm -qa</input>
iwl100-firmware-39.31.5.1-1.el6.noarch
hwdata-0.233-7.6.el6.noarch
aic94xx-firmware-30-2.el6.noarch
rpcbind-0.2.0-8.el6.x86_64
<notice>...OMITTED OUTPUT...</notice>Finding packages
By known filename
using a glob */FILENAME will instruct yum to search for a file in a package
For example remembering that the configuration file for a dhcp server is called dhcpd.conf - you search for the package name with the following command, and find the package is called dhcp or more specific dhcp-4.1.1-25.P1.el6.x86_64
[root@centos1 ~]# <input>yum provides */dhcpd.conf</input>
Loaded plugins: fastestmirror, security
<notice>...OMITTED OUTPUT...</notice>
12:dhcp-4.1.1-25.P1.el6.x86_64 : Dynamic host configuration protocol software
Repo : base
Matched from:
Filename : /etc/dhcp/dhcpd.confBy known function or words
It is possible to search all available packages for a text string. For example searching for a specific tftp server
[root@centos1 ~]# <input>yum search all "tftp"</input>
======================================= Matched: tftp =======================================
atftp.x86_64 : Advanced Trivial File Transfer Protocol (TFTP) client
atftp-server.x86_64 : Advanced Trivial File Transfer Protocol (TFTP) server
perl-Net-TFTP.noarch : TFTP Client class
<notice>...OUTPUT OMITTED...</output>Obtaining information about a package
[root@centos1 ~]# <input>yum info atftp</input>
Available Packages
Name : atftp
<notice>...OUTPUT OMITTED...</notice>
Description : atftp is an advanced client implementation of the TFTP
: protocol that implements RFCs 1350, 2090, 2347, 2348, and 2349.
: The server is multi-threaded and the client presents a friendly
: interface using libreadline. The current server implementation
: lacks IPv6 support.To which package does a file belong
What package does this file belong to /etc/sestatus.conf.
[root@centos1 etc]# <input>rpm -qf /etc/sestatus.conf</input>
policycoreutils-2.0.83-19.21.el6_2.x86_64
[root@centos1 etc]# <input>yum info policycoreutils-2.0.83-19.21.el6_2.x86_64</input>
Description : Security-enhanced Linux is a feature of the Linux® kernel and a number
: of utilities with enhanced security functionality designed to add
<notice>...OUTPUT OMITTED...</notice>Removing installed packages
[root@centos1 ~]# <input>yum remove rpmforge-release</input>
---> Package rpmforge-release.i686 0:0.5.2-2.el6.rf will be erased
<notice>...OUTPUT OMITTED...</notice>
Removed:
rpmforge-release.i686 0:0.5.2-2.el6.rf
Complete!Listing available repos
[root@centos1 ~]# <input>yum repolist</input>
repo id repo name status
base CentOS-6 - Base 6.294
extras CentOS-6 - Extras 4
rpmforge RHEL 6 - RPMforge.net - dag 4.309
updates CentOS-6 - Updates 784Working with groups
Groups are packages that belong together and can be installed or removed together.
Searching for a group
[root@centos1 ~]# <input>yum grouplist | grep -i nfs</input>
NFS file server==Updating
listing packages in a group
[root@centos1 ~]# <input>yum groupinfo "NFS file server"</input>
Group: NFS file server
Description: NFS file server.
Mandatory Packages:
nfs-utils
nfs4-acl-toolsInstalling or removing a group
[root@centos1 ~]# <input>yum groupinstall "NFS file server"</input>
<notice>...OUTPUT OMITTED...</notice>
[root@centos1 ~]# <input>yum groupremove "NFS file server"</input>
<notice>...OUTPUT OMITTED...</notice>Updating packages
[root@centos1 ~]# <input>yum update</input>
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
* base: centos.intergenia.de
* extras: centos.intergenia.de
* rpmforge: ftp-stud.fht-esslingen.de
* updates: centos.intergenia.de
Setting up Update Process
No Packages marked for Update