1. YUM
is an open-source command-line package-management utility for Linux operating
systems using the RPM Package Manager.
2. Yellowdog Updater Modified.
3. Auto dependency resolution.
4. Ability to specify multiple package names.
5. Only one repostiry will be active. So kindly
ensure that respositry is updated.
6. Repositry can be available either –
a. Locally
b. FTP server
c. HTTP server
Createrepo:
1. Creates sub-directories (repodata) ancillary
files and various DB files to serve the packages to ‘yum’ clients.
2. Ensure that ‘createrepo’ package is installed
before running/creating local repo directory; running the command ‘createrepo’.
3. ‘createrepo’ command queries all current
packages (differ to each version) and generates a SQLite DB and anciallary
files beneath: ‘repodata’ directory.
4. Ensure the creation of a valid repo file for
the locally.
Output:
[root@TestServer yum.repos.d]# createrepo /etc/yum.repos.d/packages
(Note: create
local repostiry using “createrepo” command for building the local yum reposity)
Where
/etc/yum.repos.d/packages is the path of the location where the packages are
stored locally to the system.
Output:
[root@TestServer
yum.repos.d]# yum list repo
Loaded
plugins: product-id, refresh-packagekit, security, subscription-manager
Updating
certificate-based repositories.
Unable to read
consumer identity
packages
| 1.3 kB 00:00 ...
packages/primary | 1.7
MB 00:00 ...
packages
3653/3653
Error: No
matching Packages to list
/etc/yum.conf:
1. Configuration file.
2. Specifies the yum log file.
Default log file: /var/log/yum.log
Provides the information about recently
installed packages to the server/yum client.
3. Defines where the repo directory has to be
placed/located/created.
‘repos’ file:
[abcd] header
file.
name=ABCD à name of
the repositry
baseurl= base url path, where the packages and repo directory
is created.
# yum info
1. Provides the status of the packages installed.
2. Provides the details about the specified
package description, type, release, arch of the packages.
3. Lists package meta data.
# yum search
Search whether the package is installed, available
on the repository.
# yum history Much
used as the time of auditing.
1. Lists out the usage/transaction
2. What has been carried out, i.e,
install/remove/re-install/upgrade
3. Who performed the action.
# yum repolist Lists out the created/available
repository created.
# yum install
1. To install packages once.
2. Can also install multiple packages at a time (# yum install ).
Output:
[root@TestServer
yum.repos.d]# yum install http*
Loaded
plugins: product-id, refresh-packagekit, security, subscription-manager
Updating
certificate-based repositories.
Unable to read
consumer identity
Setting up
Install Process
Package
httpd-2.2.15-15.el6_2.1.x86_64 already installed and latest version
Package
httpd-tools-2.2.15-15.el6_2.1.x86_64 already installed and latest version
Resolving
Dependencies
--> Running
transaction check
--->
Package httpd-devel.x86_64 0:2.2.15-15.el6_2.1 will be installed
-->
Processing Dependency: apr-util-devel for package:
httpd-devel-2.2.15-15.el6_2.1.x86_64
-->
Processing Dependency: apr-devel for package:
httpd-devel-2.2.15-15.el6_2.1.x86_64
--->
Package httpd-manual.noarch 0:2.2.15-15.el6_2.1 will be installed
--> Running
transaction check
--->
Package apr-devel.x86_64 0:1.3.9-3.el6_1.2 will be installed
--->
Package apr-util-devel.x86_64 0:1.3.9-3.el6_0.1 will be installed
-->
Processing Dependency: openldap-devel for package: apr-util-devel-1.3.9-3.el6_0.1.x86_64
-->
Processing Dependency: expat-devel for package:
apr-util-devel-1.3.9-3.el6_0.1.x86_64
-->
Processing Dependency: db4-devel for package:
apr-util-devel-1.3.9-3.el6_0.1.x86_64
--> Running
transaction check
--->
Package db4-devel.x86_64 0:4.7.25-17.el6 will be installed
-->
Processing Dependency: db4-cxx = 4.7.25-17.el6 for package:
db4-devel-4.7.25-17.el6.x86_64
-->
Processing Dependency: libdb_cxx-4.7.so()(64bit) for package:
db4-devel-4.7.25-17.el6.x86_64
--->
Package expat-devel.x86_64 0:2.0.1-11.el6_2 will be installed
--->
Package openldap-devel.x86_64 0:2.4.23-26.el6 will be installed
-->
Processing Dependency: cyrus-sasl-devel >= 2.1 for package:
openldap-devel-2.4.23-26.el6.x86_64
--> Running
transaction check
---> Package
cyrus-sasl-devel.x86_64 0:2.1.23-13.el6 will be installed
--->
Package db4-cxx.x86_64 0:4.7.25-17.el6 will be installed
-->
Finished Dependency Resolution
Dependencies
Resolved
===========================================================================Package Arch Version Repository Size
===========================================================================Installing:
httpd-devel x86_64 2.2.15-15.el6_2.1 packages 147 k
httpd-manual noarch 2.2.15-15.el6_2.1 packages 781 k
Installing for
dependencies:
apr-devel x86_64 1.3.9-3.el6_1.2 packages 176 k
apr-util-devel x86_64 1.3.9-3.el6_0.1 packages 69 k
cyrus-sasl-devel x86_64 2.1.23-13.el6 packages 302 k
db4-cxx x86_64 4.7.25-17.el6 packages 588 k
db4-devel x86_64 4.7.25-17.el6 packages 6.6 M
expat-devel x86_64 2.0.1-11.el6_2 packages 120 k
openldap-devel x86_64 2.4.23-26.el6 packages 1.1 M
Transaction
Summary
===========================================================================
Install 9 Package(s)
Total download
size: 9.8 M
Installed
size: 37 M
Is this ok
[y/N]:
Downloading
Packages:
---------------------------------------------------------------------------
Total
64 MB/s | 9.8 MB 00:00
Running
rpm_check_debug
Running
Transaction Test
Transaction
Test Succeeded
Running
Transaction
Warning: RPMDB
altered outside of yum.
Installing :
apr-devel-1.3.9-3.el6_1.2.x86_64
1/9
Installing :
expat-devel-2.0.1-11.el6_2.x86_64
2/9
Installing :
db4-cxx-4.7.25-17.el6.x86_64
3/9
Installing :
db4-devel-4.7.25-17.el6.x86_64
4/9
Installing : cyrus-sasl-devel-2.1.23-13.el6.x86_64
5/9
Installing :
openldap-devel-2.4.23-26.el6.x86_64
6/9
Installing : apr-util-devel-1.3.9-3.el6_0.1.x86_64
7/9
Installing :
httpd-devel-2.2.15-15.el6_2.1.x86_64
8/9
Installing :
httpd-manual-2.2.15-15.el6_2.1.noarch
9/9
Installed
products updated.
Verifying
: openldap-devel-2.4.23-26.el6.x86_64
1/9
Verifying
: cyrus-sasl-devel-2.1.23-13.el6.x86_64
2/9
Verifying
: apr-util-devel-1.3.9-3.el6_0.1.x86_64
3/9
Verifying
: db4-cxx-4.7.25-17.el6.x86_64 4/9
Verifying
: expat-devel-2.0.1-11.el6_2.x86_64
5/9
Verifying
: db4-devel-4.7.25-17.el6.x86_64 6/9
Verifying
: apr-devel-1.3.9-3.el6_1.2.x86_64
7/9
Verifying
: httpd-manual-2.2.15-15.el6_2.1.noarch 8/9
Verifying
: httpd-devel-2.2.15-15.el6_2.1.x86_64
9/9
Installed:
httpd-devel.x86_64 0:2.2.15-15.el6_2.1 httpd-manual.noarch
0:2.2.15-15.el6_2.1
Dependency
Installed:
apr-devel.x86_64 0:1.3.9-3.el6_1.2 apr-util-devel.x86_64
0:1.3.9-3.el6_0.1
cyrus-sasl-devel.x86_64 0:2.1.23-13.el6
db4-cxx.x86_64 0:4.7.25-17.el6 db4-devel.x86_64 0:4.7.25-17.el6 expat-devel.x86_64 0:2.0.1-11.el6_2
openldap-devel.x86_64 0:2.4.23-26.el6
Complete!
|
NOTE:
If
the package is already installed/present/available version, and the
installing version is same, then no action will be taken.
|
# yum reinstall
1. To reinstall the package, when the package is
already installed.
2. The above command functions similar to # rpm
–replace option.
3. Imagine if the package is NOT installed it
will NOT work. Means, it will NOT
install the package.
# yum –u reinstall
Where –
-y = yes à to predefine yes, so that the package will be
installed.
# yum erase
# yum –y erase
Where –
-y = yes à to predefine yes.
Will NOT check with the yum server/repository while
removing/deleting the package.
It checks the local system, if the package is
installed, it removes/deletes it.
# yum deplist
Displays the dependencies and their providers.
# yum localinstall
1. To install packages from the local file
system.
2. While locally installing the package, complete
name of the package along with the version has to be specified.
