RHEL6 – 32 -YUM
As we had seen earlier in last post that how to install
RPM packages. YUM is also a way to do same. If both have same purpose then what
is need of yum?
YUM is preferable way to install RPM packages, because
its capability to resolve dependency.
YUM is the primary tool for getting, installing,
deleting, querying, and managing Red Hat Enterprise Linux RPM software packages
from official Red Hat software repositories, as well as other third-party
repositories. YUM is used in Red Hat Enterprise Linux versions 5 and later.
YUM stands for Yellow dog Updater, Modified because it is
based on YUP, the Yellow dog Updater. Yellow Dog is a version of Linux for the
Power Architecture hardware. YUP, and later YUM, were written by the Linux
community as a way to maintain an RPM-based system.
Before using YUM, we need to create YUM Repository.
Procedure to create YUM REPO is in following link,
How to list all installed & available packages via
yum?
[root@rhel6-test1 ~]# yum list all
How to list only installed packages with yum?
[root@rhel6-test1 ~]# yum list installed |wc -l
902
How to list particular installed/not installed package
via yum?
How to check particular package is installed or not?
[root@rhel6-test1 ~]# yum list vsftpd
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Installed Packages
ççç
vsftpd.x86_64 2.2.2-11.el6 installed ççç
[root@rhel6-test1 ~]# yum list finger
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Available Packages
ççç
finger.x86_64 0.17-39.el6 localrepo ççç
How to get the package install path via yum?
For this we need a yum utility called “yum-utils”
Let’s check it is installed or not.
[root@rhel6-test1 ~]# yum list yum-utils
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Installed Packages
yum-utils.noarch
1.1.30-14.el6 @anaconda-RedHatEnterpriseLinux-201301301459.x86_64/6.4
Package is installed, if not then we can do
[root@rhel6-test1 ~]# yum install yum-utils
Now we can query our packages via,
[root@rhel6-test1 ~]# repoquery -l vsftpd
How to install packages via yum?
[root@rhel6-test1 ~]# yum install samba
Loaded plugins: product-id, refresh-packagekit,
security, subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
localrepo
| 2.9 kB 00:00 ...
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package samba.x86_64 0:3.6.9-151.el6 will be
installed
--> Finished Dependency Resolution
Dependencies Resolved
======================================================================================================================================
Package Arch Version Repository Size
======================================================================================================================================
Installing:
samba x86_64 3.6.9-151.el6 localrepo 5.0 M
Transaction Summary
======================================================================================================================================
Install 1
Package(s)
Total download size: 5.0 M
Installed size: 18 M
Is this ok [y/N]: y ççç
If we are sure to install then can use (-y),
[root@rhel6-test1 ~]# yum install -y samba
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package samba.x86_64 0:3.6.9-151.el6 will be
installed
--> Finished Dependency Resolution
Dependencies Resolved
===============================================================================================================
Package Arch Version Repository Size
===============================================================================================================
Installing:
samba x86_64 3.6.9-151.el6 localrepo 5.0 M
Transaction Summary
===============================================================================================================
Install 1
Package(s)
Total download size: 5.0 M
Installed size: 18 M
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Warning: RPMDB altered outside of yum.
Installing :
samba-3.6.9-151.el6.x86_64
1/1
Verifying : samba-3.6.9-151.el6.x86_64
1/1
Installed:
samba.x86_64
0:3.6.9-151.el6
Complete!
How to uninstall a package via yum?
[root@rhel6-test1 ~]# yum remove samba
[root@rhel6-test1 ~]# yum erase samba
How to update a package via yum?
[root@rhel6-test1 ~]# yum update samba
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Setting up Update Process
No Packages marked for Update
**To update a package obviously we need updated version
than installed.
How to check whether any update is available or not for
installed packages from all configured yum repositories via yum?
[root@rhel6-test1 ~]# yum check-update
[root@rhel6-test1 ~]# yum list updates
YUM CHANGELOG:
Well, if the packages are updated. Then how do we know
that what changes are done by “yum update” or to see the latest changes to an
rpm package
yum-changelog is a Yum plugin for viewing package
changelogs before/after updating.
[root@rhel6-test1 ~]# yum list installed |grep
-i changelog
Nothing in o/p, means it is not installed. Verify again
[root@rhel6-test1 ~]# yum list all |grep -i
changelog
eclipse-changelog.x86_64 1:2.7.0-1.el6 localrepo
yum-plugin-changelog.noarch 1.1.30-14.el6 localrepo
Install it,
[root@rhel6-test1 ~]# yum install yum-changelog
-y
[root@rhel6-test1 ~]# yum list installed |grep
-i changelog
Loaded plugins: changelog, product-id,
refresh-packagekit, security,
yum-plugin-changelog.noarch 1.1.30-14.el6 @localrepo
How to view all changes done to a particular package via
yum?
[root@rhel6-test1 ~]# yum changelog all vsftpd
Loaded plugins: changelog, product-id,
refresh-packagekit, security,
:
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use su
bscription-manager to register.
Listing all changelogs
==================== Installed Packages
====================
vsftpd-2.2.2-11.el6.x86_64 installed
* Fri Mar 2
17:30:00 2012 Jiri Skala <jskala@rehat.com> - 2.2.2-11
- Resolves: #785084 - improved: vsftpd can not handle
square brackets in ls
* Mon Feb 13 17:30:00 2012 Jiri Skala
<jskala@rehat.com> - 2.2.2-10
- Resolves: #745133 - corrected doc for 'max_per_ip' and
'max_clients' default s
etting
* Thu Feb 2
17:30:00 2012 Jiri Skala <jskala@rehat.com> - 2.2.2-9
- Resolves: #785084 - vsftpd can not handle square
brackets in ls
- Resolves: #785061 - vsftpd child terminates when
listing files with UID/GID la rger than signed in
- Resolves: #717411 - Connection failures during upload
using PORT not handled c
leanly
- Resolves: #752954 - Disabling Reverse DNS lookups in
VSFTPd
- Resolves: #745133 - vsftpd: documentation for
'max_per_ip' default setting is
wrong
=======================O/P
REMOVED=================================
How to see the latest 5 changes to particular package via
yum?
[root@rhel6-test1 ~]# yum changelog 5 vsftpd
Loaded plugins: changelog, product-id,
refresh-packagekit, security, subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Listing 5 changelogs
==================== Installed Packages
====================
vsftpd-2.2.2-11.el6.x86_64 installed
* Fri Mar 2
17:30:00 2012 Jiri Skala <jskala@rehat.com> - 2.2.2-11
- Resolves: #785084 - improved: vsftpd can not handle
square brackets in ls
* Mon Feb 13 17:30:00 2012 Jiri Skala
<jskala@rehat.com> - 2.2.2-10
- Resolves: #745133 - corrected doc for 'max_per_ip' and
'max_clients' default setting
* Thu Feb 2
17:30:00 2012 Jiri Skala <jskala@rehat.com> - 2.2.2-9
- Resolves: #785084 - vsftpd can not handle square
brackets in ls
- Resolves: #785061 - vsftpd child terminates when
listing files with UID/GID larger than signed in
- Resolves: #717411 - Connection failures during upload
using PORT not handled cleanly
- Resolves: #752954 - Disabling Reverse DNS lookups in
VSFTPd
- Resolves: #745133 - vsftpd: documentation for
'max_per_ip' default setting is wrong
- Resolves: #765757 - SITE HELP offers CHMOD even when it
is disabled/unavailable
- Resolves: #701300 - vsftpd.conf lists incorrect default
value for xferlog_file
- Resolvse: #785642 - Invalid error recovery in
vsf_privop_pasv_listen()
* Mon Dec 12 17:30:00 2011 Jiri Skala
<jskala@rehat.com> - 2.2.2-8
- Resolves: #708657 - Update to rhel 6.1 broke vsftpd
authentication when using ldap
* Thu Mar 3
17:30:00 2011 Jiri Skala <jskala@rehat.com> - 2.2.2-7
- Resolves: #681892 - CVE-2011-0762 vsftpd: remote DoS
via crafted glob patter
changelog stats. 1 pkg, 1 source pkg, 5 changelogs
How to download a package from yum repo to local system
via yum?
[root@rhel6-test1 ~]# yumdownloader vsftpd
Loaded plugins: product-id, refresh-packagekit
vsftpd-2.2.2-11.el6.x86_64.rpm | 151 kB 00:00
[root@rhel6-test1 ~]# ls -ltr
vsftpd-2.2.2-11.el6.x86_64.rpm
-r--r--r--. 1 root root 154392 Apr 12 11:52
vsftpd-2.2.2-11.el6.x86_64.rpm
[root@rhel6-test1 ~]# yumdownloader finger
Loaded plugins: product-id, refresh-packagekit
finger-0.17-39.el6.x86_64.rpm | 22 kB
00:00
How to install a package locally/without yum-repo via
yum?
[root@rhel6-test1 ~]# yum localinstall
finger-0.17-39.el6.x86_64.rpm
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Setting up Local Package Process
Examining finger-0.17-39.el6.x86_64.rpm:
finger-0.17-39.el6.x86_64
Marking finger-0.17-39.el6.x86_64.rpm to be installed
Resolving Dependencies
--> Running transaction check
---> Package finger.x86_64 0:0.17-39.el6 will be
installed
--> Finished Dependency Resolution
Dependencies Resolved
===============================================================================================================
Package Arch Version Repository Size
===============================================================================================================
Installing:
finger x86_64 0.17-39.el6 /finger-0.17-39.el6.x86_64 27 k
Transaction Summary
===============================================================================================================
Install 1
Package(s)
Total size: 27 k
Installed size: 27 k
Is this ok [y/N]:
How to get the installed package information via yum?
[root@rhel6-test1 ~]# yum info samba
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Installed Packages
Name : samba
Arch :
x86_64
Version : 3.6.9
Release :
151.el6
Size : 18 M
Repo :
installed ççç
From repo :
localrepo
Summary :
Server and Client software to interoperate with Windows machines
URL : http://www.samba.org/
License :
GPLv3+ and LGPLv3+
Description :
: Samba
is the suite of programs by which a lot of PC-related
:
machines share files, printers, and other information (such as
: lists
of available files and printers). The Windows NT, OS/2, and
: Linux
operating systems support this natively, and add-on packages
: can
enable the same thing for DOS, Windows, VMS, UNIX of all
:
kinds, MVS, and more. This package provides an SMB/CIFS server
: that
can be used to provide network services to SMB/CIFS clients.
: Samba
uses NetBIOS over TCP/IP (NetBT) protocols and does NOT
: need
the NetBEUI (Microsoft Raw NetBIOS frame) protocol.
How to get the package information before installation via
yum?
[root@rhel6-test1 ~]# yum info finger
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Available Packages
Name :
finger
Arch :
x86_64
Version : 0.17
Release :
39.el6
Size : 22 k
Repo :
localrepo ççç
Summary : The
finger client
License : BSD
Description : Finger is a utility which allows users to
see information about
:
system users (login name, home directory, name, how long they've
: been
logged in to the system, etc.). The
finger package includes
: a
standard finger client.
:
: You
should install finger if you'd like to retrieve finger
:
information from other systems.
How to search package via yum?
Well, good to have search option. But why?
I know that “ssh” is installed in system, not because of
yum because I connected via ssh. Let’s search this package.
[root@rhel6-test1 ~]# yum list ssh
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Error: No matching Packages to list
[root@rhel6-test1 ~]# yum list sshd
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Error: No matching Packages to list
No result, why?
Because I forget the name of package.
Here “search” option will help.
[root@rhel6-test1 ~]# yum list ssh
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Error: No matching Packages to list ççç
[root@rhel6-test1 ~]# yum list sshd
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Error: No matching Packages to list ççç
[root@rhel6-test1 ~]# yum search ssh
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
=============================== N/S Matched: ssh
===============================
ksshaskpass.x86_64 : A KDE version of ssh-askpass with
KWallet support
libssh2.i686 : A library implementing the SSH2 protocol
libssh2.x86_64 : A library implementing the SSH2 protocol
openssh.x86_64 : An open source implementation of SSH
protocol versions 1 and 2
openssh-askpass.x86_64 : A passphrase dialog for OpenSSH
and X
openssh-clients.x86_64 : An open source SSH client
applications
openssh-server.x86_64 : An open source SSH server daemon
trilead-ssh2.noarch : SSH-2 protocol implementation in
pure Java
jsch.noarch : Pure Java implementation of SSH2
python-paramiko.noarch : A SSH2 protocol library for
python
python-twisted-conch.x86_64 : SSH and SFTP protocol
implementation together with
: clients and
servers
Name and summary
matches only, use "search all" for everything.
Now I can get the correct package name. It’s “openssh”
not “ssh”.
How to know the package name from file name via yum?
Why it is required? Let’s say I have two files (/etc/ssh/sshd_config
& /etc/vsftpd/vsftpd.conf) and I want to know the name of package which
generated those files, then I can use following.
[root@rhel6-test1 ~]# yum provides
/etc/ssh/sshd_config
OR
[root@rhel6-test1 ~]# yum whatprovides
/etc/ssh/sshd_config
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
openssh-server-5.3p1-84.1.el6.x86_64 : An open source SSH
server daemon ççç
Repo :
localrepo
Matched from:
Filename :
/etc/ssh/sshd_config
openssh-server-5.3p1-84.1.el6.x86_64 : An open source SSH
server daemon
Repo :
installed
Matched from:
Other :
Provides-match: /etc/ssh/sshd_config
[root@rhel6-test1 ~]# yum provides /etc/vsftpd/vsftpd.conf
OR
[root@rhel6-test1 ~]# yum whatprovides
/etc/vsftpd/vsftpd.conf
Loaded
plugins: product-id, refresh-packagekit, security, subscription-manager
This
system is not registered to Red Hat Subscription Management. You can use
subscription-manager to register.
vsftpd-2.2.2-11.el6.x86_64
: Very Secure Ftp Daemon ççç
Repo : localrepo
Matched
from:
Filename : /etc/vsftpd/vsftpd.conf
vsftpd-2.2.2-11.el6.x86_64
: Very Secure Ftp Daemon
Repo : installed
Matched
from:
Other : Provides-match:
/etc/vsftpd/vsftpd.conf
We can use above command in vice versa manner also,
[root@rhel6-test1 ~]# yum provides
"ssh"
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Warning: 3.0.x versions of yum would erroneously match
against filenames.
You can use
"*/ssh" and/or "*bin/ssh" to get that behaviour
No Matches found
[root@rhel6-test1 ~]# yum provides "*/ssh"
OR
[root@rhel6-test1 ~]# yum whatprovides
"*/ssh"
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
pam_ldap-185-11.el6.i686 : PAM module for LDAP
Repo :
localrepo
Matched from:
Filename :
/usr/share/doc/pam_ldap-185/pam.d/ssh
python-twisted-conch-8.2.0-3.2.el6.x86_64 : SSH and SFTP
protocol implementation together with clients and servers
Repo : localrepo
Matched from:
Filename :
/usr/lib64/python2.6/site-packages/twisted/conch/ssh
pam_ldap-185-11.el6.x86_64 : PAM module for LDAP
Repo :
localrepo
Matched from:
Filename :
/usr/share/doc/pam_ldap-185/pam.d/ssh
openssh-5.3p1-84.1.el6.x86_64 : An open source
implementation of SSH protocol versions 1 and 2
Repo :
localrepo
Matched from:
Filename :
/etc/ssh
openssh-clients-5.3p1-84.1.el6.x86_64 : An open source
SSH client applications
Repo :
localrepo
Matched from:
Filename :
/usr/bin/ssh
openssh-clients-5.3p1-84.1.el6.x86_64 : An open source
SSH client applications
Repo :
installed
Matched from:
Filename :
/usr/bin/ssh
How to list the available yum repositories?
[root@rhel6-test1 ~]# yum repolist
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
repo id repo name status
localrepo localrepo 3,720
repolist: 3,720
How to list all enabled/disabled yum repositories?
[root@rhel6-test1 ~]# yum repolist all
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
repo id repo name
status
InstallMedia Red Hat Enterprise
Linux 6.4
disabled
localrepo localrepo
enabled: 3,720
rhel-source Red Hat Enterprise Linux 6Server -
x86_64 - Source disabled
rhel-source-beta Red Hat Enterprise
Linux 6Server Beta - x86_64 - Source
disabled
repolist: 3,720
How to reinstall a package via yum?
[root@rhel6-test1 ~]# yum reinstall samba
How to view yum history?
[root@rhel6-test1 ~]# yum history
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
ID | Login
user | Date and time | Action(s) | Altered
-------------------------------------------------------------------------------
4 | root
<root> | 2017-05-02
18:00 | Install | 1
3 | root
<root> | 2017-05-02
18:00 | Erase | 1
2 | root
<root> | 2017-05-01
18:48 | Install | 1
<
1 | System
<unset> | 2016-08-30
03:40 | Install | 886 >
history list
[root@rhel6-test1 ~]# yum history info 4
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Transaction ID : 4
Begin time :
Tue May 2 18:00:45 2017
Begin rpmdb :
891:e7af27ebc1dbb9d30649f389100ac30fedaaea23
End time
: 18:00:48 2017 (3
seconds)
End rpmdb :
892:179a357b6f7493c6e180caa759cda42f4adddbaf
User :
root <root>
Return-Code :
Success
Command Line :
install finger -y
Transaction performed with:
Installed rpm-4.8.0-32.el6.x86_64
@anaconda-RedHatEnterpriseLinux-201301301459.x86_64/6.4
Installed subscription-manager-1.1.23-1.el6.x86_64
@anaconda-RedHatEnterpriseLinux-201301301459.x86_64/6.4
Installed yum-3.2.29-40.el6.noarch
@anaconda-RedHatEnterpriseLinux-201301301459.x86_64/6.4
Packages Altered:
Install
finger-0.17-39.el6.x86_64 @localrepo
history info
[root@rhel6-test1 ~]# yum history info 3
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Transaction ID : 3
Begin time :
Tue May 2 18:00:31 2017
Begin rpmdb :
892:eb1d215fd514850e3455326e586455e5b4e2f409
End time
: 18:00:36 2017 (5
seconds)
End rpmdb :
891:e7af27ebc1dbb9d30649f389100ac30fedaaea23
User :
root <root>
Return-Code :
Success
Command Line :
erase samba
Transaction performed with:
Installed rpm-4.8.0-32.el6.x86_64
@anaconda-RedHatEnterpriseLinux-201301301459.x86_64/6.4
Installed subscription-manager-1.1.23-1.el6.x86_64
@anaconda-RedHatEnterpriseLinux-201301301459.x86_64/6.4
Installed yum-3.2.29-40.el6.noarch
@anaconda-RedHatEnterpriseLinux-201301301459.x86_64/6.4
Packages Altered:
Erase
samba-3.6.9-151.el6.x86_64 @localrepo
history info
How to undo a change via yum?
[root@rhel6-test1 ~]# yum history undo 3
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Undoing transaction 3, from Tue May 2 18:00:31 2017
Erase
samba-3.6.9-151.el6.x86_64 @localrepo
Resolving Dependencies
--> Running transaction check
---> Package samba.x86_64 0:3.6.9-151.el6 will be
installed
--> Finished Dependency Resolution
Dependencies Resolved
======================================================================================================================================
Package Arch Version Repository Size
======================================================================================================================================
Installing:
samba x86_64 3.6.9-151.el6 localrepo 5.0 M
Transaction Summary
======================================================================================================================================
Install 1
Package(s)
Total download size: 5.0 M
Installed size: 18 M
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing :
samba-3.6.9-151.el6.x86_64
1/1
Verifying : samba-3.6.9-151.el6.x86_64
1/1
Installed:
samba.x86_64
0:3.6.9-151.el6
Complete!
How to redo a change via yum?
[root@rhel6-test1 ~]# yum history redo 3
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Repeating transaction 3, from Tue May 2 18:00:31 2017
Erase
samba-3.6.9-151.el6.x86_64 @localrepo
Resolving Dependencies
--> Running transaction check
---> Package samba.x86_64 0:3.6.9-151.el6 will be
erased
--> Finished Dependency Resolution
Dependencies Resolved
===============================================================================================================================
Package Arch Version Repository Size
===============================================================================================================================
Removing:
samba x86_64 3.6.9-151.el6 @localrepo 18 M
Transaction Summary
===============================================================================================================================
Remove 1
Package(s)
Installed size: 18 M
Is this ok [y/N]:
How to get the help for yum?
[root@rhel6-test1 ~]# yum help
How to know the dependency list for a package via yum?
[root@rhel6-test1 ~]# yum deplist openssh
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
localrepo | 2.9 kB 00:00 ...
localrepo/primary_db | 3.1 MB 00:00 ...
Finding dependencies:
package: openssh.x86_64 5.3p1-84.1.el6
dependency:
initscripts >= 5.20
provider:
initscripts.x86_64 9.03.38-1.el6
dependency:
libc.so.6(GLIBC_2.8)(64bit)
provider:
glibc.x86_64 2.12-1.107.el6
dependency:
libnss3.so(NSS_3.2)(64bit)
provider:
nss.x86_64 3.14.0.0-12.el6
=========================O/P
REMOVED=================================
What is yum cache?
By default, yum deletes downloaded data files when they
are no longer needed after a successful operation. This minimizes the amount of
storage space that yum uses.
We can enable yum caching, so the yum will keep the
packages even after installation that can be used elsewhere also.
Where the temporary files created by yum are stored?
/var/cache/yum
More precisely,
/var/cache/yum/$basearch/$releasever/
$basearch is Yum variable referring to base architecture
of the system
$releasever is Yum variable referring to the release
version of RHEL
FROM RHEL-6
[root@rhel6-test1 ~]# ls -l
/var/cache/yum/x86_64/6Server/
total 12
drwxr-xr-x. 3 root root 4096 Apr 10 17:50 client
drwxr-xr-x. 4 root root 4096 Apr 10 17:50 InstallMedia
drwxr-xr-x. 3 root root 4096 May 2 18:36 localrepo
FROM RHEL-7
[root@rhel7-client ~]# ls -l
/var/cache/yum/x86_64/7Server/
total 8
drwxr-xr-x. 4 root root
31 Nov 22 19:07 InstallMedia
drwxr-xr-x. 4 root root 4096 May 2 18:53 localrepo
-rw-r--r--. 1 root root
43 Jan 21 04:10 timedhosts
Well, there are no packages stored.
Let the cache enable.
[root@rhel6-test1 ~]# vi /etc/yum.conf
[main]
cachedir=/var/cache/yum/$basearch/$releasever
keepcache=1 çç changed to 1 from 0
[root@rhel6-test1 ~]# yum makecache
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
localrepo
| 2.9 kB 00:00 ...
localrepo/other_db
| 1.6
MB 00:00 ...
Metadata Cache Created
“makecache” Is used to download and make usable all the
metadata for the currently enabled yum repositories.
How to clean yum cache?
Whenever a package is installed, yum extracts the rpm
package on the system and then installs the package and creates a cache of
metadata and packages. But after installing package the extracted files are
stores there only which may unnecessarily uses our disk space. This cache can
take up a lot space. The yum clean command allows us to clean these files. All
the files yum clean will act on are normally stored in /var/cache/yum.
[root@rhel6-test1 ~]# yum clean all
Loaded plugins: product-id, refresh-packagekit, security,
subscription-manager
This system is not registered to Red Hat Subscription
Management. You can use subscription-manager to register.
Cleaning repos: localrepo
Cleaning up Everything
** By default, yum deletes downloaded data files when
they are no longer needed after a successful operation.
How to reset the file permissions?
Why it is required,
[root@rhel6-test1 samba]# repoquery -l samba
Chosen 3 files & 1 dir from output,
/etc/pam.d/samba
/etc/samba/smbusers
/usr/bin/smbstatus
/usr/lib64/samba/auth
[root@rhel6-test1 ~]# ls -ltr /etc/pam.d/samba /etc/samba/smbusers
/usr/bin/smbstatus
-rw-r--r--.
1 root root 97 Dec 17 2012 /etc/samba/smbusers
-rw-r--r--.
1 root root 177 Dec 17 2012 /etc/pam.d/samba
-rwxr-xr-x.
1 root root 1675672 Dec 17 2012
/usr/bin/smbstatus
[root@rhel6-test1 ~]# ls -ld
/usr/lib64/samba/auth
drwxr-xr-x.
2 root root 4096 May 2 19:18
/usr/lib64/samba/auth
Now
change the permission to 777 for all.
[root@rhel6-test1 ~]# chmod 777
/etc/pam.d/samba /etc/samba/smbusers /usr/bin/smbstatus
[root@rhel6-test1 ~]# ls -ltr /etc/pam.d/samba
/etc/samba/smbusers /usr/bin/smbstatus
-rwxrwxrwx. 1 root root 97 Dec 17
2012 /etc/samba/smbusers
-rwxrwxrwx. 1 root root 177 Dec 17
2012 /etc/pam.d/samba
-rwxrwxrwx. 1 root root 1675672 Dec 17 2012 /usr/bin/smbstatus
[root@rhel6-test1 ~]# chmod 777
/usr/lib64/samba/auth
[root@rhel6-test1 ~]# ls -ld
/usr/lib64/samba/auth
drwxrwxrwx. 2 root root 4096 May 2 19:18 /usr/lib64/samba/auth
Well, suppose above was done by someone and not limited
to 4 files, several file perms are messed up of package “samba”. What to do?
[root@rhel6-test1 ~]# rpm --setperms samba
See the magic………………………
[root@rhel6-test1 ~]# ls -ltr /etc/pam.d/samba
/etc/samba/smbusers /usr/bin/smbstatus
-rw-r--r--. 1 root root 97 Dec 17
2012 /etc/samba/smbusers
-rw-r--r--. 1 root root 177 Dec 17
2012 /etc/pam.d/samba
-rwxr-xr-x. 1 root root 1675672 Dec 17 2012 /usr/bin/smbstatus
[root@rhel6-test1 ~]# ls -ld
/usr/lib64/samba/auth
drwxr-xr-x. 2 root root 4096 May 2 19:18 /usr/lib64/samba/auth
How to reset the file ownership?
[root@rhel6-test1 ~]# rpm --setugids samba
How to see the yum logs?
[root@rhel6-test1 ~]# cat /var/log/yum.log
May 02 18:00:33 Erased: samba
May 02 18:00:46 Installed: finger-0.17-39.el6.x86_64
May 02 18:05:51 Installed: samba-3.6.9-151.el6.x86_64
May 02 18:12:43 Erased: finger
May 02 18:19:07 Installed: finger-0.17-39.el6.x86_64
May 02 19:06:19 Erased: samba
May 02 19:06:19 Erased: finger
May 02 19:08:35 Installed: samba-3.6.9-151.el6.x86_64
May 02 19:08:35 Installed: finger-0.17-39.el6.x86_64
REFERENCES & GOOD READ:
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