1. How to Check an
RPM Signature Package
Always check the PGP
signature of packages before installing them on your Linux systems and make
sure its integrity and origin is OK.
Use the following
command with –checksig (check signature) option to check the signature of a
package called pidgin.
[root@tecmint]# rpm
--checksig pidgin-2.7.9-5.el6.2.i686.rpm
pidgin-2.7.9-5.el6.2.i686.rpm:
rsa sha1 (md5) pgp md5 OK
2. How to Install an
RPM Package
For installing an
rpm software package, use the following command with -i option.
For example, to
install an rpm package called pidgin-2.7.9-5.el6.2.i686.rpm.
[root@tecmint]# rpm
-ivh pidgin-2.7.9-5.el6.2.i686.rpm
Preparing...
########################################### [100%]
1:pidgin
########################################### [100%]
RPM command and
options
-i : install a
package
-v : verbose for a
nicer display
-h: print hash marks
as the package archive is unpacked.
3. How to check
dependencies of RPM Package before Installing
Let’s say you would
like to do a dependency check before installing or upgrading a package.
For example, use the
following command to check the dependencies of
BitTorrent-5.2.2-1-Python2.4.noarch.rpm package.
It will display the
list of dependencies of package.
[root@tecmint]# rpm
-qpR BitTorrent-5.2.2-1-Python2.4.noarch.rpm
/usr/bin/python2.4
python >= 2.3
python(abi) = 2.4
python-crypto >=
2.0
python-psyco
python-twisted >=
2.0
python-zopeinterface
rpmlib(CompressedFileNames)
= 2.6
RPM command and
options
-q : Query a package
-p : List
capabilities this package provides.
-R: List
capabilities on which this package depends..
4. How to Install a
RPM Package Without Dependencies
If you know that all
needed packages are already installed and RPM is just being stupid,
you can ignore those
dependencies by using the option –nodeps (no dependencies check) before
installing the package.
[root@tecmint]# rpm
-ivh --nodeps BitTorrent-5.2.2-1-Python2.4.noarch.rpm
Preparing...
########################################### [100%]
1:BitTorrent
########################################### [100%]
The above command
forcefully install rpm package by ignoring dependencies errors,
but if those
dependency files are missing, then the program will not work at all, until you
install them.
5. How to check an
Installed RPM Package
Using -q option with
package name, will show whether an rpm installed or not.
[root@tecmint]# rpm
-q BitTorrent
BitTorrent-5.2.2-1.noarch
6. How to List all
files of an installed RPM package
To view all the
files of an installed rpm packages, use the -ql (query list) with rpm command.
[root@tecmint]# rpm
-ql BitTorrent
/usr/bin/bittorrent
/usr/bin/bittorrent-console
/usr/bin/bittorrent-curses
/usr/bin/bittorrent-tracker
/usr/bin/changetracker-console
/usr/bin/launchmany-console
/usr/bin/launchmany-curses
/usr/bin/maketorrent
/usr/bin/maketorrent-console
/usr/bin/torrentinfo-console
7. How to List
Recently Installed RPM Packages
Use the following
rpm command with -qa (query all) option, will list all the recently installed
rpm packages.
[root@tecmint]# rpm
-qa --last
BitTorrent-5.2.2-1.noarch Tue 04 Dec 2012 05:14:06
PM BDT
pidgin-2.7.9-5.el6.2.i686 Tue 04 Dec 2012 05:13:51
PM BDT
cyrus-sasl-devel-2.1.23-13.el6_3.1.i686 Tue 04 Dec 2012 04:43:06 PM BDT
cyrus-sasl-2.1.23-13.el6_3.1.i686 Tue 04 Dec 2012 04:43:05 PM BDT
cyrus-sasl-md5-2.1.23-13.el6_3.1.i686 Tue 04 Dec 2012 04:43:04 PM BDT
cyrus-sasl-plain-2.1.23-13.el6_3.1.i686 Tue 04 Dec 2012 04:43:03 PM BDT
8. How to List All
Installed RPM Packages
Type the following
command to print the all the names of installed packages on your Linux system.
[root@tecmint]# rpm
-qa
initscripts-9.03.31-2.el6.centos.i686
polkit-desktop-policy-0.96-2.el6_0.1.noarch
thunderbird-17.0-1.el6.remi.i686
9. How to Upgrade a
RPM Package
If we want to
upgrade any RPM package “–U” (upgrade) option will be used.
One of the major
advantages of using this option is that it will not only upgrade the latest
version of any package,
but it will also
maintain the backup of the older package
so that in case if
the newer upgraded package does not run the previously installed package can be
used again.
[root@tecmint]# rpm
-Uvh nx-3.5.0-2.el6.centos.i686.rpm
Preparing...
########################################### [100%]
1:nx
########################################### [100%]
10. How to Remove a
RPM Package
To un-install an RPM
package, for example we use the package name nx, not the original package name
nx-3.5.0-2.el6.centos.i686.rpm.
The -e (erase)
option is used to remove package.
[root@tecmint]# rpm
-evv nx
11. How to Remove an
RPM Package Without Dependencies
The –nodeps (Do not
check dependencies) option forcefully remove the rpm package from the system.
But keep in mind
removing particular package may break other working applications.
[root@tecmint]# rpm
-ev --nodeps vsftpd
12. How to Query a
file that belongs which RPM Package
Let’s say, you have
list of files and you would like to find out which package belongs to these
files.
For example, the
following command with -qf (query file) option will show you a file
/usr/bin/htpasswd is own by package httpd-tools-2.2.15-15.el6.centos.1.i686.
[root@tecmint]# rpm
-qf /usr/bin/htpasswd
httpd-tools-2.2.15-15.el6.centos.1.i686
13. How to Query a
Information of Installed RPM Package
Let’s say you have
installed an rpm package and want to know the information about the package.
The following -qi
(query info) option will print the available information of the installed
package.
[root@tecmint]# rpm
-qi vsftpd
Name :
vsftpd Relocations: (not relocatable)
Version :
2.2.2 Vendor: CentOS
Release :
11.el6 Build Date: Fri 22 Jun 2012 01:54:24 PM BDT
Install Date: Mon 17
Sep 2012 07:55:28 PM BDT Build Host:
c6b8.bsys.dev.centos.org
Group : System Environment/Daemons Source RPM:
vsftpd-2.2.2-11.el6.src.rpm
Size : 351932 License: GPLv2
with exceptions
Signature : RSA/SHA1, Mon 25 Jun 2012 04:07:34 AM BDT,
Key ID 0946fca2c105b9de
Packager : CentOS BuildSystem <http://bugs.centos.org>
Summary : Very Secure Ftp Daemon
Description :
vsftpd is a Very
Secure FTP daemon. It was written completely from
scratch.
14. Get the
Information of RPM Package Before Installing
You have download a
package from the internet and want to know the information of a package before
installing.
For example, the
following option -qip (query info package) will print the information of a
package sqlbuddy.
[root@tecmint]# rpm
-qip sqlbuddy-1.3.3-1.noarch.rpm
Name : sqlbuddy Relocations: (not
relocatable)
Version : 1.3.3 Vendor: (none)
Release : 1 Build Date: Wed 02
Nov 2011 11:01:21 PM BDT
Install Date: (not
installed) Build Host:
rpm.bar.baz
Group : Applications/Internet Source RPM: sqlbuddy-1.3.3-1.src.rpm
Size : 1155804 License: MIT
Signature : (none)
Packager : Erik M Jacobs
URL : http://www.sqlbuddy.com/
Summary : SQL Buddy รข Web based MySQL
administration
Description :
SQLBuddy is a PHP
script that allows for web-based MySQL administration.
15. How to Query
documentation of Installed RPM Package
To get the list of
available documentation of an installed package,
use the following
command with option -qdf (query document file) will display the manual pages
related to vmstat package.
[root@tecmint]# rpm
-qdf /usr/bin/vmstat
/usr/share/doc/procps-3.2.8/BUGS
/usr/share/doc/procps-3.2.8/COPYING
/usr/share/doc/procps-3.2.8/COPYING.LIB
/usr/share/doc/procps-3.2.8/FAQ
/usr/share/doc/procps-3.2.8/NEWS
/usr/share/doc/procps-3.2.8/TODO
16. How to Verify a
RPM Package
Verifying a package
compares information of installed files of the package against the rpm
database.
The -Vp (verify
package) is used to verify a package.
[root@tecmint
downloads]# rpm -Vp sqlbuddy-1.3.3-1.noarch.rpm
S.5....T. c /etc/httpd/conf.d/sqlbuddy.conf
17. How to Verify
all RPM Packages
Type the following
command to verify all the installed rpm packages.
[root@tecmint]# rpm
-Va
S.5....T. c /etc/rc.d/rc.local
.......T. c /etc/dnsmasq.conf
.......T.
/etc/ld.so.conf.d/kernel-2.6.32-279.5.2.el6.i686.conf
S.5....T. c /etc/yum.conf
S.5....T. c /etc/yum.repos.d/epel.repo
18. How to Import an
RPM GPG key
To verify
RHEL/CentOS/Fedora packages, you must import the GPG key. To do so, execute the
following command. It will import CentOS 6 GPG key.
[root@tecmint]# rpm
--import /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
19. How to List all
Imported RPM GPG keys
To print all the
imported GPG keys in your system, use the following command.
[root@tecmint]# rpm
-qa gpg-pubkey*
gpg-pubkey-0608b895-4bd22942
gpg-pubkey-7fac5991-4615767f
gpg-pubkey-0f2672c8-4cd950ee
gpg-pubkey-c105b9de-4e0fd3a3
gpg-pubkey-00f97f56-467e318a
gpg-pubkey-6b8d79e6-3f49313d
gpg-pubkey-849c449f-4cb9df30
20. How To rebuild
Corrupted RPM Database
Sometimes rpm
database gets corrupted and stops all the functionality of rpm and other
applications on the system. So,
at the time we need
to rebuild the rpm database and restore it with the help of following command.
[root@tecmint]# cd
/var/lib
[root@tecmint]# rm
__db*
[root@tecmint]# rpm
--rebuilddb
[root@tecmint]#
rpmdb_verify Packages
