RPM commands in Linux

RPM code is used for Linux like operating system ( RHEL , Centos ,Fedora) to build,query,install,update,verify and erase individual software packages.RPM package also contains detailed information about the package version modification,release date,depends on etc.Local rpm package database is stored at /var/lib/rpm ,contains information about file attributes and package dependencies.
Below I have listed some RPM commands used on day to day basis in Linux. 

RPM file format: name-version-release.architecture.rpm

a) Command to install rpm package

# rpm  –ivh  package name

-i : install a package
-v : verbose output
-h: print hash marks as the package archive is unpacked.

b) Command to install package without dependency

# rpm  -ivh   package name  - - nodeps

c) Command to install package with dependency

#rpm -ivh package name  - - aid

d) Command to install a package forcefully

# rpm  -ivh  package name  - - force

e) Command to upgrade a package

# rpm –Uvh  package name

While upgrading ,original package(with exception of configuration files ) on the system will be removed and new packages will be installed. Configuration files from the original installation are saved with a “.rpmsave” extension.

f) Command to view all installed packages

# rpm –qa | less

g) Command to uninstall a rpm

# rpm –e package name

# rpm –ev  - - nodeps package name

h) Command to check whether a particular rpm(vsftpd) is installed or not

#rpm –qa vsftpd*

i) Command to view document file for a particular rpm

#rpm –qd package name

j) Command to view configuration file for a particular rpm

# rpm –qc package name

k) Command to find the package name for a particular file name

# rpm –qf  path to file

l) Command to view the information about the installed rpm package

# rpm –qi package name

m) Command to view the list of recently installed rpm

# rpm -qa  --last | less

n) Command  to view the dependency of rpm before installation

# rpm –qRp  package name

o) Command to verify a installed package against rpm database

# rpm  -Vp package name

To verify all packages installed

# rpm –Va

p) Command to import RPM GPG keys

# rpm  - - import  /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6 [Press tab to complete]

q) Command to view all RPM imported GPG keys

# rpm –qa  gpg-pubkey*

r) Command to rebuild corrupted RPM database

#cd /var/lib/rpm
#rm __db*
#rpm –rebuilddb

# /usr/lib/rpm/rpmdb_verify Packages