RPM command explained in CentOS/RHEL/Fedora

RPM: Redhat Package Manager

RPM command is used for installing, uninstalling, upgrading, querying, listing, and checking RPM packages on your Linux system.

RPM command syntax

Command option argument

Example:

rpm -qa package_name

RPM help command

rpm --help

or

man rpm

Options are:

i- Install a package

v- Verbose

h-  Hash mode

q - Query

a-  all

U-  Upgrade a package

-e- Erase package

-ivh – Install rpm package

-ivh –nodeps – Install rpm package without dependencies

-Uvh – Upgrade a rpm package

-ev --nodeps - Uninstall package without checking of dependency

-qi - Display information about package, version

-qf -Query package name for a file(/etc/passwd)

-qc - Query configuraiton name of package

-ql – List all the files of a package

-qd - Query doc file

-qa --last              - Query all recently installed RPMs package

-qR  -  Find out what dependencies a rpm file has

Download rpm package from Website http://rpmfind.net

1. How to find out what are the packages are installed in system

#rpm -qa

#rpm -qa bash

or,

#rpm -qa | grep bash

#rpm -qa | less

2. How to install a package in system

#rpm -qa vsftpd

#rpm -ivh package name

Example:

#rpm -ivh vsftpd

or,

#rpm -Uvh vsftpd

#rpm -qa vsftpd

How to uninstall/remove/erase a package

#rpm -e vsftpd

How to find what package a file belongs to

# rpm -qf /etc/passwd

Verifying all the RPM installed Packages

# rpm -Va

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