RPM (Redhat Package Manager) configure/Installation in RHEL 7

RPM (Redhat Package Manager) package files  are  named using a  combination of the package name -version -release . architecture: 

[root@rhel7 Packages]# ls -lrt httpd*
-r--r--r--.  75 root root 1211944 Apr  1  2014 httpd-2.4.6-17.el7.x86_64.rpm

•  NAME is one or more words describing the contents (httpd). 

•  VERSION is the version number of the original software (2.4.6). 

•  RELEASE  is  the re lease number of  the package based on that version, and  is  set by the 

packager, who might not be the original software developer (17.e l7). 

•  ARCH  is the processor architecture the package was  compiled  to run on.  "noarch" indicates 

that  this package's contents are  not architecture-specific (x86_64). 

Install a specific package from specific location

[root@rhel7 Packages]#rpm -ivh httpd-2.4.6-17.el7.x86_64.rpm

Here 

i-Install

v-Print verbose information - normally routine progress messages will be displayed.

h-hash or progress

Install a specific package with no dependencies 

[root@rhel7 Packages]# rpm -ivh httpd-2.4.6-17.el7.x86_64.rpm

warning: httpd-2.4.6-17.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID fd431d51: NOKEY

error: Failed dependencies:

        httpd-tools = 2.4.6-17.el7 is needed by httpd-2.4.6-17.el7.x86_64

[root@rhel7 Packages]# man rpm

[root@rhel7 Packages]# rpm -ivh httpd-2.4.6-17.el7.x86_64.rpm --nodeps

warning: httpd-2.4.6-17.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID fd431d51: NOKEY

Preparing...                          ################################# [100%]

Updating / installing...

   1:httpd-2.4.6-17.el7               ################################# [100%]

[root@rhel7 Packages]#

Upgrade existing package

[root@rhel7 Packages]# rpm -Uvh httpd-2.4.6-17.el7.x86_64.rpm

Remove Installed Packages

First query that specific package installed or not ??

[root@rhel7 Packages]# rpm -qa | grep httpd

libmicrohttpd-0.9.33-2.el7.x86_64

httpd-2.4.6-17.el7.x86_64

Remove specific package using -e (erase) option

[root@rhel7 Packages]# rpm -ev httpd-2.4.6-17.el7.x86_64

Preparing packages...

httpd-2.4.6-17.el7.x86_64

Now check the package is exist or not??

[root@rhel7 Packages]# rpm -qa | grep httpd

libmicrohttpd-0.9.33-2.el7.x86_64

[root@rhel7 Packages]#

Query which package related to specific file

 

[root@rhel7 Packages]# rpm -qf /etc/crontab

crontabs-1.11-6.20121102git.el7.noarch

[root@rhel7 Packages]#

Search any package installed or not ??

[root@rhel7 Packages]# rpm -qa | grep http

libmicrohttpd-0.9.33-2.el7.x86_64