RPM Package Manager on Linux RHEL/CentOS 6

  Rpm is the Redhat Package Management system. By using rpm utility the user can instal new packages or upgrade and can also remove existing packages.
Pattern:

 vsftpd-2.0.6-0.el6.i386.rpm
Here vsftpd is the name of package & 2.0.6-0.el6 is the version of package & i386 is the type of architecture of the package & .rpm is the extension.

To install rpm:
 
#rpm --force --aid
 
options:

·                          -i  =  install

·                         -v  =  verbose

·                         -h  =  to display progress in hashes 

·                       --force = to install forcefully 

·                       --aid    = to install packages with dependencies

ex: rpm  -ivh  nfs-utils   --force  --aid
      rpm  -ivh  nfs-utils-lib  --force  --aid

To upgrade:

#rpm
 
options: 

·                          -U  =  upgrade

·                          -v  =  verbose

·                          -h  =  to display in hashes

eg: rpm -Uvh  nfs-utils
      rpm -Uvh  nfs-utils-lib

 To remove an rpm:
 
#rpm --nodeps
 
options:
    -e  = to remove package from the system
   --nodeps =  remove without dependencies
 
eg: # rpm -e nfs-utils   --nodeps

To query rpm package:
 
 # rpm   
 
options:

·                          -q    =   to query the availability of installed package

·                          -qa  =  queries all installed rpm's in o/s

·                          -qc  =  list only configuration files stored in queried rpm

·                          -qd  =  list only doc files stored in queried rpm

·                          -qi   =  displays complete information about queried rpm

·                          -qs  =  displays status of files in queried rpm

·                          -ql   =  displays files related to queried rpm

·                          -qf   =  query find of the package

Eg :- To display information of Package
                 # rpm -qi nfs-utils 

Note:  1. RPM database is maintained under - /usr/lib/rpm  directory

            2. All your installed rpm's log is under - /root/install.log

           
            3. To install Packages in GUI Mode, enter this command
                            # system-config-packages &

To get rpm's from server:

#mount 192.168.0.254:/var/ftp/pub   /mnt  (Mount point from 254 server to local system)
#cd /mnt

#cd Server    (In mnt directory Server folder is there.)
#rpm -ivh --force --aid

To get rpm's from CD/DVD:

place rhel-5 or 6 dvd in  cd-rom
#mount /dev/cdrom    /mnt
#cd /mnt
#cd Server
#rpm -ivh --force --aid