Red Hat System Administration I

Search for a specific package.

1. Attempt to run the command gnuplot. You should find that it is not installed.

   [root@serverX ~]# gnuplot
   bash: gnuplot: command not found...
   

2. Search for plotting packages.

   [root@serverX ~]# yum search plot
   Loaded plugins: langpacks
   ======================= N/S matched: plot =======================
   emacs-gnuplot.noarch : Emacs bindings for the gnuplot main application
   gnuplot.x86_64 : A program for plotting mathematical expressions and data
   gnuplot-common.x86_64 : The common gnuplot parts
   python-matplotlib.x86_64 : Python 2D plotting library
   texlive-pst-plot.noarch : Plot data using PSTricks
   
     Name and summary matches only, use "search all" for everything.
   

3. Find out more information about the gnuplot package.

   [root@serverX ~]# yum info gnuplot
   Name       : gnuplot
   Arch       : x86_64
   ...

Install the gnuplot package.

[root@serverX ~]# yum install -y gnuplot
...
Dependencies Resolved

=============================================================================
 Package               Arch          Version          Repository       Size
=============================================================================
Installing:
 gnuplot               x86_64        4.6.2-3.el7       rhel_dvd        645 k
Installing for dependencies:
 gnuplot-common        x86_64        4.6.2-3.el7       rhel_dvd        595 k

Transaction Summary
=============================================================================
Install  1 Package (+1 Dependent package)
...

Remove packages.

1. Attempt to remove the gnuplot package, but say no. How many packages would be removed?

   [root@serverX ~]# yum remove gnuplot
   ...
   Removing:
    gnuplot       x86_64       4.6.2-3.el7       @rhel_dvd       1.5 M
   
   Transaction Summary
   =======================================================================
   Remove  1 Package
   
   Installed size: 1.5 M
   Is this ok [y/N]: n

2. Attempt to remove the gnuplot-common package, but say no. How many packages would be removed?

   [root@serverX ~]# yum remove gnuplot-common
   ...
   Removing:
    gnuplot-common      x86_64      4.6.2-3.el7      @rhel_dvd      1.4 M
   Removing for dependencies:
    gnuplot             x86_64      4.6.2-3.el7      @rhel_dvd      1.5 M
   
   Transaction Summary
   ========================================================================
   Remove  1 Package (+1 Dependent package)
   
   Installed size: 2.9 M
   
   Is this ok [y/N]: n

Gather information about the "Compatibility Libraries" component group and install it on serverX.

1. List all available component groups.

   [root@serverX ~]# yum grouplist

2. Find out more information about the Compatibility Libraries component group, including a list of included packages.

   [root@serverX ~]# yum groupinfo "Compatibility Libraries"
   Loaded plugins: langpacks
   
   Group: Compatibility Libraries
    Group-Id: compat-libraries
    Description: Compatibility libraries for applications built on previous versions of Red Hat Enterprise Linux.
    Mandatory Packages:
      +compat-db47
      +compat-glibc
      +compat-libcap1
      +compat-libf2c-34
      +compat-libgfortran-41
      +compat-libtiff3
      +compat-openldap
      +libpng12
      +openssl098e
   

3. Install the Compatibility Libraries component group.

   [root@serverX ~]# yum groupinstall "Compatibility Libraries"
   Loaded plugins: langpacks
   Resolving Dependencies
   --> Running transaction check
   ---> Package compat-db47.x86_64 0:4.7.25-27.el7 will be installed
   --> Processing Dependency: compat-db-headers = 4.7.25-27.el7 for package: compat-db47-4.7.25-27.el7.x86_64
   ...
   Dependencies Resolved
   
   ======================================================================
    Package                    Arch        Version             Repository
   ======================================================================
   Installing for group install "Compatibility Libraries":
    compat-db47                x86_64      4.7.25-27.el7       rhel_dvd  
    libpng12                   x86_64      1.2.50-6.el7        rhel_dvd  
   ...
   Installing for dependencies:
    compat-db-headers          noarch      4.7.25-27.el7       rhel_dvd  
   ...
   
   Transaction Summary
   ======================================================================
   Install  9 Packages (+3 Dependent packages)
   
   Total download size: 5.5 M
   Installed size: 21 M
   Is this ok [y/d/N]: y
   ...
   Installed:
     compat-db47.x86_64 0:4.7.25-27.el7
     compat-glibc.x86_64 1:2.12-4.el7
   ...
   
   Dependency Installed:
     compat-db-headers.noarch 0:4.7.25-27.el7                                      
     compat-glibc-headers.x86_64 1:2.12-4.el7 
   
   Complete!
   

Explore the history and undo options of yum.

1. Display recent yum history.

   [root@serverX ~]# yum history
   Loaded plugins: langpacks
   ID     | Login user        | Date and time    | Action(s)  | Altered
   ------------------------------------------------------------------------
        3 | root <root>       | 2014-06-05 09:33 | Install    |   12   
        2 | root <root>       | 2014-06-05 09:30 | Install    |    2   
        1 | System <unset>    | 2014-06-02 20:27 | Install    | 1112 EE
   history list
   

2. Confirm that the last transaction is the group installation.

   [root@serverX ~]# yum history info 3
   Loaded plugins: langpacks
   Transaction ID : 3
   Begin time     : Thu Jun  5 09:33:19 2014
   Begin rpmdb    : 1210:7c6b529424621773d5fe147315a53d558f726814
   End time       :            09:33:40 2014 (21 seconds)
   End rpmdb      : 1222:c283bc776b18b9578b87cdec68853f49b31ca0cc
   User           : root <root>
   Return-Code    : Success
   Command Line   : groupinstall Compatibility Libraries
   Transaction performed with:
       Installed     rpm-4.11.1-16.el7.x86_64 installed
       Installed     yum-3.4.3-117.el7.noarch installed
   Packages Altered:
       Dep-Install compat-db-headers-4.7.25-27.el7.noarch    @rhel_dvd
       Install     compat-db47-4.7.25-27.el7.x86_64          @rhel_dvd
   ...
   history info

3. Use undo options to remove the last set of packages installed.

   [root@serverX ~]# yum history undo 3