Software Package Updates Lab

1. Install and Update Software with `yum`

In this lab, you install and remove packages and package groups.

Attempt to run the command gnuplot. You should find that it is not installed.
```
[root@server1 ~]# gnuplot
bash:gnuplot: command not found...
```

Search for plotting packages.

[root@server1 ~]# 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.

Find out more information about the gnuplot package.

[root@server1 ~]# yum info gnuplot
Name       :gnuplot
Arch       :x86_64
...

Install the gnuplot package.

[root@server1 ~]# 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.

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

[root@server1 ~]# 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

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

[root@server1 ~]# 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 server1.example.com.

List all available component groups.
```
[root@server1 ~]# yum grouplist
```

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

[root@server1 ~]# 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

Install the Compatibility Libraries component group.

[root@server1 ~]# yum groupinstall "Compatibility Libraries"
Loaded plugins:langpacks
Resolving Dependencies
--> Running transaction check
---> Package compat-db47.x86_64 0:.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:.7.25-27.el7
  compat-glibc.x86_64 1:.12-4.el7
...

Dependency Installed:
  compat-db-headers.noarch 0:.7.25-27.el7
  compat-glibc-headers.x86_64 1:.12-4.el7

Complete!

Explore the history and undo options of yum.

Display recent yum history.

[root@server1 ~]# yum history
Loaded plugins:langpacks
ID     | Login user        | Date and time    | Action(s)  | Altered
-----------------------------------------------------------------------
     3 | root <root>       | 2014-06-05 09:3 | Install    |   12
     2 | root <root>       | 2014-06-05 09:0 | Install    |    2
     1 | System <unset>    | 2014-06-02 20:7 | Install    | 1112 EE
history list

Confirm that the last transaction is the group installation. Replace 1 in the following command with the highest number in the ID column of the previous command output.

[root@server1 ~]# yum history info 1
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

Use undo options to remove the last set of packages installed. Replace X with the same number as before.
```
[root@server1 ~]# yum history undo 1
```

Software Package Updates Lab

1. Install and Update Software with yum

1. Install and Update Software with `yum`