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9. Software Installation on CentOS 7

#CentOS7学习笔记208
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To install software on CentOS using yum, first mount the CD-ROM, configure yum to use local sources, install vim tool, install GNOME desktop environment, set default runlevel to graphical, install libreoffice, and optionally try installing KDE desktop environment. Use "yum grouplist" to view available software packages.

Software Installation on CentOS (yum installation)#

Prerequisite: Mount the CD first#

mount /dev/cdrom /media/cdrom

  1. Configure yum installation environment (local source)

    Modify /etc/yum.repos.d/CentOS-Media.repo

    Change enabled=0 to enabled=1 0 means disabled, 1 means enabled

    Explanation of other parameters#

     1. `gpgcheck=1` integrity check
 2. `baseurl=file:///media/cdrom` file address `file://` indicates local path
 3. `[source name]`
 4. `name=source name`

  2. Install vim tool

    yum -y install vim (software name)

  3. Install CentOS desktop environment (Gnome)

    yum -y groupinstall "X Windows System"
yum -y groupinstall "GNOME Desktop"

  4. Set default run level by checking /etc/inittab file

    systemctl set-default graphical.target

    After setting, restart: init 6

  5. Install libreoffice

    yum -y install libreoffice*

Additional experiment: Try installing the kde desktop environment

Check software packages with yum grouplist

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