Linux Bootcamp Series – Installing Software – 21/Dec/2019

Installing software/applications on Linux

  • Manual
  • Debian/Rpm Package
  • Apt/Yum

File Permissions

  • Any file has three permissions
    • Read => 4
    • Write => 2
    • Execute => 1
  • If you want to give
only Read => 4
Read and Write => 4+2 => 6
Read, Write and Execute => 4+2+1 => 7
  • Any application should have execute permissions

  • File Permission on Linux are generally in the following format <ownerpermissions><grouppermission><otherspermission> examples:
-rwxrw-r-- (RWX => owner, RW=> group, read for others)
  • Exercise-1: Find the permissions of the files in following folders using command (ls -la <folderpath>)

    • /usr/share
    • /tmp
    • /var
    • /etc
  • Exercise-2: Create a shell file with the following content and give the execute permissions to this file using chmod 777 <filename>

echo hello

Manual installation of Software

  • Exercise: Lets install maven

    • Installation
    # Ensure Java is installed
    Download maven from
    tar -xvzf apache-maven-3.6.3-bin.tar.gz
    # in the folder extracted 
    cd bin
    ls -la 
    # check mvn permissions
    • Configuration:
    mvn --version
    # This command fails because mvn executable is not part of ENV Variable called as PATH
    export PATH="/home/ubuntu/apache-maven-3.6.3/bin:$PATH"
    mvn --version
  • Exercise-2: Install Ruby

     tar -xvzf ruby-2.6.5.tar.gz
    sudo make install

Debian Packages and RPM Packages

  • Debian Package:
    • Can be used on all debian distributions
    dpkg -i <debian package>
    • Example: Install chefdk from here
    sudo dpkg -i sudo dpkg -i chefdk_4.6.35-1_amd64.deb
  • RPM Package:
    • Can be used by os from RedHat family
    rpm -ivh
    • Example: Try installing chefdk on Centos7

APT or YUM based installations

  • In your linux machines you configure apt/yum repositories
  • when the commands such as apt install <package name> or yum install <package name> the package name is searched in the configured repositories.
  • This package will be downloaded and installed on the machines using references from repositories.
  • If the Repository is present in your organization, which only allows you to install some packages, These kind of implementations are called as Satellite Servers.
  • Lets examine Jenkins installation on Ubuntu. Refer Here
wget -q -O - | sudo apt-key add -
# Add the following line to /etc/apt/sources.list
sudo apt-get update
sudo apt-get install jenkins -y
  • Exercise: Yum Repository configuration for installing logstash from here
  • Exercise: Apt Repository configuration for installing logstash from here

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