Users in Linux

• In Linux when we connect via remote session there are no visual interfaces
• Connect to the linux instance

ip: 20.55.19.106
username: experiment
password: experiment

• The command pattern is ssh username@ipaddress
• To create a user adduser <name>
  
• In Linux if you want to elevate your previleges add sudo infront of your command sudo adduser <name>
  
• the user with which you are executing sudo needs to have part of sudoers group

Shell and Kernel

Distribution

• Linux Kernel is the Core Operating System in Linux
• Some Organizations like Canonical, SUSE, RedHat etc take the linux kernel add some more applications for better experience. These are referred as distributions.
• Examples of Distribution
  • Redhat
  • Centos
  • Ubuntu
  • Fedora
  • Kali
  • Debian
  • Amazon Linux

Application Installation

• Application Installation will copy files into the system.
• To do this we have 3 ways
  • Manually download the files (generally as zip or tar) extract and use
  • Download the installer file/executable and run that
  • Using Package Managers
    • Mac: brew
    • Windows: choco
    • Linux:
      • Ubuntu: apt
      • Redhat: yum