Chapter 1. Introduction

Course Introduction

• Controlling system initialization and services
• Managing disk partitions and filesystems
• Network configuration
• Establishing good security and backup practices
• Monitoring
• Troubleshooting
• Rescuing the system from failure
• Software installation and upgrading

Distributions

• Red Hat Enterprise Linux
  • RHEL
    • CentOS
      • Its kind of a clone of RHEL
    • Scientific OS
    • Fedora
      • Child from RHEL, has to many cutting edge changes suchs as the kernel version to be considered for Enterprise environment
• SUSE
  • openSUSE
• Debian

Things not covered that are important to know

• Text Editors (vim, emacs, nano, gedit)
• Manipulating text (sed, grep, awk, cut, paste, tail, head, etc )
• File utilities (find, locate, file, etc )
• Printing (configuring printers, managing print jobs)
• Graphical interfaces and their administration
• Bash shell scripting
• System installation

LAB 1.1

• Configuring the System for sudo
  1. Get into the system as root executing this comand

     • user@localhost sudoers.d]$ su

  2. Create a file within /etc/sudoers.d with the name of the user to be granted sudoer permission

     • user@localhost sudoers.d]$ touch username

  3. Write this code on such file, (Sample with a user called  username)

     • username ALL=(ALL) ALL

  4. Change the permission of such file

     • chmod 400 /etc/sudoers.d/student