Learn Linux Administration Through Practical Examples

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Linux Tips: First steps into becoming a successful Linux server administrator by learning different Linux distributions

1 - System Startup

2 - Introduction

3 - Understanding the runlevels and targets

4 - Current and default runlevel

5 - Default runlevel Ubuntu init

6 - Listing services in certain runlevels

7 - EnableDisable a process from starting at boot init

8 - Default target systemd

9 - Dealing with processes systemd

9 - Exercise1-System-startup.pdf

2 - Disk Management

10 - What is LVM

11 - Steps on how to create a volume group

12 - Steps on how to extend an existing volume group

13 - Steps on how to decrease disk space by reducing the volume group

14 - Add virtual disk in VMware Workstation Player

15 - Add virtual disk in Oracle VM VirtualBox

16 - Create volume group and logical volume

17 - Extend existing volume group and logical volume

18 - Reduce logical volume

19 - Exercise2-DiskManagement.pdf

19 - Resize filesystem and logical volume

3 - Network Security

20 - Introduction

21 - Change the hostname

22 - DNS nameservers

23 - Resolve queries locally with etchosts

24 - Determine the order for DNS queries

25 - Exercise3.1-NetworkConfiguration.pdf

25 - Setup a static ip DebianUbuntu

26 - Setup alias ip

27 - ip vs ifconfig commands

28 - Adding routes

29 - Network configuration for CentOSRHEL

30 - Connect remotely with SSH

30 - Exercise3.2Generatesshkeys.pdf

31 - Servers fingerprints

32 - Setup firewalls with iptables

33 - Exercise3.3-Setupiptables.pdf

33 - Iptablespersistent

4 - Network Troubleshooting

34 - Introduction

35 - Ping command

36 - What happens behind the ping command

37 - Traceroute command

38 - Netstat ss commands

39 - Capturing network traffic with tcpdump

40 - Deciphering the output of tcpdump

40 - Exercise4.1-Capturepacketswithtcpdump.pdf

5 - System Troubleshooting

41 - Introduction

42 - Swap Swappiness

43 - Identify the systems resources

44 - Check systems resources usage

45 - Keep an eye on something the watch command

46 - Realtime view tools

47 - Get historical data

48 - Check running processes

49 - Check open files

49 - Exercise5.1-SystemResources.pdf

50 - Log messages and rsyslogd daemon

51 - Checking log files

52 - Rotate logs

53 - Schedule jobs with at

54 - Exercise5.2-Schedulejobs.pdf

54 - Schedule jobs with cron

55 - Anacron

6 - Network File System

56 - NFS Introduction

57 - Exercise6-NetworkFileSystem.pdf

57 - Setup NFS

58 - Mount filesystem permanently

7 - User Management

5 - Final Quiz.html

59 - Adding users

60 - Manage groups delete users

61 - Lock accounts

62 - Limit disk space for users with quota

63 - Disk limit with quota practical example

8 - BONUS Lectures

64 - Change root password.html

64 - changerootpass.pdf

65 - View configuration files without commented lines.html

66 - 20-QA-Interview.pdf

66 - Interview questions.html

66 - Interview-Q-A-2.pdf

67 - Distro Upgrade Debian 8 to Debian 9.html

67 - Distro-upgrade.pdf

68 - Bonus Lecture Congrats.html

68 - Please-use-incognito-window-for-the-link-below.pdf

Tips Tricks

1 - TipTricksCommands.pdf

1 - Tips Tricks

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