Linux Command Line and BASH Scripting

In this unit we’ll start by looking at the file structure in Linux and the concept of mount points instead of drive letters.

Next we’ll learn how to navigate the file structure in Linux while also learning about creating, deleting, copying, moving, and viewing files from the command line.

We’ll then look at the grep and sed commands that are used to find text in files quickly when using the terminal.

Well also look at some more advanced features of the powerful sed command when used with regular expressions.

Finally in this unit we’ll learn about the vim text editor. Using command line text editors is a vital skill for anyone using the terminal or writing BASH scripts.

The Linux file structure can take a little getting used to if you’re  from a Microsoft background. The top of the file structure is the root  directory represented by a forward slash.

You can jump to topics by using the times listed below:

0:04      Navigating the Linux file structure

3:06      Locating and Identifying File Types

3:56      Creating and removing files and directories

7:58      Copying and moving files and directories

11:38      Viewing Files in the Terminal

You can jump to topics by using the times listed below:

0.04      Using grep to search in files

1:31      Using sed to search in files

You can jump to topics by using the times listed below:

0.56      The caret Symbol ^

1:42      The dollar Symbol $

2:31      The dot Symbol .

3:51      Escaping Characters \

4:37      The asterisk Symbol *

5:57      The OR Symbol |

6:31      Character Classes [ ]

You can jump to topics by using the times listed below:

0:50      Normal mode and Insert mode

2:45      Working with vim

3:53      Find and Replace in vim

In this unit we'll look at security in the Linux system.

First we'll setup some users and groups which will be used to learn about file and directory permissions.

Finally we'll look at how files and directories can be shared by controlling their permissions.

You can jump to topics by using the times listed below:

1:24      Add a User

3:29      Modify a User

4:03      Delete a User

4:29      Creating Groups

5:43      Adding users to Groups

You can jump to topics by using the times listed below:

1:12      Changing Groups

1:56      Understanding File Permissions

3:38      Changing File Permissions: Symbolic Notation

5:21      Changing File Permissions: Octal Notation

8:18      Setting Permissions to Share Files in groups

This unit covers many programming concepts and we begin by learning about scripting basics. This includes using variables, arrays, parameters and getting user input.

Next, we look at how we can control the flow of a script based on conditions using logic like if then statements and loops including string, numeric and file comparisons.

Then we learn about sending data to commands and files. This includes redirecting data and getting input from files.

Lastly, we begin writing and using functions to make scripts easier to maintain, understand and reuse.

You can jump to topics by using the times listed below:

0:23      Creating Scripts

2:41      Variables

5:32      Arrays

6:59      Using Parameters in scripts

9:28      Getting User Input

You can jump to topics by using the times listed below:

2:31      The IF Statement

4:08      The IF Statement with ELSE and ELIF

5:34      The FOR loop

6:25      The CASE statement

9:22      The WHILE Loop

14:21      The BASH Calculator

You can jump to topics by using the times listed below:

0:24      Redirect and Append

1:53      Redirecting using file descriptors

3:30      Piping Data

You can jump to topics by using the times listed below:

0:55      Creating Functions

3:35      Separating Logic in Functions

5:00      More Functions

8:26      Making Scripts User friendly

In this last unit we’ll learn about installing and managing software on an Ubuntu system and create a script to automate this process.

Next we’ll use cron to schedule scripts so that they run automatically at regular intervals and combine this with archiving and compressing files to create backups of files and directories.

The last script in this unit will create automated reports that can be used to monitor disk usage on a Linux system.

You can jump to topics by using the times listed below:

0:49      The Advanced Package Tool (apt)

10:44      Getting Information about Software

11:57      Testing the Script

You can jump to topics by using the times listed below:

0:32      Setting up the Script with config files

3:12      Scheduling using cron

6:59      Archiving and Compressing Files

10:26      Testing the Script

12:01      Restoring Files

You can jump to topics by using the times listed below:

0:36      Setting up the Script

4:19      The df and du Commands

8:21      Testing the Script

Well done for finishing this course. I hope to see you in another course soon.