Unlock the powerful capabilities of Unix that underlie Mac OS X, teaching how to use command-line syntax to perform common tasks such as file management, data entry, and text manipulation.
- [Voiceover] Welcome to Unix for Mac OS X users. My name is Kevin Skoglund, and as a web developer, I probably spend as much time working in Unix as I do writing code. In this course, we're going to learn to use the powerful Unix operating system that's built-in to Mac OS X. I will walk you through the fundamental concepts used in Unix, we will discover the Unix file system. And learn to create, find, copy, and delete files and directories all from the command line. We will see how user accounts function in a multi-user environment. And learn how to manage file ownership in user permissions. I will also cover dozens of useful Unix commands.
Everything from simple calculators to tools that monitor and manage every process running on your computer. And I'll introduce you to some Power User techniques that will allow you to find, alter, or capture almost any text or system information. Now, most of what we cover will be useful in any Unix environment. Whether it's Mac, Lenox, or something else. But in the final chapter, I'll demonstrate many useful Mac only commands and techniques that can speed up your work flow and give you more power and control over your Mac. It doesn't matter if you're a complete beginner or have some prior experience, we're going to cover all the fundamentals you need to become comfortable working from the Unix command line.
So let's get started learning Unix.
- Moving around the file system
- Creating and reading files
- Copying, moving, renaming, and deleting files and directories
- Creating hard links and symbolic links
- Understanding user identity, file ownership, and sudo
- Setting file permissions with alpha and octal notation
- Changing the PATH variable
- Using the command history
- Directing input and output
- Configuring the Unix working environment
- Searching and replacing using grep and regular expressions
- Manipulating text with tr, sed, and cut
- Integrating with the Finder, Spotlight, and AppleScript
Skill Level Beginner
Q: The exercise files for the following movies appear to be broken:
Is there something wrong with them?
These exercises include one or more "dot files", whose file names start with a period. These files are normally hidden from view by the Finder. So that they would show up in the Finder, the period has been removed from the file names. Additionally, "_example" has been added at the end of the file name to make it clear that the file will not work as-is.
To make the dot files usable, either:
1) Open the file in a text editor to view its contents. Note that it may not be possible to double-click the file to open it because there is no file extension (such as .txt).
2) Resave the file under a new name (usually by choosing File > Save As), adding a "." to the beginning of the file name and removing "_example" from the end.
1) Copy and rename the file from the Unix command line using the techniques discussed in this course. Rename the file by adding a "." to the start and removing "_example" from the end. Include the "-i" option to prevent overwriting an existing file unexpectedly.
Example: cp -i ~/Desktop/Exercise\ Files/Chapter_07/07_02_files/bashrc_example ~/.bashrc
The instructor uses the UNIX program 'units' to convert 72° Fahrenheit to degrees Celsius. The returned value of 40 is incorrect. The correct result should be 22°C. What's the reason for this discrepancy?
The problem is that units does the 5/9 calculation but does not have the ability to subtract 32. So you'll need to subtract (or add) the 32 degrees yourself.
1. Introduction to Unix
2. Filesystem Basics
3. Working with Files and Directories
4. Ownership and Permissions
5. Commands and Programs
6. Directing Input and Output
7. Configuring Your Working Environment
8. Unix Power Tools
9. Useful Mac-Only Commands and Techniques
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