Join Kevin Skoglund for an in-depth discussion in this video diff: Comparing files, part of Unix for Mac OS X Users.
In this movie we're going to take a look at a Unix tool called DIFF, which is…useful for comparing two files.…Imagine that a client sends you revisions to a text document.…You still have the original document but you can't tell where the client changed.…You could put the two documents side-by- side and then scan each one looking for…the differences then every time you find a difference you could take note of it.…That's exactly what DIFF does for you, but much faster and with greater…precision than you could.…Using DIFF is easy.…Notice that I am inside my user directory and inside unix_files and we're going…to be working with two files that I've added to this directory.…
The first one is original_file.txt, the other one is revised_file.txt.…Both of these are included in the Exercise Files but they're also easy for…you to create yourself.…The first one just has several lines that say delete, several lines that say…change, and several lines that say append.…And then on the far left side I've included the line numbers for reference.…
- 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
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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