Join Kevin Skoglund for an in-depth discussion in this video The root user, part of Unix for Mac OS X Users.
So far in this chapter we've been talking about user accounts and user privileges.…The things that a user is or is not allowed to access on the Unix file system.…Now I like us to talk about a special kind of Unix account, which is the root user.…The root user is a super user account that can do absolutely anything on the Unix system.…It can open any file, it can run any program, it can change any permissions.…It is an all-powerful user that's not bound by the normal user permissions that…we've been discussing so far.…So the root user can see Lynda's photos and they can read Kevin's documents.…
In fact, they can even delete Kevin and Lynda's accounts.…When Unix is first installed on a computer, it's this root user that exists…before you've even created the user accounts.…So as the root user, you would first create Kevin's account, give him a…password, and then from then on we can log in as Kevin.…Now in Mac OS X, you don't see that process happen, because the Mac OS X…installer does it for you.…
- 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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