Join Kevin Skoglund for an in-depth discussion in this video Shut down, reboot, and sleep, part of Unix for Mac OS X Users.
In this movie I'm going to show you how you can shut down, reboot, and sleep your…computer from the Unix command line.…Not only can we perform these actions just like we can in the Finder, but from the…command line we get an extra cool bonus we can schedule these actions.…Now before we get started I want you to proceed carefully. I don't want to be…responsible if you put your computer to sleep or reboot and you lose data in a…file that you're in the process of editing.…So take a moment and make sure that all your files are saved and everything…so that if you did accidentally trigger a shutdown you wouldn't lose anything important.…Now the command that we're going to use for all three of these, for shut down,…reboot and sleep, is going to be the shutdown command. That may not seem…intuitive, but that's the command that we use for all three of them and in order…to use the shutdown command we always have to use it with sudo.…
So sudo shutdown and then immediately after we have to specify one of three…
- 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
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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