Join Kevin Skoglund for an in-depth discussion in this video Directing output to a file, part of Unix for Mac OS X Users.
In the last movie I told you that the standard output in Unix is going to be to…the screen and we can see that.…Notice that I'm inside my user directory, inside Unix files and I'm just…going to type sort and fruit.txt. This is the command we did before, just sorts…this list of fruit.…Now I didn't actually change the file itself, all right. Sort just took it and…the output of that command was to my screen.…Not back to that file. Just simply output it to the screen and that's what…we're seeing there.…What we want do now is change the output.…We want it to go somewhere else.…
The way we do that as we say sort fruit.txt and then after that we use the…greater than sign or an arrow pointing to the right. Essentially that's the way…we're directing the output and we want to direct it to a filename and the file…doesn't have to exist already.…We're going to create a new file, sorted_fruit.txt.…So that's it. That's all there there is to it.…We simply say our instead of sending this information to the screen direct it…
- 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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