Join Kevin Skoglund for an in-depth discussion in this video Logout file, part of Unix for Mac OS X Users.
So far all of our configurations for our Unix working environment have been…done in either the .bash_profile configuration file, or in .bashrc and that's…typically the two places that you'll locate them, because those are the files…that get read in when you first start a new session and they set things up the way you like.…But there is one other configuration file that I don't want us to forget about,…which is the logout file. That's in bash_logout, and anything that's in there will…get executed whenever we log out of Unix. Let's take a look at how it works.…Let's create a new file. You see I don't have a bash_logout file right now,…So let's do nano .bash_logout and in it let's just put echo "See ya later!",…which is nice and simple.…
That's the command that we get run whenever we log out.…Now on a Mac, let me just show you first of all that there is the file .bash_logout.…Now on a Mac, it's not that useful because if we close this window, if we just…go up here and close it, well then we'll never see that echo statement.…
- 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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