Join Kevin Skoglund for an in-depth discussion in this video Viewing processes, part of Unix for Mac OS X Users.
Over the course of the next few movies I want to take a look at some Unix…commands for managing processes.…Think back to Chapter 1 where we talked about the difference between the…kernel and the shell.…In our case the shell is bash.…Whenever we run a command inside our shell, a file executes and it…communicates with the kernel.…And essentially it says to the kernel, "Hey kernel!…There are some things I need to accomplish here.…Can you help me out?"…The kernel sets aside some memory space and starts a process running in it.…Then whenever there's output from that process, it returns it back to the…shell for us to see.…And whenever the process is finally done, the kernel then closes it out and…reclaims that memory space so that it can be used by other processes.…
That's what the kernel does.…it manages the processes for us.…Now we can have processes that are really short, like when we run the echo command.…That's a really, really short process. …It starts, it does its thing, and then it's over.…We could also have longer running processes.…
- 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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