Join Kevin Skoglund for an in-depth discussion in this video grep: Searching for matching expressions, part of Unix for Mac OS X Users.
In this chapter we're going to take a look at some of the most useful and…powerful Unix commands.…Up until now we've really been covering the fundamentals and getting familiar…with Unix, but now we are at the point where we can start doing some serious…work, and the most powerful tool in the Unix toolbox by far is grep.…Grep is a powerful way for us to search for text which matches patterns that we…specify, and we aren't just talking about searching for simple text strings.…We can define complex matching patterns by using regular expressions, and regular…expression are actually part of how grep gets its name.…
Grep stands for Global Regular Expression Print.…If you think back to the movie where we talked about Unix text editors, I told…you that the earliest Unix text editor was called ed or Ed, and if you were…working inside the ed text editor and you wanted to search for something, the…way you did it was by typing a g, then a forward slash and then a regular…expression that described what you were going to search for, another forward…
- 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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