2015
Lynda
David D. Levine
2:01
English
SED is the one of the original command line tools for parsing and transforming data on Unix, Linux, and Macintosh machines. David D. Levine helps you unlock the power of SED's compact syntax in these lessons, which cover extracting, transforming, and manipulating data in files and data streams. He reviews the basic commands, including one you'll never want to forget, and shows how to work with regular expressions. The course also covers SED's more advanced programming features, which allow you to write simple programs and manage multiline pattern space, flow, and the hold buffer with a few simple keystrokes. Start here to learn the essentials of this versatile tool.
Introduction
Welcome
What is sed?
What you should know before watching this course
Using the exercise files
1. Sed Command-Line Basics
Using the most important sed command
Understanding input, output, files, and pipes
Quoting command-line arguments
Modifying the "s" command
2. Regular Expressions
Introducing regular expressions
Using character classes and quantifiers
Using & and \n
3. Sed Command-Line Flags
Controlling printing with -n and the "p" modifier
Specifying multiple commands with -e and -f
Challenge: Change ten thousand men to one woman
Solution: Change ten thousand men to one woman
4. More sed Commands
Understanding addresses and address ranges
Printing lines with "p"
Deleting lines with "d"
Reading and writing files with "r" and "w"
Performing transformations with "y"
Appending, inserting, and changing entire lines with "a", "i," and "c"
Challenge: Write the main() function from array.c to file main.c
Solution: Write the main() function from array.c to file main.c
5. Writing Programs in sed
Grouping commands with "{" and "}"
Getting the next line with "n"
Exiting with "q" and "d"
Commenting with "#"; debugging with "l" and "="
6. Advanced Programming Concepts
Managing multi-line pattern space with "N", "D," and "P"
Flow control with ":", "b," and "t"
Managing the hold buffer with "g", "G", "h", "H," and "x"
Challenge: Convert first three words of each line to all caps
Solution: Convert first three words of each line to all caps
Goodbye
Next steps
Download File Size:282.67 MB
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