Inhalt: So you've got a large data set. New information is always coming in, and it's messy and inconsistent. Text files, Excel spreadsheets, web forms, email messages, and so on. You'd like to find a way to format it into something clean and consistent you can use in a database, and you'd like to automate that process as much as possible. Enter AWK, a command-line tool for Mac, Unix, and Linux that allows you to manipulate data in powerful ways. In this course, award-winning author and teacher David D. Levine shows you how to use AWK to read and write data in a variety of formats, produce reports, and automate repetitive tasks. He reviews the nuts and bolts of the language, such as field separators, pattern matching, variables, operators, expressions, and control structures; functions available for manipulating data; and integration with other programs like Excel. Umfang: 02:01:31.00
Inhalt: Although other text editors may be easier to use, vi is built into all Unix systems (including Linux and Mac OS). Knowing a few basic vi commands guarantees you'll be able to work with these systems when no other editor is installed. In this course, David D. Levine shows you how to get in and out of vi, switch modes, and start editing files in place. Learn how to change text within a file, use commands like undo and yank, find and replace text, and invoke more advanced Unix commands. Although it may be arcane, vi is still the standard text editor for all Unix systems. Start learning it now and run your systems more smoothly in the future. Umfang: 01:28:26.00
Inhalt: 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. Umfang: 02:01:15.00
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