Table Of ContentPreface. 1. An AWK Tutorial. Getting Started.Simple Output.Fancier Output.Selection.Computing with AWK.Control-Flow Statements.Arrays.A Handful of Useful "One-liners."What Next? 2. The AWK Lanaguage. Patterns.Actions.User-Defined Functions.Output.Input.Interaction with Other Programs.Summary. 3. Data Processing. Data Transformation and Reduction.Data Validation.Bundle and Unbundle.Multiline Records.Summary. 4. Reports and Databases. Generating Reports.Packaged Queries.A Relational Database System.Summary. 5. Processing Words. Random Text Generation.Interactive Text-Manipulation.Text Processing.Summary. 6. Little Languages. An Assembler and Interpreter.A Language for Drawing Graphs.A Sort Generator.A Reverse-Polish Calculator.An Infix Calculator.Recursive-Descent Parsing.Summary. 7. Experiments with Algorithms. Sorting.Profiling.Topological Sorting.Make: A File Updating Program.Summary. 8. Epilog. AWK as a Language.Performance.Conclusion. Appendix A: AWK Summary. Appendix B: Answers to Selected Exercises. Index.
SynopsisEssential reading for anyone wishing to engage with images, technologies and society, Doing Visual Ethnography is a milestone in ethnographic and visual research. The third edition of this classic text includes new chapters on web-based practices for visual ethnography and the issues surrounding the representation, interpretation and authoring of knowledge with the rise of digital media. The book provides a foundation for thinking about visual ethnography and introduces the practical and theoretical issues relating to the visual and digital technologies used in the field. Drawing upon her original research and the experiences of other ethnographers, Sarah Pink once again challenges our understanding of the world and sets new agendas for visual ethnography by: - Helpfully illustrating key concepts within real world contexts - Introducing examples from both analogue and digital media - Exploring material and electronic texts - Setting out the shift towards applied, participatory and public visual scholarship. This book is a must-have for students and researchers across the social sciences who are interested in incorporating audiovisual media into their research practice., Originally developed by Alfred Aho, Brian Kernighan, and Peter Weinberger in 1977, AWK is a pattern-matching language for writing short programs to perform common data-manipulation tasks., Weinberger in 1977, AWK is a pattern-matching language for writing short programs to perform common data-manipulation tasks. In 1985, a new version of the language was developed, incorporating additional features such as multiple input files, dynamic regular expressions, and user-defined functions. This new version is available for both Unix and MS-DOS. This is the first book on AWK. It begins with a tutorial that shows how easy AWK is to use. The tutorial is followed by a comprehensive manual for the new version of AWK. Subsequent chapters illustrate the language by a range of useful applications, such as: Retrieving, transforming, reducing, and validating data Managing small, personal databases Text processing Little languages Experimenting with algorithms The examples illustrates the books three themes: showing how to use AWK well, demonstrating AWKs versatility, and explaining how common computing operations are done. In addition, the book contains two appendixes: summary of the language, and answers to selected exercises.