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Linux Shell Scripting Cookbook [electronic resource].
ISBN:
9781782162759
9781680153576
Title:
Linux Shell Scripting Cookbook [electronic resource].
Author:
Tushar, Shantanu.
Personal Author:
Edition:
2nd ed.
Publication Information:
Birmingham : Packt Publishing, 2013.
Physical Description:
1 online resource (384 pages)
General Note:
Image crawler and downloader.
Contents:
Cover; Copyright; Credits; About the Authors; About the Reviewers; www.PacktPub.com; Table of Contents; Preface; Chapter 1: Shell Something Out; Introduction; Printing in the terminal; Playing with variables and environment variables; Function to prepend to environment variables; Math with the shell; Playing with file descriptors and redirection; Arrays and associative arrays; Visiting aliases; Grabbing information about the terminal; Getting and setting dates and delays; Debugging the script; Functions and arguments; Reading the output of a sequence of commands.
Reading n characters without pressing the return keyRunning a command until it succeeds; Field separators and iterators; Comparisons and tests; Chapter 2: Have a Good Command; Introduction; Concatenating with cat; Recording and playing back of terminal sessions; Finding files and file listing; Playing with xargs; Translating with tr; Checksum and verification; Cryptographic tools and hashes; Sorting unique and duplicates; Temporary file naming and random numbers; Splitting files and data; Slicing filenames based on extension; Renaming and moving files in bulk.
Spell checking and dictionary manipulationAutomating interactive input; Making commands quicker by running parallel processes; Chapter 3: File In, File Out; Introduction; Generating files of any size; The intersection and set difference (A-B) on text files; Finding and deleting duplicate files; Working with file permissions, ownership, and the sticky bit; Making files immutable; Generating blank files in bulk; Finding symbolic links and their targets; Enumerating file type statistics; Using loopback files; Creating ISO files and hybrid ISO; Finding the difference between files, patching.
Using head and tail for printing the last or first 10 linesListing only directories -- alternative methods; Fast command-line navigation using pushd and popd; Counting the number of lines, words, and characters in a file; Printing the directory tree; Chapter 4: Texting and Driving; Introduction; Using regular expressions; Searching and mining a text inside a file with grep; Cutting a file column-wise with cut; Using sed to perform text replacement; Using awk for advanced text processing; Finding the frequency of words used in a given file; Compressing or decompressing JavaScript.
Merging multiple files as columnsPrinting the nth word or column in a file or line; Printing text between line numbers or patterns; Printing lines in the reverse order; Parsing e-mail addresses and URLs from a text; Removing a sentence in a file containing a word; Replacing a pattern with text in all the files in a directory; Text slicing and parameter operations; Chapter 5: Tangled Web? Not At All!; Introduction; Downloading from a web page; Downloading a web page as plain text; A primer on cURL; Accessing Gmail e-mails from the command line; Parsing data from a website.
Local Note:
eBooks on EBSCOhost
Subject Term:
Format:
Electronic Resources
Electronic Access:
Click here to view
Publication Date:
2013
Publication Information:
Birmingham : Packt Publishing, 2013.