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<!doctypehtml><html class="sidebar-visible no-js light"lang=en><head><meta charset=UTF-8><title>Buy PDF/EPUB versions - CLI text processing with GNU Coreutils</title><meta content="text/html; charset=utf-8"http-equiv=Content-Type><meta content="Example based guide for specialized text processing with GNU Coreutils"name=description><meta content=width=device-width,initial-scale=1 name=viewport><meta content=#ffffff name=theme-color><meta content="CLI text processing with GNU Coreutils"property=og:title><meta content=website property=og:type><meta content="Example based guide for specialized text processing with GNU Coreutils"property=og:description><meta content=https://learnbyexample.github.io/cli_text_processing_coreutils/ property=og:url><meta content=https://raw.githubusercontent.com/learnbyexample/cli_text_processing_coreutils/main/images/cli_coreutils_ls.png property=og:image><meta content=1280 property=og:image:width><meta content=720 property=og:image:height><meta content=summary_large_image property=twitter:card><meta content=@learn_byexample property=twitter:site><link href=favicon.svg rel=icon><link rel="shortcut icon"href=favicon.png><link href=css/variables.css rel=stylesheet><link href=css/general.css rel=stylesheet><link href=css/chrome.css rel=stylesheet><link href=FontAwesome/css/font-awesome.css rel=stylesheet><link href=fonts/fonts.css rel=stylesheet><link href=highlight.css rel=stylesheet><link href=tomorrow-night.css rel=stylesheet><link href=ayu-highlight.css rel=stylesheet><link href=style.css rel=stylesheet><body><script>var path_to_root = "";
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(Shortkey: s)"aria-controls=searchbar aria-expanded=false aria-keyshortcuts=S class=icon-button id=search-toggle type=button><i class="fa fa-search"></i></button></div><h1 class=menu-title>CLI text processing with GNU Coreutils</h1><div class=right-buttons><a aria-label=Blog href=https://learnbyexample.github.io title=Blog> <i class="fa fa-home"id=home-button></i> </a><a aria-label=Twitter href=https://twitter.com/learn_byexample title=Twitter> <i class="fa fa-twitter"id=twitter-button></i> </a><a aria-label="Git repository"title="Git repository"href=https://github.com/learnbyexample/cli_text_processing_coreutils> <i class="fa fa-github"id=git-repository-button></i> </a></div></div><div class=hidden id=search-wrapper><form class=searchbar-outer id=searchbar-outer><input placeholder="Search this book ..."aria-controls=searchresults-outer aria-describedby=searchresults-header id=searchbar name=searchbar type=search></form><div class="searchresults-outer hidden"id=searchresults-outer><div class=searchresults-header id=searchresults-header></div><ul id=searchresults></ul></div></div><script>document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
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Throughout the text there are little highlights offering tips on extra functionality or limitations of certain commands. For instance, when discussing the <em>shuf</em> command we're warned that <em>shuf</em> will not work with multiple files. However, we can merge multiple files together (using the cat command) and then pass them to <em>shuf</em>. These little gems of wisdom add a dimension to the book and will likely save the reader some time wondering why their scripts are not working as expected.<p>— book review by Jesse Smith on <a href=https://distrowatch.com/weekly.php?issue=20211206#book>distrowatch.com</a></blockquote><blockquote><p>I discovered your books recently and they’re awesome, thank you! As a 20 year *nix they made me realize how much more there are to these rock solid and ancient tools, once you spend the time to actually learn the intricacies of them.<p>— feedback on <a href=https://old.reddit.com/r/commandline/comments/1byumd6/learn_gnu_coreutils_text_processing_tools_like/l2pk5bd/>reddit</a></blockquote><h2 id=book-list><a class=header href=#book-list>Book list</a></h2><p>Here's a list of programming books I've written:<ul><li><a href=https://learnbyexample.github.io/py_regular_expressions/>Understanding Python re(gex)?</a><li><a href=https://learnbyexample.github.io/learn_js_regexp/>Understanding JavaScript RegExp</a><li><a href=https://learnbyexample.github.io/Ruby_Regexp/>Understanding Ruby Regexp</a><li><a href=https://learnbyexample.github.io/learn_gnugrep_ripgrep/>CLI text processing with GNU grep and ripgrep</a><li><a href=https://learnbyexample.github.io/learn_gnused/>CLI text processing with GNU sed</a><li><a href=https://learnbyexample.github.io/learn_gnuawk/>CLI text processing with GNU awk</a><li><a href=https://learnbyexample.github.io/learn_ruby_oneliners/>Ruby One-Liners Guide</a><li><a href=https://learnbyexample.github.io/learn_perl_oneliners/>Perl One-Liners Guide</a><li><a href=https://learnbyexample.github.io/100_page_python_intro/>100 Page Python Intro</a><li><a href=https://learnbyexample.github.io/practice_python_projects/>Practice Python Projects</a><li><a href=https://learnbyexample.github.io/cli_text_processing_coreutils/>CLI text processing with GNU Coreutils</a><li><a href=https://learnbyexample.github.io/cli_text_processing_rust/>Command line text processing with Rust tools</a><li><a href=https://learnbyexample.github.io/vim_reference/>Vim reference guide</a><li><a href=https://learnbyexample.github.io/cli-computing/>Computing from the Command Line</a></ul></main><nav aria-label="Page navigation"class=nav-wrapper><a aria-label="Previous chapter"class="mobile-nav-chapters previous"title="Previous chapter"aria-keyshortcuts=Left href=cover.html rel=prev> <i class="fa fa-angle-left"></i> </a><a aria-label="Next chapter"class="mobile-nav-chapters next"title="Next chapter"aria-keyshortcuts=Right href=preface.html rel=next> <i class="fa fa-angle-right"></i> </a><div style="clear: both"></div></nav></div></div><nav aria-label="Page navigation"class=nav-wide-wrapper><a aria-label="Previous chapter"class="nav-chapters previous"title="Previous chapter"aria-keyshortcuts=Left href=cover.html rel=prev> <i class="fa fa-angle-left"></i> </a><a aria-label="Next chapter"class="nav-chapters next"title="Next chapter"aria-keyshortcuts=Right href=preface.html rel=next> <i class="fa fa-angle-right"></i> </a></nav></div><script>window.playground_copyable = true;</script><script charset=utf-8 src=elasticlunr.min.js></script><script charset=utf-8 src=mark.min.js></script><script charset=utf-8 src=searcher.js></script><script charset=utf-8 src=clipboard.min.js></script><script charset=utf-8 src=highlight.js></script><script charset=utf-8 src=book.js></script><script src=sidebar.js></script>