-</span></code></pre><p>As yet another alternative, you can install <code>textual==0.85.2</code> (see <a href=https://textual.textualize.io/getting_started/>Textual documentation</a> for more details), clone my <a href=https://github.com/learnbyexample/TUI-apps>TUI-apps repository</a> and run the Python file from respective folders. For example, <code>grep_exercises.py</code> for the <code>grep</code> command.<p>Adjust the terminal dimensions for the widgets to appear properly, for example 84x25 (characters x lines).<blockquote><p><img alt=info src=/images/info.svg> You can use alternative CLI tools to solve these exercises as well. For example, <code>perl</code> instead of <code>GNU awk</code> or <code>ripgrep</code> instead of <code>GNU grep</code> and so on.</blockquote><br><h2 id=brief-guide>Brief Guide<a aria-label="Anchor link for: brief-guide" class=zola-anchor href=#brief-guide>🔗</a></h2><p>You can either click the buttons using mouse or press the key combinations listed below:<ul><li>Press <strong>F1</strong> to view the complete guide from within the app itself.<li>Press <strong>Ctrl+p</strong> and <strong>Ctrl+n</strong> to navigate the questions list.<li>Type the command in the box below the question.<li>Press <strong>Enter</strong> to execute the command. <ul><li>Output would be displayed below the command box.<li>If the output matches the expected results, the command box will turn <em>green</em> and reference solutions will also be shown.<li>Issues due to errors and timeout (about <code>2</code> seconds) will be displayed in <em>red</em>.</ul><li>Press <strong>Ctrl+s</strong> to toggle the reference solution box.<li>Press <strong>Ctrl+t</strong> to toggle between light and dark themes.<li>Press <strong>Ctrl+q</strong> to quit the app.<li>Some basic readline-like shortcuts are supported, for example <strong>Ctrl+u</strong>, <strong>Ctrl+k</strong>, <strong>Ctrl+w</strong>, etc</ul><p>Your progress is automatically saved when you close the app and restored when you launch it again later. Already answered questions will be skipped.<blockquote><p><img alt=warning src=/images/warning.svg> There is no safeguard against the command you are executing. They are treated as if you typed them from a shell session.</blockquote><br><h2 id=ebooks>Ebooks<a aria-label="Anchor link for: ebooks" class=zola-anchor href=#ebooks>🔗</a></h2><p>The exercise questions in these apps have been adapted from my programming ebooks: <a href=https://learnbyexample.github.io/books/>https://learnbyexample.github.io/books/</a></p><br><h2 id=feedback>Feedback<a aria-label="Anchor link for: feedback" class=zola-anchor href=#feedback>🔗</a></h2><p>I'd highly appreciate your feedback. Please file <a href=https://github.com/learnbyexample/TUI-apps/issues>an issue</a> if there are bugs, crashes, etc.<p>Hope you find these TUI apps useful. Happy learning :)</div><div class=post-footer><div class=post-tags><a href=https://learnbyexample.github.io/tags/gnu-grep/>#gnu-grep</a><a href=https://learnbyexample.github.io/tags/gnu-sed/>#gnu-sed</a><a href=https://learnbyexample.github.io/tags/gnu-awk/>#gnu-awk</a><a href=https://learnbyexample.github.io/tags/linux/>#linux</a><a href=https://learnbyexample.github.io/tags/command-line/>#command-line</a><a href=https://learnbyexample.github.io/tags/exercises/>#exercises</a><a href=https://learnbyexample.github.io/tags/tui/>#TUI</a><a href=https://learnbyexample.github.io/tags/textual/>#textual</a></div><hr color=#e6e6e6><div class=post-nav><p><a class=previous href=https://learnbyexample.github.io/cli-text-processing-awk-announcement/>← CLI text processing with GNU awk book announcement</a><br><p><a class=next href=https://learnbyexample.github.io/cli-text-processing-sed-announcement/>CLI text processing with GNU sed book announcement →</a><br></div><hr color=#e6e6e6><p>📰 Use <a href=https://learnbyexample.github.io/atom.xml>this link</a> for the Atom feed. <br> ✅ Follow me on <a href=https://twitter.com/learn_byexample>Twitter</a>, <a href=https://github.com/learnbyexample>GitHub</a> and <a href=https://www.youtube.com/c/learnbyexample42>Youtube</a> for interesting tech nuggets. <br> 📧 Subscribe to <a href=https://learnbyexample.gumroad.com/l/learnbyexample-weekly>learnbyexample weekly</a> for programming resources, tips, tools, free ebooks and more (free newsletter, delivered every Friday).<hr color=#e6e6e6></div></article></div></main></div><script src=https://learnbyexample.github.io/even.js></script>
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