The latest articles on DEV Community by KARATAS (@karatass). https://dev.to/karatass https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4106139%2F90270f41-d430-42a9-995d-9b68d0a557dd.png https://dev.to/karatass en KARATAS Wed, 02 Sep 2026 12:17:20 +0000 https://dev.to/karatass/the-hard-part-of-grading-a-terminal-command-why-string-matching-doesnt-work-jnh https://dev.to/karatass/the-hard-part-of-grading-a-terminal-command-why-string-matching-doesnt-work-jnh <p><strong>1.</strong> The problem: I wanted to auto-grade a terminal task</p> <p><strong>2.</strong> First attempt: compare the typed command to an expected command as a string — why it broke (infinite commands do the same job)</p> <p><strong>3.</strong> Second attempt: parse the output with regex — why it broke (different commands, equally valid output)</p> <p><strong>4.</strong> The fix: check simulated filesystem/process state at the end of the task instead</p> <p><strong>5.</strong> How I built this in JS (short code sample)</p> <p><strong>6.</strong> Result: this is how ShellPer's Lab module works, try it here <br> <a href="https://play.google.com/store/apps/details?" rel="noopener noreferrer">ShellPer On Google Play Store !</a></p> <p>👇🏻</p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fbxssgfdhq8q6ap0q3f7w.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fbxssgfdhq8q6ap0q3f7w.png" alt="library" width="800" height="1422"></a></p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fyiycf69g7eorwl2f2k04.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fyiycf69g7eorwl2f2k04.png" alt="search" width="800" height="1422"></a></p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fjqc8vdymxhvavr8w28gn.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fjqc8vdymxhvavr8w28gn.png" alt="lab-mission" width="800" height="1422"></a></p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2F6xcxb4ji27zh04daz65g.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2F6xcxb4ji27zh04daz65g.png" alt="danger-radar" width="800" height="1422"></a></p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fe2p8079owivw2k8fxbqq.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fe2p8079owivw2k8fxbqq.png" alt="playbook" width="800" height="1422"></a></p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fjbzfetvqg1lhc869304s.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fjbzfetvqg1lhc869304s.png" alt="toolkit" width="800" height="1422"></a></p> linux bash android firstyearincode