Scripts

Short programs and one-liners, ready to copy. Every script says what it changes and how to undo it.

28 entries match these filters

0404 Find the largest folders on a drive with PowerShell Lists the biggest top-level folders under a path, with file counts and sizes in GB, so you can see where the disk… Beginner · Step by step · Linux, macOS, Windows Script PowerShell · Windows administration 15 Oct 2026
0415 Check a site’s TLS expiry and security headers from the terminal A bash script that connects to a domain, prints the certificate's issuer and expiry with days remaining, and reports which recommended security… Intermediate · Step by step · Linux, macOS Script Making requests · Web servers & reverse proxies 15 Oct 2026
0366 restic backup wrapper with tagging, retention and a weekly check A bash wrapper that runs restic backup on a fixed list of paths, applies a keep-daily/weekly/monthly policy with forget and prune, runs… Intermediate · Step by step · Linux, macOS Script Backup tools · Backups & syncing 15 Oct 2026
0335 Docker cleanup script with dry run and confirmation A bash wrapper around docker system prune that shows disk usage and lists what would be removed, supports a dry-run flag, and… Beginner · Step by step · Linux, macOS Script Docker basics · Shell scripting 15 Oct 2026
0336 Back up and restore a Docker named volume to a tar archive A bash script that copies the contents of a named Docker volume into a .tar.gz on the host, and restores an archive… Intermediate · Step by step · Linux, macOS Script Backup tools · Docker basics 15 Oct 2026
0237 Use Redis as a cache: TTLs, maxmemory and an eviction health report Set a memory limit and an eviction policy so Redis behaves like a cache, give keys TTLs, then run a bash report… Intermediate · Step by step · Linux, macOS Script Administration & persistence · Basics 15 Oct 2026
0223 Oracle users, roles and tablespaces: setup script and usage report (SQL) A SQL*Plus/SQLcl script that creates a tablespace, a role and an application user inside a PDB, then reports tablespace usage from the… Intermediate · Step by step · Any system Script Administration · Security & access 15 Oct 2026
0182 Your first Ansible playbook: install nginx and publish a page A complete beginner playbook that installs nginx on Debian or Ubuntu servers, starts it at boot and deploys a home page, with… Beginner · Step by step · Linux, macOS Script Ansible 15 Oct 2026
0183 Ansible variables, templates and handlers: configure an nginx site Use group variables, Jinja2 templates and handlers together: render an nginx server block from variables, test the config and reload nginx only… Intermediate · Step by step · Linux, macOS Script Ansible 15 Oct 2026
0188 First Terraform configuration: variables, a module and outputs (no cloud needed) A complete Terraform project that writes local files with the hashicorp/local provider, so you can practice init, plan, apply, modules and destroy… Intermediate · Step by step · Any system Script Terraform 15 Oct 2026
0139 Collect describe, events and logs of a failing Kubernetes pod A bash script that saves a pod's status, describe output, events, YAML, current and previous logs of every container and its node… Intermediate · Step by step · Linux, macOS Script Troubleshooting 15 Oct 2026
0158 Collect an OpenShift project report with oc A read-only bash script that gathers a project's workloads, pods, routes, builds, storage and warning events, plus describe output and logs of… Intermediate · Step by step · Linux, macOS Script Deploying applications · Troubleshooting 15 Oct 2026
0075 CSV to JSON converter (Python, standard library) Convert any CSV file with a header row into a JSON array or JSON Lines. Handles quoted fields, a byte order mark,… Beginner · Step by step · Any system Script CSV & JSON · Files & automation 15 Oct 2026
0083 Test a JSON API with curl A runnable bash script showing the curl commands you need most when testing an API: GET, POST JSON, custom headers, Bearer tokens,… Beginner · Step by step · Linux, macOS, Windows Script Authentication · Making requests 15 Oct 2026
0084 Tiny JSON echo server for testing HTTP clients A standard-library Python server that echoes back the method, path, query, headers, and body of every request, and can return any status… Intermediate · Step by step · Any system Script Files & automation · Making requests 15 Oct 2026
0085 fetch with timeout, retries, and exponential backoff A drop-in fetch wrapper that times out slow requests, retries network errors and 429/5xx responses with jittered exponential backoff, and honors Retry-After. Advanced · Step by step · Any system, Browser Script Async code · Making requests 15 Oct 2026
0043 Delete local branches that are already merged A bash script that lists local branches fully merged into main and, if you ask, deletes them. It never touches the current… Intermediate · Step by step · Linux, macOS, Windows Script Housekeeping 15 Oct 2026
0059 Incremental snapshot backups with rsync A bash script that copies a folder into dated snapshots with rsync, hard-links unchanged files to the previous snapshot to save space,… Advanced · Step by step · Linux, macOS Script Backups & syncing · Shell scripting 15 Oct 2026
0060 Find the biggest files and folders eating your disk A short bash script that lists the largest files over a size limit and the largest subfolders, using find, du, sort and… Beginner · Step by step · Linux, macOS Script Finding files & text · Text processing 15 Oct 2026
0022 Build a small Node.js CLI with util.parseArgs A complete, dependency-free command-line tool in Node: options and flags with parseArgs, input from files or a pipe, help text, and meaningful… Intermediate · Step by step · Any system Script Node.js 15 Oct 2026
0023 Run async tasks with a concurrency limit A small mapLimit helper that runs an async function over many items with at most N in flight, keeps result order, stops… Advanced · Step by step · Any system Script Async code 15 Oct 2026
0032 First-time Git setup: name, email, default branch, SSH or HTTPS Tell Git who you are, pick sensible defaults, and choose between SSH and HTTPS for GitHub. Includes a small script that applies… Beginner · Step by step · Linux, macOS, Windows Script Setup 15 Oct 2026
0009 CSV to JSON converter A small command-line tool that turns a CSV file into a JSON array of objects, with optional number detection, custom delimiters and… Beginner · Step by step · Any system Script CSV & JSON · Files & automation 15 Oct 2026
0010 Find duplicate files by content Scans folders and lists files with identical content, using file size first and SHA-256 hashes second. It is read-only and only reports… Intermediate · Step by step · Any system Script Files & automation 15 Oct 2026
0011 Bootstrap a new Python project with a venv A Bash script that creates a project folder with a virtual environment, .gitignore, requirements.txt and a starter main.py, then runs it to… Intermediate · Step by step · Linux, macOS Script Environments & packages 15 Oct 2026
0019 fetch with timeout, retries and proper error handling A reusable fetchJson helper for Node 20+ and browsers that adds a timeout, retries with backoff for temporary failures, and clear errors… Intermediate · Step by step · Any system Script Async code · Making requests 15 Oct 2026
0020 Debounce and throttle functions in plain JavaScript Two small dependency-free helpers that limit how often a function runs: debounce waits for a pause, throttle runs at most once per… Intermediate · Step by step · Any system Script Patterns 15 Oct 2026
0021 Read and write files in Node.js with fs/promises A complete Node script that walks a folder, reads text files, and writes a JSON report safely, showing the everyday fs/promises calls… Beginner · Step by step · Any system Script Node.js 15 Oct 2026