4 Systems & infrastructure
Every entry filed under Systems & infrastructure and its subtopics.
What kind of help
What do these mean?
- Beginner
- You are new to this topic.
- Intermediate
- You use it, and want to get better.
- Advanced
- You know it well and need the details.
- Guided project
- Build something small from start to finish, step by step.
- Explains an idea
- Plain words on how something works and why.
- Step by step
- Numbered steps to get one task done.
- Cheat sheet
- Commands and options in a table, to look up fast.
- Fixes an error
- An error message, what it means, and how to solve it.
13 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
- 0347 Port check script: test a list of host:port pairs with timeouts A bash script that tries a TCP connection to each host:port you give it, waits a few seconds at most, and reports… Beginner · Cheat sheet · Linux, macOS Script DNS, IP addresses & ports · Firewalls 15 Oct 2026
- 0348 DNS check script: compare answers from several resolvers A bash script that looks up one or more names against your system resolver and three public resolvers, shows each answer with… Beginner · Cheat sheet · Linux, macOS Script DNS, IP addresses & ports 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
- 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
- 0141 List Kubernetes pods that are not Running and Ready A bash script that lists every pod across namespaces that is Pending, failing or running but not ready, with the waiting reason,… Intermediate · Cheat sheet · 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
- 0159 OpenShift cluster health snapshot: oc adm, nodes, MachineConfigPools and updates An admin overview of OpenShift day-2 checks (cluster version, update channels, cluster Operators, nodes, MachineConfigPools, must-gather) with a read-only bash script that… Advanced · Cheat sheet · Linux, macOS Script Cluster administration · Troubleshooting 15 Oct 2026