DevOps

DevOps is a set of practices that combine software development (Dev) and IT operations (Ops). It aims to shorten the systems development life cycle and provide continuous delivery with high software quality.

GitHub: https://github.com/topics/devops
Wikipedia: https://en.wikipedia.org/wiki/DevOps
Related Topics: ci, cd, cicd, devsecops, gitops, chatops, test-automation, static-code-analysis, release-automation, infrastructure-as-code,
Aliases: dev-ops,
Last updated: 2026-06-27 00:08:14 UTC
JSON Representation

https://github.com/clouddrove/ansible-role-docker-jenkins-node-exporter

This ansible role is used to setup Jenkins node exporter with docker.

ansible cloud clouddrove dashboard devops grafana manage-topics monitoring node-exporter

Last synced: 29 Jan 2026

https://github.com/zuazo/chef_handler_sns-cookbook

Chef cookbook to install and enable chef-handler-sns: A simple Chef report handler that reports status of a Chef run through Amazon SNS. Includes IAM roles support.

amazon aws chef cookbook devops handler sns

Last synced: 22 Aug 2025

https://github.com/kprince28/django-sample-app

🐍🐳 Learn Docker & Kubernetes with Django! Educational containerized Django app with PostgreSQL support, environment variables, and production-ready patterns. Perfect for DevOps beginners.

beginners ci-cd containerization devops django docker docker-compose education k8s kubernetes learning microservices postgresql python tutorial

Last synced: 15 Apr 2026

https://github.com/capiscio/capiscio-python

The official CapiscIO CLI tool for validating A2A agents. A lightweight Python wrapper that automatically manages the capiscio-core binary.

a2a a2a-protocol agent-to-agent automation capiscio cli devops python security validation wrapper

Last synced: 17 Mar 2026

https://github.com/stormid/cake-mix

[WIP] "Cake Mix" is planned to morph into a modular set of cake tasks that can be chained together to produce uniform, build outputs following a common set of conventions for artifact management

cake-build devops

Last synced: 22 Aug 2025

https://github.com/shivenmian/load-balancer-sa

Load Balancing algorithms in node.js

devops load-balancer loadbalancer loadbalancing

Last synced: 04 Apr 2025

https://github.com/lotap/webhook-rollout

Enable push-to-deploy on any server. Trigger rolling deployments with `webhook` & `docker-rollout`

blue-green-deployment deployment deployment-automation devops docker docker-compose push-to-deploy rolling-update webhook webhooks

Last synced: 30 Jan 2026

https://github.com/coslynx/animeverse-discord-bot

Project: Shonen Quest Bot: Anime Adventure. Created at https://spectra.codes, which is owned by @Drix10

anime-community anime-database anime-discord-bot anime-gamification api-development code-generation code-quality developer-tools devops discord-bot-development discord-js interactive-features javascript machine-learning mongodb node-js shonen-quests software-development typescript vue-js

Last synced: 07 Feb 2026

https://github.com/dcyfr/dcyfr-ai-kubernetes

Kubernetes deployment templates and manifests for DCYFR AI services.

ai dcyfr devops kubernetes typescript

Last synced: 25 Feb 2026

https://github.com/shuakami/fuckrun

A lightweight cross-platform process manager for Python applications with monitoring and auto-restart capabilities.

auto-restart automation cli cross-platform daemon devops monitoring process-manager python rust

Last synced: 27 Apr 2026

https://github.com/dsrathore1/devops-project-1

My application is running successfully inside a Docker container on an AWS EC2 instance, but I’m unable to access it publicly over the internet. This issue usually arises due to improper port exposure, security group restrictions, or incorrect application binding.

devops docker fastapi

Last synced: 07 Feb 2026

https://github.com/microsphere-projects/microsphere-microprofile

Microsphere MicroProfile Project

cloud-native devops java micro-profile microservices microsphere

Last synced: 17 Mar 2026

https://github.com/vinicamposdev/devops-study

Study notes about DevOps - AWS, Kubernetes, Terraform, Kafka, Ansible, Istio, Prometheus, Elastic Stack

ansible aws devops docker docker-compose elasticstack golang helm hpa ingress ingress-nginx istio k8s kafka kubernetes nginx notes open-telemetry otel terraform

Last synced: 13 Feb 2026

https://github.com/dotsetlabs/bellwether

Open-source testing tool for Model Context Protocol (MCP) servers. Detect breaking schema changes before they reach production. Free deterministic validation with optional LLM-powered behavioral exploration. CI/CD ready with GitHub Actions support.

ai-agents anthropic api-testing automation ci-cd claude cli contract-testing developer-tools devops documentation-generator drift-detection github-actions llm mcp model-context-protocol openai schema-validation testing typescript

Last synced: 16 Feb 2026

https://github.com/iteratec/gitlab-sanity-cli

Cleanup tool for GItLab Server

artefacts automation devops devsecops gitlab gitlab-api gitlab-runner go golang repository sanity

Last synced: 27 Apr 2026

https://github.com/dhouib-mohamed/learnroom-k8s

learnroom-k8s repository manages the deployment of the Learnroom application in a Kubernetes cluster using Azure AKS.

aks argocd cloud deployment devops helm kubernetes monitoring prometheus

Last synced: 26 Feb 2026

https://github.com/yash509/devsecops-bb-char-react-app-deployment

Developed a HTML,CSS, and JavaScript based web application, implemented the DevSecOps practices for deploying on Docker and Kubernetes using Jenkins CI/CD Pipeline.

aws azure ci-cd cloud devops devops-pipeline devops-tools devsecops devsecops-pipeline docker dockerfile eks-cluster gcp hcl jenkins jenkinsfile kubernetes terra

Last synced: 07 Feb 2026

https://github.com/jaro-c/lynx

⚡ A blazingly fast, modern, and secure process manager for Linux. The zero-overhead, systemd-native alternative to PM2 powered by Go.

community daemon deployment devops golang isolation linux non-commercial open-source-like pm2 pm2-alternative process-manager sandboxing security supervisor systemd

Last synced: 23 May 2026

https://github.com/ettysekhon/platform-auth

Keycloak 26.x on GKE with Helm + Terraform realm management. OAuth 2.1/OIDC provider for cumulus-creations.com.

authentication devops gcp gke google-cloud helm infrastructure keycloak kubernetes oauth2 oidc terraform

Last synced: 08 Feb 2026

https://github.com/excoriate/terragrunt-labs

A Collection of Terragrunt Labs, experiments, and tests

cloud devops infrastructure-as-code opentofu terraform terragrunt

Last synced: 09 Feb 2026

https://github.com/kpeacocke/souschef

Chef to Ansible converter for enterprise automation: migrate Chef cookbooks, recipes, and data bags (Vault), convert InSpec to Testinfra, generate Ansible playbooks/roles and AWX/AAP workflows via an AI-powered MCP server.

aap ai ansible ansible-automation-platform ansible-web-executable awx chef chef-to-ansible cookbooks devops inspec mcp migration testinfra

Last synced: 04 May 2026

https://github.com/flexycode/ccsfen1l

🤖 This repository is intended for our Software Engineer CCSFEN1L COM232 by Professor Eliseo Q. Ramirez

agile-development devops fullstack-development scrum-agile sdlc software-engineering

Last synced: 10 Feb 2026

https://github.com/anayetullahefty/docker-project

Docker-Project is a collection of various Dockerized applications. Each project is contained in its own folder with the necessary Docker configurations (Dockerfile, docker-compose.yml, etc.) for building and running the application in isolated containers..

cicd development devops docker docker-compose docker-container docker-image docker-swarm dockerfile flutter javascript nginx node project python

Last synced: 07 Apr 2026

https://github.com/johnnymarquezv/multi-protocol-aws-terraform-ansible

AWS ALB target group for NLB Infrastructure, Nginx Configuration & Linux Security Hardening.

ansible aws devops infrastructure linux terraform

Last synced: 09 Apr 2026

https://github.com/amadou-6e/py-docker

Docker-DB is a Python library for managing database containers via Docker: supporting fast, scriptable setup of MongoDB, PostgreSQL, MySQL, and SQL Server for development and testing.

containerization database devops docker docker-python mongodb mysql pgvector postgresql python sql-server testing vector-database vectorstore vectorstores

Last synced: 07 Apr 2026

https://github.com/meibraransari/devops-roadmap

📌 HAPPY LEARNING - DevOps Roadmap 📌

developer-tools devops devtools

Last synced: 19 Mar 2026

https://github.com/alexfdealmeida/git-script-kit

GSK (Git Script Kit) - Corporate Git and DevOps Automation Framework

automation azure-devops bash cli devops framework git git-script gsk scm shell-script workflow zsh

Last synced: 07 Apr 2026

https://github.com/turbot/flowpipe-mod-ipstack

Ipstack pipeline library for the Flowpipe cloud scripting engine. Automation and workflows to connect Ipstack to the people, systems and data that matters.

automation cloud devops flowpipe flowpipe-mod hacktoberfest integrations ipstack ipstack-api low-code orchestration pipelines security workflow workflow-automation workflow-engine

Last synced: 19 Mar 2026

https://github.com/nozaq/terraform-cloudflare-parked-domain-baseline

A terraform module to set up DNS records to harden the parked(unused) domain using Cloudflare DNS.

cloudflare devops dns email-security hardening security security-hardening terraform-module

Last synced: 13 Aug 2025

https://github.com/simplenotsimpler/new-packervbfile

A PowerShell 7+ script which creates a new Packer JSON file to build a local VirtualBox Ubuntu machine by merging parameters into the Packer file. This eliminates the need to use the -var-file option.

devops devops-tools packer powershell powershell-core powershell-module ubuntu ubuntu2004 virtualbox

Last synced: 13 Feb 2026

https://github.com/kartikk-26/devops-training

This repository showcases my hands-on learning in DevOps, covering essential tools and practices. It’s a place for tracking progress, sharing knowledge, and collaborating on impactful solutions.

ansible aws-cloud ci-cd-pipeline devops docker git github jenkins kubernetes linux server-administration terraform

Last synced: 10 Apr 2026

https://github.com/jurczykpawel/mikrus-toolbox

Bash scripts for managing Mikrus VPS — deploy Docker apps, configure domains, backups, and diagnostics. 25+ apps, one command.

automation bash deployment devops docker mikrus self-hosted server-management vps wordpress

Last synced: 24 May 2026

https://github.com/yash509/devsecops-batry-indicator-deployment

Developed a real-time Battery Indicator Application, implemented the DevSecOps practices for deploying on Docker and Kubernetes using Jenkins CI/CD Pipeline.

aws azure ci-cd cloud devops devops-pipeline devops-tools devsecops devsecops-pipeline docker dockerfile eks gcp hcl jenkins jenkinsfile kubernetes kubernetes-deployment terraform

Last synced: 03 Jan 2026

https://github.com/darkwizard242/ansible-role-jenkinslts

Ansible role for Jenkins LTS (Long Term Support). Available on Ansible Galaxy.

ansible ansible-galaxy ansible-roles cicd devops jenkins linux system

Last synced: 14 Feb 2026

https://github.com/pazderskipawel/cicd_wp_demo

Dockerized WordPress + MySQL with CI/CD via GitHub Actions

cicd devops docker docker-compose dockerfile github-actions wordpress

Last synced: 04 Apr 2026

https://github.com/dinushchathurya/springboot-gradle-jib-cicd

Complete CI pipeline using GitHub Action to dockerize your Java SpringBoot Gradle application using Jib and push image to Docker Hub

devops docker dockerhub github github-action github-actions github-actions-enabled github-workflow java java-gradle jib jib-docker-package jib-gradle jib-plugin pipeline spring-boot springboot

Last synced: 10 Apr 2026

https://github.com/bulletdev/infra-automation

Automação de infra com Perl e golang

devops go perl prometheus svelte

Last synced: 06 May 2026

https://github.com/lkubb/salt-mariadb-formula

Manage a MariaDB server or Galera cluster of MariaDB nodes with Salt.

database devops mariadb mysql salt-formula saltstack saltstack-formula

Last synced: 02 Apr 2026

https://github.com/dvilaverde/k8s-countermeasures

Kubernetes operator deploying run-books as code.

automation countermeasure devops golang k8s kubernetes operator operator-sdk prod-support runbooks sre

Last synced: 15 Jan 2026

https://github.com/dongkoony/k8s-ec2-observability

Terraform module collection for building Kubernetes clusters on AWS EC2 with comprehensive observability implementation

aws devops golang grafana kubernetes prometheus python terraform

Last synced: 15 Feb 2026

https://github.com/gitfrandu4/40984-cn

Repositorio de la asignatura Computación en la Nube

aws aws-cli cloud-computing cloud-infrastructure devops ec2 rds scalability

Last synced: 28 Feb 2026

https://github.com/fossillogic/shark

Shark Tool is the ultimate all-in-one file and system administration utility. Built for admins, developers, and power users, Shark unifies essential file management, automation, and analysis tasks into a single, powerful command-line interface—eliminating the need for multiple separate tools.

admin admin-tool command-line devops linux meson mesonbuild ninja-build

Last synced: 01 Apr 2026

https://github.com/baratharivazhagan/devops-workshop

ansible devops devops-tools docker git terraform

Last synced: 16 Apr 2026

https://github.com/bitsofinfo/cicd-toolbox

Simple alpine docker image for CICD ops with bash, redis, python, curl, jq, jo, and yq. Run bash, python scripts, cURL ops, manipulate JSON and YAML!

bash cicd continuous-delivery continuous-integration curl devops jo jq json shell yaml yq

Last synced: 10 Apr 2026

https://github.com/tobbie/grafana-showcase-1

A Grafana dashboard for monitoring and visualization

alloy apm devops grafana logs loki metrics monitoring observability prometheus tempo traces

Last synced: 28 Apr 2026

https://github.com/ahsouza/provisionamento-agil

Automation and agile provisioning

ansible aws devops docker nginx php-fpm provisioning ruby shell-script sysadmin vagrant virtualbox wordpress wordpress-site

Last synced: 10 Apr 2026

https://github.com/akavel/nixme

Nix minimal effector — receives and unpacks prebuilt Nix derivations from `nix copy --to ssh://...`

devops nix

Last synced: 28 Apr 2026

https://github.com/Tedezed/linux-command-tools

Linux Command Tools 🔥🐧🔥

devops devops-tool docker-tool kubernetes-tool linux linux-shell shell-script shell-tool

Last synced: 17 Aug 2025

https://github.com/grammatonic/github-runner

🚀 Self-hosted GitHub Actions runners with Docker containerization, Chrome browser support for web UI testing, comprehensive CI/CD pipelines, monitoring stack, and production-ready deployment automation. Perfect for teams needing reliable, scalable, and secure runner infrastructure.

chrome-runner cicd devops docker github-actions monitoring playwright prometheus-metrics selenium self-hosted-runner web-ui-testing

Last synced: 01 Mar 2026

https://github.com/zuazo/zookeeper_bridge-cookbook

Chef cookbook to help integrating the Chef Run with ZooKeeper.

chef cookbook devops handler integration zookeeper zookeeper-bridge

Last synced: 15 Mar 2026

https://github.com/tosheto/todor-stavrev-qa-blockchain-tests

Smart contract QA project using Hardhat, TypeScript and Chai for manual and automated testing. Includes sample ERC20 token (ExampleToken), unit tests, gas usage reporting, and best practices for blockchain quality assurance.

blockchain blockchain-technology chai ci-cd dapps-development devops erc20 ethereum ethersjs fuzz-testing gas-reporter hardhat mocha mocha-chai qa-automation security-testing smart-contracts solidity test-driven-development typescript

Last synced: 16 Apr 2026

https://github.com/thatmlopsguy/dokaseca-control-plane

Framework for bootstrapping cloud-native platforms using Kubernetes in Docker (Kind)

argocd devops dokaseca gitops gitops-bridge homelab k8s kubernetes platform-engineering terraform

Last synced: 19 May 2026

https://github.com/the-aerospace-corporation/pivt

PIVT is an analytics tool to help software development teams visualize the life cycle and behavior of their software factory.

analytics dashboards data devops jenkins pipeline python splunk visualization

Last synced: 29 Apr 2026

https://github.com/casablanque-code/platform-infra

Self-hosted infrastructure platform for small engineering teams. Provision VMs, bootstrap services, track nodes, run actions — from a web UI. No tickets, no bottlenecks, no SaaS vendor.

ansible devops infrastructure open-source tofu

Last synced: 02 Jun 2026

https://github.com/mide-it/cdn-ip-ranges

🌐 Collect and manage IPv4/IPv6 subnet lists from top CDN providers for seamless network integration and configuration.

cidr cidr-range cidr-ranges clash cloudflare cloudflare-api devops fastly filter firewall-rules gcore ip-range-check iprange mass sync trojan v2ray vpn

Last synced: 16 Apr 2026

https://github.com/chidcgithub/pyvizast

A Python AST visualizer & static analyzer.

ast ci-cd code-analysis code-smells d3js debugging developer-tools devops fastapi hacktoberfest parser python refactoring syntax-tree syntax-tree-visualizer visualization

Last synced: 14 Mar 2026

https://github.com/shamimgeek/udacity-cloud-devops-engineer

aws devops

Last synced: 17 Jan 2026

https://github.com/dryvist/ansible-proxmox

Automate your Proxmox server setup in minutes instead of hours. Production-ready Ansible roles for performance tuning, ZFS swap, system limits, and monitoring—so every server is configured identically with a single command.

ansible ansible-playbook ansible-roles automation configuration-management debian devops homelab infrastructure-as-code linux proxmox proxmox-ve sysadmin virtualization zfs

Last synced: 03 Jun 2026

https://github.com/santiagon610/terraform-digitalocean-k8s-cluster

Terraform wrapper to make a Kubernetes cluster.

devops digitalocean digitalocean-kubernetes iac kubernetes kubernetes-cluster terraform terraform-module

Last synced: 04 Mar 2026

https://github.com/stefanbudim/stefanbudim.github.io

Stefan Budim's Blog

devops docker kubernetes linux tech

Last synced: 09 Apr 2026

https://github.com/puzzle/openshift-dev-cheatsheet

Openshift Developer Cheatsheet

cheatsheet devops openshift

Last synced: 05 Mar 2026

https://github.com/ethersphere/helm-charts-artifacts

Packaged Helm charts for running Swarm

devops

Last synced: 05 Mar 2026

https://github.com/clouddrove/terraform-azure-bastion

Terraform module to create bastion resource on AZURE. Azure Bastion is a fully managed platform-as-a-service that enables secure and seamless remote access to virtual machines within an Azure virtual network (VNet).

azure-bastion devops hcl terraform terraform-modules

Last synced: 05 Mar 2026

https://github.com/ianlintner/caretaker

Agentic Repo Maintenance

agentic caretaker copilot devops llm python

Last synced: 14 May 2026

https://github.com/prune998/devops

devops golang kubernetes

Last synced: 17 Apr 2026

https://github.com/shenxianpeng/blog

Xianpeng Shen's Blog

automation blog blog-article blogger cicd devops hexo shenxianpeng

Last synced: 17 Aug 2025

https://github.com/maaworld/become-a-kubernetes-professional-a2z

Become a Kubernetes Professional - A2Z Series (Deep-dive)

a2z-series all-in-one chhirolya-technologies devops free-for-all kubernetes kubernetes-professional maa-world-foundation open-source programmers-worldwide-community

Last synced: 03 Jun 2026

https://github.com/evalle/poms

The main ideas from the "Principles of Microservices" course

cd continuous-delivery design devops docker kubernetes microservice microservices principles

Last synced: 30 Apr 2026

https://github.com/iamseth/akcli

Akamai CLI tool written in Python

akamai cli command-line-tool devops python

Last synced: 29 Apr 2026

https://github.com/vs4vijay/kubernetes-world

Kubernetes Playground

devops docker express kubectl kubernetes nodejs

Last synced: 07 Apr 2026

https://github.com/heniv96/mcp-jenkins-intelligence

AI-powered Jenkins pipeline intelligence platform with natural language interface. Provides comprehensive pipeline analysis, failure prediction, optimization suggestions, and automated Jenkinsfile reconstruction using Model Context Protocol (MCP) integration.

ai ci-cd cicd cursor devops jenkins mcp-server vscode

Last synced: 17 Apr 2026

https://github.com/karthikairam/account-transaction-service

This is a demo micro-service for account transaction as part of mobile challengers banking.

account-transaction devops docker functional-programming github-actions jacoco java-11 junit5 memory-database microservice mockito openapi3 spring-boot swagger2 tdd-java

Last synced: 09 Apr 2026

https://github.com/yunlzheng/kubeadm-vagrant

install kubernates with kubeadm in vagrant

devops k8s kubeadm vagrant

Last synced: 17 Apr 2026

https://github.com/clydedz/cicd-docs

Documenting your Azure DevOps pipeline has never been easier!

azure azure-devops cicd clyde-dsouza devops devops-pipeline documentation documentation-generator documentation-tool github-pages html javascript jquery jspdf microsoft microsoft-azure mustache-js pipeline vsts whatsapp-sharing

Last synced: 16 Aug 2025

https://github.com/kadasz/skill-ssh

A skill for opsdroid to run command on remote servers via ssh

chatops devops opsdroid

Last synced: 24 Jun 2025

https://github.com/fluent-ci-templates/django-pipeline

A ready-to-use CI/CD Pipeline for Django projects

deno deno-module devops django gitlab-ci pipeline python typescript

Last synced: 04 Apr 2026

https://github.com/zloeber/githubinfo

Github project information utility

devops github golang utility

Last synced: 17 Apr 2026

https://github.com/freelensapp/freelensapp.github.io

Freelens website

cloud-native containers devops kubernetes kubernetes-dashboard kubernetes-ui

Last synced: 17 May 2026

https://github.com/cuonglamphu/vfoodie

An online platform developed using the Laravel framework, dedicated to storing and sharing recipes.

devops laravel11 mysql nginx

Last synced: 04 Apr 2026

https://github.com/lokimcpuniverse/argocd-mcp-server

MCP server for ArgoCD - GitOps continuous delivery for Kubernetes with GenAI

ai-agents argocd cd deployment devops genai gitops k8s kubernetes mcp model-context-protocol

Last synced: 18 Apr 2026

https://github.com/dmytro-rybak/kube-essentials

A hands-on project template to practice Kubernetes fundamentals by deploying a small full-stack application (FastAPI, React, PostgreSQL) in a kind cluster.

deployment devops docker helm kind kubernetes

Last synced: 16 Aug 2025

https://github.com/shamimgeek/udacity-cloud-devops-engineer-capstone-project

Udacity Cloud Devops Engineer Capstone Project

anchore aws cloud cloudformation devops docker eks go hadolint jenkins kubernetes udacity

Last synced: 17 Jan 2026

https://github.com/davenarchives/dev-cheatsheets

a collection of cheatsheets for programming languages and dev tools

c cpp csharp css database devops framework git html java javascript links markdown programming-languages python resources sql tutorials

Last synced: 09 Apr 2026

https://github.com/magenx/kuberaptor

Hetzner K3s production-ready private clusters created with a single command. No programming required, no complexity.

automation cloud cluster devops docker go golang hcloud hetzner hetzner-cloud iac k3s k8s kubernetes

Last synced: 09 Apr 2026

https://github.com/yash509/devsecops-blog-website-deployment

A Blog Website developed using HTML, CSS and JavaScript

argocd aws azure cloud css devops devops-tools devsecops docker gcp hcl html javascript jenkins-pipeline jenkinsfile kubernetes terraform

Last synced: 03 Jan 2026

https://github.com/symball/the-lab

set up and manage a lab environment to run full end-to-end business services including management and deployment of code

ansible devops

Last synced: 06 Mar 2025

https://github.com/mcascone/terraform-vra-chef-example

A simple example of using Terraform to spin vRA machines and run Chef on them.

chef devops terraform vra

Last synced: 15 Apr 2025

https://github.com/cruxstack/terraform-aws-github-ops-app

Terraform module to deploy GitHub Ops App on AWS Lambda with API Gateway for team sync, PR compliance, and Slack notifications

aws aws-apigateway aws-lambda cloudposse compliance devops github github-app okta slack sweetops terraform terraform-module

Last synced: 13 Jan 2026

https://github.com/yash509/devsecops-react-tailwind-app

Developed a React and Tailwind CSS based Pizza App

aws azure cloud css devops devsecops docker gcp hcl html javascript kubernetes react tailwind-css terraform

Last synced: 09 Apr 2026

https://github.com/yash509/devsecops-uber-clone-deployment

Developed a Uber Clone Application, implemented the DevSecOps practices for deploying on Docker and Kubernetes using Jenkins CI/CD Pipeline.

automation ci-cd css devops devops-tools devsecops docker hcl html javascript jenkins kubernetes nodejs project-repository terraform

Last synced: 10 Apr 2026

https://github.com/khaizinam/devop-tools

A comprehensive collection of Bash scripts for automating system administration, development environment setup, and server management tasks on Linux/Ubuntu/WSL2 systems.

automation bash-tools command-line debian devops linux linux-tools shell-scripts sysadmin ubuntu