DevOps Cheat Sheets

Quick reference guides for common DevOps tools and commands

Ansible Commands

Ansible ad-hoc commands, playbook flags, and Vault operations.

$ ansible all -m ping -i inventory

Ping all hosts in inventory

$ ansible all -a "uptime" -i inventory

Run ad-hoc command on all hosts

$ ansible web -m copy -a "src=file dest=/tmp/" -i inventory

Copy file to web hosts

$ ansible web -m service -a "name=nginx state=restarted" -i inventory

Restart a service on hosts

$ ansible-playbook -i inventory site.yml

Run a playbook with inventory

$ ansible-playbook -i inventory site.yml --check --diff

Dry-run with diff (no changes applied)

AWS CLI

Common AWS CLI operations for S3, EC2, IAM, EKS, and more.

$ aws configure

Configure credentials and default region/output

$ aws sts get-caller-identity

Show current AWS identity

$ aws s3 ls

List buckets

$ aws s3 cp file s3://bucket/path

Copy file to S3

$ aws s3 sync . s3://bucket/path

Sync local directory to S3

$ aws s3 rm s3://bucket/path --recursive

Delete objects recursively

Docker Commands

Frequently used Docker CLI commands for images, containers, and networks.

$ docker version

Show Docker client/server versions

$ docker info

Display system-wide info

$ docker images

List images

$ docker pull nginx:latest

Pull an image from a registry

$ docker rmi IMAGE

Remove an image

$ docker ps / docker ps -a

List running / all containers

Git Commands

Essential Git commands for version control and collaboration.

$ git init

Initialize a new Git repository

$ git clone URL

Clone a repository from URL

$ git status

Show working tree status

$ git add .

Stage all changes for commit

$ git commit -m "message"

Commit staged changes with message

$ git commit -am "message"

Stage and commit all tracked files

Kubernetes Commands

Kubectl commands for pods, deployments, services, and debugging.

$ kubectl config get-contexts

List kubeconfig contexts

$ kubectl config use-context NAME

Switch current context

$ kubectl get nodes

List cluster nodes

$ kubectl get pods -A

List pods across all namespaces

$ kubectl get svc -A

List services across all namespaces

$ kubectl describe pod POD -n ns

Describe a pod for details and events

Linux Commands

Essential Linux commands for daily administration and troubleshooting.

$ ls -la

List all files with permissions/owner/size

$ cd /path/to/dir

Change current directory

$ pwd

Print working directory

$ mkdir -p dir/subdir

Create directory (including parents)

$ touch file

Create an empty file or update timestamp

$ cp -r src dst

Copy files/directories recursively

Python Commands

Common Python commands for development, package management, and scripting.

$ python --version

Check Python version

$ python3 script.py

Run a Python script

$ python -m venv venv

Create a virtual environment

$ source venv/bin/activate

Activate virtual environment (Linux/Mac)

$ venv\Scripts\activate

Activate virtual environment (Windows)

$ deactivate

Deactivate virtual environment

Terraform Commands

Terraform CLI for formatting, validation, planning, and state operations.

$ terraform -install-autocomplete

Enable CLI autocompletion

$ terraform init

Initialize working directory (download providers/modules)

$ terraform fmt -recursive

Format configuration files

$ terraform validate

Validate configuration for syntax/consistency

$ terraform plan -out=tfplan

Create an execution plan (saved to file)

$ terraform apply tfplan

Apply a saved plan

DevOps Cheat Sheets

Ansible Commands

AWS CLI

Docker Commands

Git Commands

Kubernetes Commands

Linux Commands

Python Commands

Terraform Commands

5MinStudy

DevOps Cheat Sheets

Ansible Commands

AWS CLI

Docker Commands

Git Commands

Kubernetes Commands

Linux Commands

Python Commands

Terraform Commands