Developer Cheatsheets on AI VOID

Aruba Wireless AOS 8 / AOS 10 Cheatsheet - Complete Reference 2025

Tue, 30 Dec 2025 00:00:00 +0000

Aruba Wireless AOS 8 / AOS 10 Cheatsheet

This cheatsheet provides a comprehensive, quick-reference guide for configuring, managing, and troubleshooting Aruba Wireless LANs running AOS 8 (Mobility Master/Controller) and AOS 10 (Aruba Central/Gateway) as of December 2025. It covers essential commands, configuration steps, and best practices for enterprise wireless environments.

Quick Reference

Category	Command/Concept	Description
System Info	`show version`	Display software version and uptime.
	`show ap database long`	View details of all connected Access Points.
	`show users`	List connected wireless clients.
Connectivity	`ping <IP>`	Test network reachability.
	`show datapath session table`	View active firewall sessions.
WLAN Config	`wlan ssid-profile <name>`	Create/edit an SSID profile.
	`wlan virtual-ap <name>`	Create/edit a Virtual AP profile.
Authentication	`aaa authentication-server radius <name>`	Configure a RADIUS server.
	`aaa profile <name>`	Create/edit an AAA profile.
Troubleshooting	`show log wireless`	Display wireless-related logs.
	`debug client <MAC>`	Enable debug for a specific client.
AOS 10 Specific	`show aruba-central`	View Aruba Central connectivity status (on Gateway).
	`show gateways`	List managed Gateways (from Central GUI).

1. Architecture Overview (AOS 8 vs. AOS 10)

Aruba’s wireless architecture has evolved significantly, with AOS 8 relying on on-premises Mobility Master/Controllers and AOS 10 shifting to a cloud-managed model with Aruba Central and Gateways.

Palo Alto Networks Firewall (PAN-OS) Cheatsheet - Complete Reference 2025

Tue, 30 Dec 2025 00:00:00 +0000

This cheatsheet provides a concise, practical reference for Palo Alto Networks Firewall administrators, covering essential PAN-OS concepts, CLI commands, GUI tasks, and troubleshooting tips for real-world enterprise environments. Information is current as of December 2025, primarily referencing PAN-OS 11.1+.

Quick Reference: Most Used Commands

Command/Method	Description	Example
`configure`	Enters configuration mode.	`configure`
`commit`	Saves and applies pending configuration changes.	`commit force`
`show system info`	Displays general system information.	`show system info`
`show session all filter application <app-name>`	Shows active sessions filtered by application.	`show session all filter application ssl`
`test security-policy-match source <src-ip> destination <dst-ip> destination-port <port> application <app>`	Tests which security policy rule matches specific traffic.	`test security-policy-match source 10.1.1.10 destination 192.168.1.50 destination-port 443 application ssl`
`clear session all`	Clears all active sessions (use with caution).	`clear session all`
`ping host <ip-address>`	Pings a host from the firewall.	`ping host 8.8.8.8`
`traceroute host <ip-address>`	Traces the route to a host.	`traceroute host 8.8.8.8`
`debug flow basic`	Starts basic packet flow debugging.	`debug flow basic`
`request restart system`	Restarts the firewall system.	`request restart system`

Basic Operations & System Management

CLI Modes

Mode	Prompt	Description
Operational	`>`	Default mode for monitoring, troubleshooting, and system requests.
Configuration	`#`	For making configuration changes. Entered via `configure`.
Paging	`--More--`	Appears when output exceeds screen size. Press `Space` for next page, `q` to quit.

Basic System Commands

Command/Method	Description	Example
`show system info`	Displays hardware, software, and license details.	`show system info`
`show clock`	Shows current system time.	`show clock`
`set system hostname <name>`	Sets the firewall’s hostname.	`set system hostname PA-FW-01`
`set system timezone <zone>`	Configures the system timezone.	`set system timezone America/New_York`
`request license fetch`	Fetches licenses from Palo Alto Networks.	`request license fetch`
`request software check`	Checks for available PAN-OS updates.	`request software check`
`request software install version <version>`	Installs a specific PAN-OS version.	`request software install version 11.1.0`
`request restart system`	Restarts the firewall.	`request restart system`
`request shutdown system`	Shuts down the firewall.	`request shutdown system`

Configuration Management

Command/Method	Description	Example
`configure`	Enters configuration mode.	`configure`
`show`	Displays current configuration (in config mode).	`show running full`
`set <path> <value>`	Configures a parameter.	`set deviceconfig system dns-setting servers primary 8.8.8.8`
`delete <path>`	Deletes a configuration element.	`delete network interface ethernet ethernet1/1 layer3 ip 192.168.1.1/24`
`commit`	Saves and applies changes.	`commit`
`commit force`	Forces a commit, overriding warnings.	`commit force`
`commit partial <target>`	Commits only specific configuration changes.	`commit partial device-and-vsys`
`save config to <filename>`	Saves the current candidate configuration to a file.	`save config to my_config_backup.xml`
`load config from <filename>`	Loads a configuration from a file.	`load config from my_config_backup.xml`
`revert config`	Discards uncommitted changes.	`revert config`

Network Configuration

Zones and Interfaces

Palo Alto Networks firewalls use security zones to group interfaces with similar security requirements. Policies are applied between zones, not directly between interfaces.

Redis Cheatsheet - Complete Reference 2025

Tue, 30 Dec 2025 00:00:00 +0000

This cheatsheet provides a comprehensive reference for Redis, covering essential commands, data structures, common usage patterns, and best practices for developers. All information is current as of December 30, 2025, reflecting features and recommendations for Redis 7.4.

Quick Reference: Most Used Commands

Command	Description	Example
`SET key value [EX seconds]`	Sets string value of a key, with optional expiration.	`SET mykey "hello" EX 3600`
`GET key`	Gets the string value of a key.	`GET mykey`
`DEL key [key ...]`	Deletes one or more keys.	`DEL mykey anotherkey`
`EXPIRE key seconds`	Sets a timeout on key.	`EXPIRE session:123 1800`
`HSET key field value [field value ...]`	Sets field-value pairs in a hash.	`HSET user:1 name "Alice" age 30`
`HGETALL key`	Gets all fields and values in a hash.	`HGETALL user:1`
`LPUSH key value [value ...]`	Prepends one or more values to a list.	`LPUSH mylist "item1" "item2"`
`RPOP key`	Removes and returns the last element of a list.	`RPOP mylist`
`SADD key member [member ...]`	Adds one or more members to a set.	`SADD tags "tech" "dev"`
`SMEMBERS key`	Returns all members of a set.	`SMEMBERS tags`
`ZADD key score member [score member ...]`	Adds one or more members to a sorted set, or updates their scores.	`ZADD leaderboard 100 "playerA" 150 "playerB"`
`ZRANGE key start stop [WITHSCORES]`	Returns a range of members in a sorted set, by index.	`ZRANGE leaderboard 0 -1 WITHSCORES`
`INFO [section]`	Returns information and statistics about the server.	`INFO memory`
`PING`	Returns PONG if the server is alive.	`PING`

I. Basic Data Types & Operations

Redis is a data structure server, supporting various data types.

Git Cheatsheet - Complete Reference 2025

Tue, 23 Dec 2025 00:00:00 +0000

This cheatsheet provides a comprehensive, quick-reference guide to Git, covering essential commands, advanced operations, workflow best practices, and troubleshooting tips. It’s designed for developers needing fast, accurate information for real-world development scenarios as of December 2025.

Quick Reference: Most Used Commands

Command	Description	Example
`git init`	Initializes a new Git repository.	`git init`
`git clone <url>`	Clones an existing repository.	`git clone https://github.com/user/repo.git`
`git add <file>`	Stages changes for the next commit.	`git add index.html`
`git add .`	Stages all changes in the current directory.	`git add .`
`git commit -m "msg"`	Records staged changes to the repository.	`git commit -m "Add header component"`
`git status`	Shows the working tree status.	`git status`
`git log`	Displays commit history.	`git log --oneline --graph`
`git branch`	Lists, creates, or deletes branches.	`git branch feature/new-feature`
`git checkout <branch>`	Switches to a specified branch.	`git checkout develop`
`git checkout -b <new-branch>`	Creates and switches to a new branch.	`git checkout -b bugfix/login-issue`
`git merge <branch>`	Integrates changes from one branch into another.	`git merge feature/new-feature`
`git push <remote> <branch>`	Uploads local branch commits to remote.	`git push origin main`
`git pull <remote> <branch>`	Fetches and integrates remote changes.	`git pull origin main`
`git remote -v`	Lists configured remote repositories.	`git remote -v`

Getting Started & Configuration

Setup

Command	Description	Example
`git init`	Initializes a new Git repository in the current directory.	`git init`
`git clone <url>`	Clones an existing repository from a URL into a new directory.	`git clone https://github.com/octocat/Spoon-Knife.git`

Basic Configuration

These settings are global unless --local is specified.

HTTP Status Codes, HTTP Headers, CORS Configuration Cheatsheet - Complete Reference 2025

Tue, 23 Dec 2025 00:00:00 +0000

This cheatsheet provides a comprehensive reference for HTTP Status Codes, HTTP Headers, and CORS (Cross-Origin Resource Sharing) configuration. It’s designed for quick lookup, practical examples, and best practices for developers and tech professionals working with web APIs and services.

Quick Reference

Concept	Description	Common Example / Syntax
HTTP Status	Server’s response to a client’s request, indicating success or failure.	`200 OK`, `404 Not Found`, `500 Internal Server Error`
HTTP Header	Metadata sent with HTTP requests and responses.	`Content-Type: application/json`, `Authorization: Bearer ...`
CORS	Mechanism allowing web pages to request resources from a different domain.	`Access-Control-Allow-Origin: https://example.com`
`GET`	Request data from a specified resource.	`GET /users/123`
`POST`	Submit data to be processed to a specified resource.	`POST /users` (with JSON body)
`PUT`	Update a specified resource.	`PUT /users/123` (with JSON body)
`DELETE`	Delete a specified resource.	`DELETE /users/123`
`OPTIONS`	Describe the communication options for the target resource (CORS preflight).	`OPTIONS /api/data`

HTTP Status Codes

HTTP status codes are three-digit numbers returned by a server in response to a client’s request. They are grouped into five classes, indicating the nature of the response.