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## DOCKER COMPOSE

## Run
docker-compose up                 # Run compose file
docker-compose up -d              # Run compose file in background

## Restart 
docker-compose restart

### Only build

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docker build -t friendlyhello .                        # Create image using this directory's Dockerfile
docker build -t <tag_name> .                           # Docker build
docker run --name <container_name> <image_name>        # Run a container
docker run -p 4000:80 friendlyhello                    # Run "friendlyname" mapping port 4000 to 80
docker run -d -p 4000:80 friendlyhello                 # Same thing, but in detached mode
docker run --rm -it --name <container_name> -d -p <DockerHostPort:ContainerPort> -v </path/in/host:/path/in/container> <image_name> bash     # Run a container with some arguments

docker container ls                                    # List all running containers
docker container ls -a                                 # List all containers, even those not running
docker container stop <hash>                           # Gracefully stop the specified container

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How To Use OpenSSL s_client To Check and Verify SSL/TLS Of HTTPS Webserver?

OpenSSL provides different features and tools for SSL/TLS related operations. s_lient is a tool used to connect, check, list HTTPS, TLS/SSL related information. Simply we can check remote TLS/SSL connection with s_client . In these tutorials, we will look at different use cases of s_client .

Check TLS/SSL Of Website

The basic and most popular use case for s_client is just connecting remote TLS/SSL website. We will provide the web site with the HTTPS port number. In this example we will connect to the poftut.com .

$ openssl s_client -connect poftut.com:443

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#!/bin/bash

brew update                       # Fetch latest version of homebrew and formula.

brew tap caskroom/cask            # Tap the Caskroom/Cask repository from Github using HTTPS.

brew search virtualbox            # Searches all known Casks for a partial or exact match.
brew cask info virtualbox         # Displays information about the given Cask

brew cask install virtualbox      # Install the given cask.

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Save a file you edited in vim without the needed permissions

w !sudo tee %

Global

• :help keyword - open help for keyword
• :saveas file - save file as
• :close - close current pane
• K - open man page for word under the cursor

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How to Auto Start a Guest VM in Oracle VM XEN.md

1. Log into 'Oracle VM Manager' CLI

ssh -l admin <Oracle VM Manager IP> -p 1000

2. Find the guest VM 'Config File Mounted Path'

show vm name=

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Get a list of NIC names using

ifconfig -a                                   # If you have net-tools instaled
Or
ip -a

Configure network card

vi /etc/sysconfig/network-scripts/ifcfg-en0xx # [Replace 'en0xx' with your Network Card e.g. en0]