mauricios

#!/bin/sh

# Check configuration file
sudo varnishd -C -f /path/to/default.vcl -p vcl_dir=/path/to/vcl_dir

# Ban/Purge a URL
sudo varnishadm "ban req.http.host ~ ^<hostname>$ && req.url ~ ^<url>$"

# Change configuration
## Show list of configurations

mauricios

#!/bin/bash

# Clone the old repo using the mirror option
git clone --mirror git@git.my-old-server.com:my-old-repo.git

# Enter the new clonned repo directory
cd my-old-repo.git

# Add the new remote repo
git remote add new_origin git@git.my-new-server.com:my-new-repo.git

mauricios

#!/bin/sh

# Delete last commit already pushed to a remote repository
git reset HEAD^ --hard;
git push origin -f;

# Change remote URL
git remote set-url origin <repo_url>

# Revert local changes to move back to the origin is

mauricios

- Search and replace: :%s/foo/bar/g

- Delete text block: ma + d'a 

- Macro: qd, <commands>, then q, apply with @d and @@ 

- Write as sudo: :w !sudo tee %

- Increase/Decrease number: Ctl+A Ctl+X

mauricios

Generate the GPG key pair

gpg --full-generate-key;

Export public GPG key

Look for your Key ID in using the following command:

mauricios

module.exports = {
  config: {
    fontSize: 14,
    fontFamily: '"Fira Mono", Menlo, "DejaVu Sans Mono", Consolas, "Lucida Console", monospace',
    cursorColor: 'cyan',
    cursorShape: 'BEAM',
    cursorBlink: false,
    foregroundColor: '#ffffff',
    backgroundColor: '#000000',
    borderColor: '#000000',

mauricios

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "s3:ListAllMyBuckets"
            ],
            "Resource": [
                "arn:aws:s3:::my-bucket"

mauricios

# Configure variables
OPENSHIFT_PACKAGE=https://github.com/openshift/origin/releases/download/v3.11.0/openshift-origin-client-tools-v3.11.0-0cbc58b-linux-64bit.tar.gz
OPENSHIFT_HOSTNAME=openshift.xip.io


# Install Docker
sudo yum install docker -y
sudo usermod -aG docker ec2-user

# Add insecure registry to Docker

mauricios

Resize AWS EBS Disk partition

The following commands are rquiered to expoand a partition and resize the file system of an EBS volume. Those steps work in EBS volumes including root volumes and can be done while they are attached to a running instance (zero downtime)

Check the size of the partition

df -H

mauricios

Generate SSH key pair

Use RSA encryption with 4096 bits

ssh-keygen -t rsa -b 4096 -C "my_email@mydomain.com" -f ~/.ssh/myserver.key -P ""

The command above will generate two files, the private key ~/.ssh/myserver.key and the public key ~/.ssh/myserver.key.pub.