lcaballero

# filter by request host header
varnishlog -q 'ReqHeader ~ "Host: example.com"'

# filter by request url
varnishlog -q 'ReqURL ~ "^/some/path/"'

# filter by client ip (behind reverse proxy)
varnishlog -q 'ReqHeader ~ "X-Real-IP: .*123.123.123.123"'

# filter by request host header and show request url and referrer header

lcaballero

Docker CLI Tricks

Reference URL: https://medium.com/@clasikas/docker-tips-tricks-or-just-useful-commands-6e1fd8220450

All existing containers (not only running)

docker ps     # show only running
docker ps -a  # show all containers

lcaballero

function isNum(x) {
    return !isNaN(x);
}
function hasX(v) {
    return v && isNum(v.x);
}
function hasY(v) {
    return v && isNum(v.y);
}
function hasXY(v) {

lcaballero

echo "Mock wget"

lcaballero

;; This is typical setup stuff with bootstrap loading of use-package
(require 'package)
(setq package-enable-at-startup nil)
(add-to-list 'package-archives '("melpa" . "http://melpa.org/packages/"))
(add-to-list 'package-archives '("marmalade" . "http://marmalade-repo.org/packages/"))
(add-to-list 'package-archives '("gnu" . "http://elpa.gnu.org/packages/"))
(package-initialize)

(unless (package-installed-p 'use-package)
  (package-refresh-contents)

lcaballero

# :create-user :password :wheel :sudoer :sudo
sudo useradd -G wheel -p "$(openssl passwd)" "admin"

# grep stuff
find . | grep -vE "(.git|./wiki)" | grep -E "\.sh$" | xargs -0 grep -ni "batman"

# :here-doc :variable :here
# save multi-line value from 'here doc' into bash variable
VAR=$(cat <<'END_HEREDOC'
abc'asdf"

lcaballero

#!/bin/bash

function react() {
	npm init -y
	npm install -S \
		react \
		react-dom \
		redux \
	    babel-core \
		babel-loader \

lcaballero

Supported escape sequences:
  ~.  - terminate session
  ~B  - send a BREAK to the remote system
  ~R  - Request rekey (SSH protocol 2 only)
  ~#  - list forwarded connections
  ~?  - this message
  ~~  - send the escape character by typing it twice
(Note that escapes are only recognized immediately after newline.)

Reference:

lcaballero

package main

import (
	"fmt"
	"net/http"
	"os"
)

func main() {
	dir := "."

lcaballero

#!/bin/bash

git stash -q --keep-index
go test --race ./...
RESULT=$?
git stash pop -q

if [ $RESULT -ne 0 ] ; then
	echo "pre-commit tests failed."
	exit 1