Matrixbirds

# tcpdump usage recipes:
# tcpdump -i <interface> <BPF: Berkeley Packet Filter> [options]
sudo tcpdump -i lo0 '(host localhost) and (port 4399)' -vvv -tt 4


# watch with pipe chain command
watch -cd 'netstat -tan | head -n2; netstat -tan | sort | egrep 4399'

# netstat usage recipes:
# netstat [options]

Matrixbirds

mkdir ~/.npm-global
npm config set prefix '~/.npm-global'
echo "export PATH=~/.npm-global/bin:$PATH" >> ~/.zshrc
source ~/.zshrc

Matrixbirds

" Modeline and Notes {
" vim: set sw=4 ts=4 sts=4 et tw=78 foldmarker={,} foldlevel=0 foldmethod=marker spell:
"
"                    __ _ _____              _
"         ___ _ __  / _/ |___ /      __   __(_)_ __ ___
"        / __| '_ \| |_| | |_ \ _____\ \ / /| | '_ ` _ \
"        \__ \ |_) |  _| |___) |_____|\ V / | | | | | | |
"        |___/ .__/|_| |_|____/        \_/  |_|_| |_| |_|
"            |_|
"

Matrixbirds

alias pbcopy="xclip -selection clipboard"

## dependencies resolver only for ubuntu LTS

```bash
sudo apt-get install xclip
```
```bash
alias pbcopy="xclip -selection clipboard"
alias say="echo $1 | espeak"

Matrixbirds

ssh -f -L <local-port>:<rds-address>:<rds-port> <jump_server> -N # run in background
mysql -u<rds-username> -P <local-port> --host='127.0.0.1' -p

psql -h 127.0.0.1 -p <local-port> -U <username> <db_name> # after entered input your password


## lsof 列出建立TCP链接到　xx　port的　相关进程
lsof -n -i4TCP:<portno> | grep <process-id>

Matrixbirds

sudo apt-get install libcap2-bin
sudo setcap 'cap_net_bind_service=+ep' $(readlink -f $(which node))
node ./app

Matrixbirds

sudo yum install -y yum-utils
sudo yum-config-manager \
    --add-repo \
    https://download.daocloud.io/docker/linux/centos/docker-ce.repo
sudo yum install -y -q --setopt=obsoletes=0 docker-ce-17.03.2.ce* docker-ce-selinux-17.03.2.ce*
sudo systemctl enable docker
sudo systemctl start docker
sudo service docker status

Matrixbirds

require 'active_model_serializers'
module ActiveModelSerializers
  module Adapter
    class Toastio < Base
      def serializable_hash(options = nil)
        @__options = options = serialization_options(options)

        json = Attributes.new(serializer, instance_options).serializable_hash(options)
        serialized_hash = { :data => json }
        serialized_hash[:success] = success

Matrixbirds

sudo apt install autoconf bison build-essential libssl-dev libyaml-dev \
  libreadline-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm-dev  git -y
vim ~/.bashrc

export PATH="$HOME/.rbenv/bin:$PATH"
eval "$(rbenv init -)"
  
git clone https://github.com/rbenv/rbenv.git ~/.rbenv
git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build

Matrixbirds

brew install jsonpp

curl -XPOST URI.json | jsonpp