mattes

if _, err := os.Stat("/path/to/whatever"); os.IsNotExist(err) {
	// path/to/whatever does not exist
}

if _, err := os.Stat("/path/to/whatever"); !os.IsNotExist(err) {
	// path/to/whatever exists
}

b-

    # Add this to your ~/.config/fish/config.fish
    # Syntax:
    # To just rerun your last command, simply type '!!'
    # This forked version supports "sudo !!" via two functions.
    function !!
        eval $history[1] $argv
    end function
    
    function sudo
    if test $argv

kachayev

Channels Are Not Enough

... or Why Pipelining Is Not That Easy

Golang Concurrency Patterns for brave and smart.

By @kachayev

Intro

segphault

package main

import (
	"code.google.com/p/gcfg"
	"fmt"
	r "github.com/dancannon/gorethink"
	irc "github.com/fluffle/goirc/client"
	"log"
	"strings"
)

msoap

//usr/bin/env go run $0 "$@"; exit
package main

import (
	"fmt"
	"os"
)

func main() {
	fmt.Println("Hello world!")

jhenahan

if test -n $HOME
  set -l NIX_LINK $HOME/.nix-profile

  if test ! -L $NIX_LINK
    echo "creating $NIX_LINK" >&2
    set -l _NIX_DEF_LINK /nix/var/nix/profiles/default
    /nix/store/cdybb3hbbxf6k84c165075y7vkv24vm2-coreutils-8.23/bin/ln -s $_NIX_DEF_LINK $NIX_LINK
  end
  
  set -x PATH $NIX_LINK/bin $NIX_LINK/sbin $PATH

julz

package main

import (
	"fmt"
	"os"
	"os/exec"
	"syscall"
)

func main() {

mikeatlas

# See docs/examples
# http://doc.gitlab.com/ce/ci/quick_start/README.html
# http://doc.gitlab.com/ce/ci/yaml/README.html

# GitLab CI template for Go tests. Note this installs
# a new working copy of Go in a non-standard path such
# that sudo/root is not needed for the install stage.

# note that this particular install-environment stage
# is overly verbose in order to debug anything tricky

m-ou-se

# Download latest archlinux bootstrap package, see https://www.archlinux.org/download/
wget 'ftp://ftp.nluug.nl/pub/os/Linux/distr/archlinux/iso/latest/archlinux-bootstrap-*-x86_64.tar.gz'

# Make sure you'll have enough entropy for pacman-key later.
apt-get install haveged

# Install the arch bootstrap image in a tmpfs.
mount -t tmpfs none /mnt
cd /mnt
tar xvf ~/archlinux-bootstrap-*-x86_64.tar.gz --strip-components=1

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?