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
}

numist

def get_local_timezone_str
  # Yes, this is actually a shell script…
  olsontz = `if [ -f /etc/timezone ]; then
    cat /etc/timezone
  elif [ -h /etc/localtime ]; then
    readlink /etc/localtime | sed "s/\\/usr\\/share\\/zoneinfo\\///"
  else
    checksum=\`md5sum /etc/localtime | cut -d' ' -f1\`
    find /usr/share/zoneinfo/ -type f -exec md5sum {} \\; | grep "^$checksum" | sed "s/.*\\/usr\\/share\\/zoneinfo\\///" | head -n 1
  fi`.chomp

ajstarks

package main

import (
	"github.com/ajstarks/svgo"
	"os"
)

var canvas = svg.New(os.Stdout)

// sparkline defines the components of the sparkline: