gistfile1.txt

#!/usr/bin/env bash

# Bash scope experiments

func ()
{
  echo "in func: param1: $1, param2: $2, var1: $var1, var2: $var2"
} 

var1=$1
var2=$2
echo "1: param1: $1, param2: $2, var1: $var1, var2: $var2"
func
echo "2: param1: $1, param2: $2, var1: $var1, var2: $var2"



Result of running the script:

$ sh test.sh hello world
1: param1: hello, param2: world, var1: hello, var2: world
in func: param1: , param2: , var1: hello, var2: world
2: param1: hello, param2: world, var1: hello, var2: world