#!/usr/bin/env luash

-- Environment variables (clean syntax)
print("Hello " .. $USER .. "!")

-- Variable assignment  
$MY_VAR = "some value"

--  Shell commands with backticks
files = `ls -la`
current_dir = `pwd`

-- Interactive commands
!ls

-- The power of Lua + shell
if `test -f README.md` ~= "" then
    lines = `wc -l < README.md`
    print("README has " .. lines .. " lines")
end