#!/usr/bin/env luash
-- Basic Luash Demo: Environment Variables and Shell Commands

print("=== Basic Luash Features ===\n")

-- Environment variable access (clean syntax)
print("1. Environment Variables:")
print("   User: " .. $USER)
print("   Shell: " .. $SHELL) 
print("   Home: " .. $HOME)

-- Environment variable assignment
print("\n2. Setting Environment Variables:")
$MY_VAR = "Hello from Luash!"
print("   Set MY_VAR = " .. $MY_VAR)

-- String literals preserve $ symbols
print("\n3. Strings preserve $ literals:")
print("   This prints literally: $USER and $HOME are variables")

-- Shell command execution with backticks
print("\n4. Shell Commands:")
hostname = `hostname`
print("   Hostname: " .. hostname)

date_info = `date +"%Y-%m-%d %H:%M:%S"`
print("   Current time: " .. date_info)

-- Interactive commands for direct output
print("\n5. Interactive Commands:")
print("   Directory listing:")
!ls -la

print("\n6. Combining Lua logic with shell:")
files = `ls -1`
file_count = 0
for line in files:gmatch("[^\n]+") do
    file_count = file_count + 1
end
print("   Found " .. file_count .. " files in current directory")