wow

interpolation_demo.luash

@@ -0,0 +1,31 @@
+#!/usr/bin/env luash
+-- Variable Interpolation Demo
+
+print("=== Variable Interpolation in Shell Commands ===\n")
+
+print("1. Basic variable interpolation:")
+service = "ssh"
+result = `pgrep #{service} | wc -l`
+print("   Processes named '" .. service .. "': " .. result)
+
+print("\n2. Multiple variables in one command:")
+dir = "/tmp" 
+pattern = "*.log"
+files = `find #{dir} -name #{pattern} 2>/dev/null | wc -l`
+print("   Files matching '" .. pattern .. "' in " .. dir .. ": " .. files)
+
+print("\n3. Network connectivity check:")
+host = "google.com"
+ping_result = `ping -c 1 #{host} >/dev/null 2>&1 && echo "ok" || echo "fail"`
+print("   " .. host .. " is " .. (ping_result == "ok" and "reachable" or "unreachable"))
+
+print("\n4. Dynamic file operations:")
+filename = "README.md"
+if `test -f #{filename}` ~= "" then
+    lines = `wc -l < #{filename}`
+    print("   " .. filename .. " has " .. lines .. " lines")
+else
+    print("   " .. filename .. " not found")
+end
+
+print("\n✨ Use #{variable} syntax to substitute Lua variables into shell commands!")