Implemented basic path util.

src/cmd/goblin/main.go

@@ -25,6 +25,7 @@ import(
 	"github.com/surdeus/goblin/src/tool/grange"
 	"github.com/surdeus/goblin/src/tool/in"
 	"github.com/surdeus/goblin/src/tool/useprog"
+	"github.com/surdeus/goblin/src/tool/path"
 )
 
 func main() {
@@ -52,6 +53,7 @@ func main() {
 		"range" : mtool.Tool{grange.Run, "too lazy"},
 		"in" : mtool.Tool{in.Run, "filter strings from stdin that aren not in arguments"},
 		"useprog" : mtool.Tool{useprog.Run, "print the name of the first existing program in arg list"},
+		"path" : mtool.Tool{path.Run, "print cross platform path based on cmd arguments"},
 	}
 
 	mtool.Main("goblin", tools)

src/tool/path/main.go

@@ -0,0 +1,12 @@
+package path
+
+import (
+	"path/filepath"
+	"fmt"
+)
+
+func Run(args []string) {
+	path := filepath.Join(args[1:]...)
+	fmt.Print(path)
+}
+