Started working on running the pipeline

exec.go

@@ -0,0 +1,19 @@
+package scriptx
+
+import (
+	"fmt"
+	"os"
+)
+
+type Runnable interface {
+	Stdout() (int, error)
+}
+
+func Run(pipes ...Runnable) {
+	for _, pipe := range pipes {
+		if _, err := pipe.Stdout(); err != nil {
+			fmt.Fprintf(os.Stderr, "%v\n", err)
+			os.Exit(1)
+		}
+	}
+}