diff --git a/01_phase_rust_src/sv/src/main.rs b/01_phase_rust_src/sv/src/main.rs
index 20097a0..2304b2d 100644
--- a/01_phase_rust_src/sv/src/main.rs
+++ b/01_phase_rust_src/sv/src/main.rs
@@ -5,13 +5,40 @@ mod parser;
 use std::env;
 
 fn main() {
+
+    // def env variables.
+    let svdir_env = env::var("SVDIR");
+    let svwait_env = env::var("SVWAIT");
+
+    let svdir_var = match svdir_env {
+        Ok(var) => var,
+        Err(..) => "/run/runit/service".to_string(),
+    };
+
+    let svwait_var = match svwait_env {
+        Ok(env) => match env.parse::<i32>() {
+            Ok(var) => var,
+            Err(..) => 7,
+        },
+        Err(..) => 7,
+    };
+
+    dbg!(svdir_var);
+    dbg!(svwait_var);
+
+
+    // run the parser
     let args: Vec<String> = env::args().collect();
 
-    // args
     let arg_parser: Vec<String> = parser::parse_args(args);
 
     dbg!(arg_parser);
 
+
+    // TODO: Interpret the flags given if some are given.
+    // TODO: Set the command if it is given
+    // TODO: Exec the command on all given services.
+
+    
     
-    //dbg!(args);
 }