diff --git a/README.md b/README.md
index 88f7682..90bc63e 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,6 @@
 TODO:
 - [ ] Make free-ing data consistent with null pointers.
 - [ ] Add documentation throughout (ownership, docstrings, etc.).
-- [ ] Have main.c return status code of run.sh.
 - [ ] Organize variables in each function to the top?
 
 CLI utility for initializing projects in reproducible ways.
diff --git a/include/error.h b/include/error.h
index f5ce2ea..bf00fc2 100644
--- a/include/error.h
+++ b/include/error.h
@@ -22,6 +22,7 @@ enum ErrorCode {
   ERROR_VALIDATOR_FIELD_PROMPT_INVALID,
 
   ERROR_EVALUATOR_RUN_SH_NOT_FOUND,
+  ERROR_EVALUATOR_RUN_SH_NOT_EXEC,
   ERROR_EVALUATOR_RESPONSE_INVALID,
 };
 
diff --git a/include/evaluator.h b/include/evaluator.h
index 809a93f..031d5e0 100644
--- a/include/evaluator.h
+++ b/include/evaluator.h
@@ -5,8 +5,10 @@
 #include "error.h"
 #include "validator.h"
 
-struct Error *evaluate_spec_json(
-  const struct Config *const config, const struct DynArray *const prompts
+int evaluate_run_sh(
+  const struct Config *const config,
+  const struct DynArray *const prompts,
+  struct Error **error
 );
 
 #endif /* _BOOTSTRAP_EVALUATOR_H */
diff --git a/main.c b/main.c
index f7a7cfb..5f2cd34 100644
--- a/main.c
+++ b/main.c
@@ -38,13 +38,13 @@ static int run(const char *root_dir, const char *target) {
     goto cleanup_parsed;
   }
 
-  if ((error = evaluate_spec_json(config, prompts))) {
-    fprintf(stderr, "%s", error->message);
+  if ((retval = evaluate_run_sh(config, prompts, &error))) {
+    if (error) {
+      fprintf(stderr, "%s", error->message);
+    }
     goto cleanup_parsed;
   }
 
-  retval = EXIT_SUCCESS;
-
 cleanup_prompts:
   if (prompts) {
     dyn_array_free(prompts);
@@ -61,6 +61,7 @@ cleanup_config:
 cleanup_cwd:
   free(cwd);
   error_free(error);
+
   return retval;
 }
 
diff --git a/src/evaluator.c b/src/evaluator.c
index 11dbbd5..fdcbee8 100644
--- a/src/evaluator.c
+++ b/src/evaluator.c
@@ -24,17 +24,25 @@ static struct Error *find_run_sh(const struct Config *const config) {
     );
   }
 
-  // TODO: Check run.sh is executable.
+  if (!(sb.st_mode & S_IXUSR)) {
+    return ERROR_NEW(
+      ERROR_EVALUATOR_RUN_SH_NOT_EXEC,
+      config->target,
+      "/run.sh is not executable."
+    );
+  }
 
   return 0;
 }
 
-struct Error *evaluate_spec_json(
-  const struct Config *const config, const struct DynArray *const prompts
+int evaluate_run_sh(
+  const struct Config *const config,
+  const struct DynArray *const prompts,
+  struct Error **error
 ) {
-  struct Error *error = find_run_sh(config);
-  if (error) {
-    return error;
+  *error = find_run_sh(config);
+  if (*error) {
+    return EXIT_FAILURE;
   }
 
   if (prompts) {
@@ -61,8 +69,7 @@ struct Error *evaluate_spec_json(
 
   free(filepath);
 
-  // TODO: Want to return this status out.
-  int status = system(command);
-
-  return 0;
+  int exit_code = system(command);
+  free((void *)command);
+  return WEXITSTATUS(exit_code);
 }