diff --git a/src/exec-stack.ts b/src/exec-stack.ts
index 8d3d701..806da02 100644
--- a/src/exec-stack.ts
+++ b/src/exec-stack.ts
@@ -14,12 +14,23 @@ export class ExecStack {
       .concat(args);
   }
 
-  async exec(args: string[]): Promise<number> {
-    return await exec.exec("stack", this.stackArguments.concat(args));
+  async exec(args: string[], options?: exec.ExecOptions): Promise<number> {
+    return await exec.exec("stack", this.stackArguments.concat(args), options);
   }
 
-  async read(_args: string[]): Promise<string> {
-    return "TODO";
+  async read(args: string[]): Promise<string> {
+    let stdout = "";
+
+    const options: exec.ExecOptions = {
+      listeners: {
+        stdout: (data: Buffer) => {
+          stdout += data.toString();
+        },
+      },
+    };
+
+    await this.exec(args, options);
+    return stdout;
   }
 
   async parse<A>(args: string[], f: (stdout: string) => A): Promise<A> {