change liner source so that we can have good tty config

stdlib/shell.go

@@ -91,7 +91,7 @@ func waitHandler() {
             exit = -1024
             var e *exec.ExitError
             if errors.As(w, &e) {
-                exit = e.Pid()
+                exit = e.ExitCode()
             }
 
             LastExitCode = exit
@@ -156,7 +156,9 @@ func InitShellFeatures() bool {
 func TeardownShell() {
     close(sigChan)
     close(waitChan)
-    // TODO: Exit all processes in the JobMap
+    for k := range JobMap {
+        JobMap[k].Cancel()
+    }
 }
 
 /* Makes and stores a new process in the job control