diff --git a/common/cmd_itest.c b/common/cmd_itest.c
index 29f8076..ae2527b 100644
--- a/common/cmd_itest.c
+++ b/common/cmd_itest.c
@@ -71,6 +71,19 @@ static char * evalstr(char *s)
 	/* if the parameter starts with a * then assume a string pointer else its a literal */
 	if (s[0] == '*') {
 		return (char *)simple_strtoul(&s[1], NULL, 16);
+	} else if (s[0] == '$') {
+		int i = 2;
+
+		if (s[1] != '{')
+			return NULL;
+
+		while (s[i] != '}') {
+			if (s[i] == 0)
+				return NULL;
+			i++;
+		}
+		s[i] = 0;
+		return  getenv((const char *)&s[2]);
 	} else {
 		return s;
 	}