minor changed

msh.c

@@ -136,7 +136,7 @@ char *getPrompt() {
 		execlp("bash", "bash", "-i", "-c", "\
 			ver=$(bash --version | head -n 1 | awk \'{print $4}\' | grep -o \"...\");\
 			check_ver=$(echo -e \"${ver}\n4.3\" | sort -V | head -n 1);\
-			if [[ \"${ver}\" == \"${check_ver}\" ]]; then\
+			if [[ \"${ver}\" == \"4.3\" ]]; then\
 			  echo \"[${USER}@${pwd}]\";\
 			else\
 			  echo \"${PS1@P}\";\