List the file in KB/GB/MB on ESX/Linux

I always get into trouble when I have to list files by GB/MB on ESX host. Even most experience UNIX admin sometimes does not know the correct switch

ls -lh
[root@xxxxx]# ls -lh
total 43G
-rwxr-xr-x 1 root root 8.7G Oct 30 11:40 All_Versions_VL.iso
drwxr-xr-x 1 root root 1.9K Dec 3 03:15 xxx
drwxr-xr-x 1 root root 2.1K Nov 6 09:14 axxx
drwxr-xr-x 1 root root 560 Aug 27 12:46 xxx
-rw------- 1 root root 34G Mar 18 2008 xxx
drwxr-xr-x 1 root root 2.1K Dec 2 12:02 Dxxx2
drwxr-xr-x 1 root root 2.1K Nov 7 17:04 xxx