/bin/app_mkdir /RAMDISK0/sub_dir
/bin/app_touch /RAMDISK0/sub_dir/ramfile1
/bin/app_touch /RAMDISK0/sub_dir/ramfile2
/bin/app_echo /RAMDISK0/sub_dir/ramfile1
/bin/app_cat /RAMDISK0/sub_dir/ramfile1
/bin/app_ls /RAMDISK0/sub_dir
/bin/app_ls /RAMDISK0
END END