How to show file size on disk

Hi, This scripts shows how to show directory content with size of files:

option 1) using awk

ls -l | awk '{printf "%s %i %s %s %.3fMB %s %i %s %s\n", $1,$2,$3,$4,$5/1024000,$6,$7,$8,$9}' 

 option 2) using ls

ls -las t_ts* --block-size=1M 

best, 
tecbea