linux command to check file size in bytes ls code example

Example 1: display file size in mb in linux

prashad@ubuntu:~/working_dir/opencv$ ls -lh CMakeLists.txt
-rw-r--r-- 1 prashad prashad 65M Sep 29 01:05 CMakeLists.txt
prashad@ubuntu:~/working_dir/opencv$ 


NOTE:
To display the file sizes in units like 7K, 5M, 8.2G, etc… use the -lh option with  ls. 
"ls -lh"

Example 2: ls human readable size

ls -l --block-size=M

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