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Parsing the output of ls is never a good idea for any reason. Using find this way:
- works with files that have spaces in their names.
- actually lists "sub folders" and not of all files and folders.
- does not break if there are a huge number of files in the current directory.
There are 2 alternatives - vote for the best!
This allows the output to be sorted from largest to smallest in human readable format.
If you can do better, submit your command here.
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alternative is
ncdu .