How to list recursive file sizes of files and directories in a directory?

apt-get install ncdu

It is interactive too so if you want to check on a sub folder just UP, DOWN, and Enter to it.

I guess the easiest way is by typing ls -l, or ls -lh which will provide the file size in human-readable format (KB, MB, etc).

If 'recursively' means listing all the subsequent folders, e.g.:

/foo/
/foo/bar/ ....

Then you should also add parameter R, like ls -lR or ls -lhR

More information for ls can be found by typing man ls

Update:

The following command as Lekensteyn proposed will probably do the job:

du -h --max-depth=1 <folder>

-h is for human-readable
--apparent-size is another way to display sizes as already stated
--max-depth is the level of subfolders you want to go down to.

To get the total size of a directory and all children

du -hs directory/*