quot - summarize file system ownership
quot [ option ] ... [ filesystem ]
Quot prints the number of blocks in the named filesystem currently
owned by each user. If no filesystem is named, a default name is
assumed. The following options are available:
-n Cause the pipeline ncheck filesystem | sort +0n | quot -n
filesystem to produce a list of all files and their owners.
-c Print three columns giving file size in blocks, number of files
of that size, and cumulative total of blocks in that size or
-f Print count of number of files as well as space owned by each
Default file system varies with system.
/etc/passwd to get user names
Holes in files are counted as if they actually occupied space.