quot —
display disk space occupied by each user
  
    | quot | [ -acfhknv] [filesystem
      ...] | 
quot is used to gather statistics about the disk usage
  for each local user.
The following options are available:
  - -a
- Include statistics for all mounted filesystems.
- -c
- Display three columns containing number of blocks per file, number of
      files in this category, and aggregate total of blocks in files with this
      or lower size.
- -f
- For each user, display count of files and space occupied.
- -h
- Estimate the number of blocks in each file based on its size. Despite that
      this doesn't give the correct results (it doesn't account for the holes in
      files), this option isn't any faster and thus is discouraged.
- -k
- By default, all sizes are reported in 512-byte block counts. The
      -koptions causes the numbers to be reported in
      kilobyte counts.
- -n
- Given a list of inodes (plus some optional data on each line) in the
      standard input, for each file print out the owner (plus the remainder of
      the input line). This is traditionally used in the pipe:
    
    
ncheck filesystem | sort +0n | quot -n filesystem
    
 to get a report of files and their owners. 
- -v
- In addition to the default output, display the number of files not
      accessed within 30, 60 and 90 days.
  - BLOCKSIZE
- If the environment variable BLOCKSIZEis set, and
      the-koption is not specified, the block counts
      will be displayed in units of that size block.