The -a option prints the number of blocks for every file in a directory. Normally counts are printed only for contained directories.

The -f option suppresses the printing of warning messages.

The -n option prints the size in bytes and the name of each file; it sets -a.

The -t option prints, in the format of du -n, the modified time of each file rather than the size. If the options -tu are specified then the accessed time is printed.

The -q option prints, in the format of du -n, the QID path of each file rather than the size.

The -s option causes du to descend the hierarchy as always, but to print only a summary line for each file.

The -e option causes du to print values (sizes, times or QID paths) in `scientific notation' via print(2)'s %g.

The -h option causes du to print values (sizes, times or QID paths) in scientific notation, scaled to less than 1024, and with a suitable SI prefix (e.g., G for binary gigabytes).

The -p option causes du to print values (sizes, times or QID paths) in units of SI-prefix. Case is ignored when looking up SI-prefix. An empty SI-prefix corresponds to a scale factor of 1 (e.g., print sizes in bytes).

% du -sepg /tmp .6960154 /tmp

Print the size of /tmp in bytes and in scientific notation:

% du -sep '' /tmp 7.473408e+08 /tmp