-a, --all write counts for all files, not just directories\n\
-b, --bytes print size in bytes\n\
-c, --total produce a grand total\n\
- -h, --human use variable sizes, not 512 despite POSIXLY_CORRECT\n\
+ -h, --human print sizes in human readable format (e.g. 1K 234M 2G)\n\
-k, --kilobytes use 1024-byte blocks, not 512 despite POSIXLY_CORRECT\n\
-l, --count-links count sizes many times if hard linked\n\
-m, --megabytes use 1024K-byte blocks, not 512 despite POSIXLY_CORRECT\n\