Sort lines of text

Opts	Long Option	Description
-b	–ignore-leading-blanks	Ignore leading blanks; sort by first non-whitespace char
-f	–ignore-case	Make sorting case-insensitive
-n	–numeric-sort	Sort based on numeric evaluation of a string
-r	–reverse	Sort in reverse order
-k	–key=field1[,field2]	sort based on key field located from field1 to field2
-m	–merge	Treat each argument as the name of a presorted file
-o	–output=file	Send sorted output to file
-t	–filed-separator=char	Define the field-separator by char. Default is spaces or tabs.

Common sort Options

Example: du -s /usr/share/* | sort -nr | head