sort command tutorial

sort [_OPTION_]... [_FILE_]...  
sort [_OPTION_]... _--files0-from=F_

parameter

option	description
-k	sort by particular column
-b	Ignores leading blanks.
-d	Considers only blanks and alphanumeric characters.
-f	Fold lower case to upper case characters.
-g	Compares according to general numerical value.
-i	Considers only printable characters.
-M	Compares (unknown) < ‘JAN’ < … < ‘DEC’.
-h	Compare human readable numbers (e.g., 2K 1G).
-n	Compares according to string numerical value.
-R	Shuffles, but groups identical keys. See also: shuf
-r	Reverses the result of comparisons.