sort & uniq Command

sort Command

sort <filename>
 
# Numeric Sort
sort -n <filename>
 
sort -k 2,2n -k4,4n <filename>

Flags
-r: Reverse Sort
-R: Random Sort
-n: Numeric Sort
-M: Sort Months
-t: Field Separator
-k: Sort Key (1,1 : Single Column Sort , 1,4 : Range Sort , 1.3 : Sort by Character)

uniq Command

sort <filename> | uniq

Flags
-c: Count Occurrence
-d: Show Duplicate Lines
-u: Show Unique Lines