Given a list of links, this module will group similar links (or find unique links) and write them to separate files. 

e.g. URL list -- 
/level1/uid8
/level1/level2/gid6
/status
/level1/uid10
/level1/level2/gid0
/xyz
/level1
/level1
/level1
/level1/level2

e.g. output (given groupsize of 2)
Then this will list the following in file 1 (URLs which could not be grouped) -- 
/status
/xyz
This will exist in file 2 -- 
/level1/uid8
/level1/uid10
Contents of file 3 -- 
/level1/level2/gid0
/level1/level2/gid6
Contents of file 4 -- 
/level1/level2
conents of file 5 -- 
/level1
/level1
/level1