whitespace - Sed - Adding white spaces to the end of line -

after research here ran across use of sed :

sed 's/$/       /' filein > fileout 

this worked expected in files, , added spaces end of line.

my problem in different file :

aaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbb bbbbbbbbbbbbbbbbbbbbbbbbb ccccccccccccccccccccccccc 

and after running same command append spaces (7) @ end of each line, basicly adds different line , puts 7 spaces there, :

aaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbb(cr) spacesx7(cr)(lf) bbbbbbbbbbbbbbbbbbbbbbbbb ccccccccccccccccccccccccc(cr) spacesx7(cr)(lf) 

could me? thank in advance

try this:

dos2unix < filein | sed 's/$/       /' > fileout