shell - Convert a file into CSV with newline as the delimiter -

i've got lot of data new line delimited, copied raw server. however, cannot convert csv replacing \n comma since need have fields. there 9 fields in occasion. how can convert data?
keeping in mind last element doesn't need comma since need retain newline character.

i horrible @ regular expression foo, since have loop being needed, assume need make shell script?

any appreciated.

example data:

name logon user ip address version last login restart required foo1 foo2 foo3 jon weinraub jweinraub 10.18.66.10 3.1.1.1 2013-08-19 14:33:11 no bar1 bar2 bar3 homer simpson .... 

so should be

name,logon user, ip,...foo3 jon weinraub,jweinraub,10.18.66.10,...bar3 homer simpson,.... 

a elaborate way (but it's easy understand , modify) using awk:

create file makecsv.awk following script:

begin {   count = 0;  }  {   count++;   if (count == 9)   {      count = 0;     printf "%s\n", $0;   }   else   {     printf "%s, ", $0;   } } 

then can execute command line with

awk -f makecsv.awk myinputfile > myoutputfile.csv