can you help me

[Sudheer Gunturi]

i am trying to grep three fields of a file in to another file but i am not
getting the required output

my requirement is:

i hav following fields in a file as:

1.query

2.lang=

3.ip address

4.browser etc....

i want to grep only two fields in to another file to get the output. this
must be done with out giving the field names

it worked well for two fields with the command:

grep  "lang=" filename | grep -o -P "query=" > output filename

But while i was trying to grep 3 fields to another output file its not
working..

grep  "lang=" filename | grep -o -P "query=" | grep -o -P "ipaddress" >
output filename


for ip address i gave like this "[0-9]+[.][0-9]+[.][0-9]+[.][0-9] "

is there any way to do this

thanks  in advance....
sudheer