Environment Variable for Local Directory?

This seems like a simple thing, but I can't seem to find an environment variable that has the local/current directory stored in it. I have a script that writes out the files in a directory. I want to append the full path to the file names in the output file.

make your own: pwd is the current directory

thisdir=$(pwd)
ls | 
while read filename
do
    echo "${thisdir}/${filename}"
done

Jim - thanks so much!!!

You have two choices ...
$ set
Would have shown you one ...

$ echo $pwd

Then there is the cmd:
$ pwd

-Enjoy
fh : )_~

thank you - much appreciated