CP file same file name with few changes

[longs]

HI all
I want to copy a file name. Please let me explain myself;

filename20070824

cp filename20070824 test_filename20070824

The problem I have is that I want to use * instead of the date. I want to cp it in such a way that it keeps the name of the file and just adds "test_" at the start of it.
there will be only one file, with the name starting with "filename*"

may be something like
cp filename* test_*

but this command creat a file with the name "test_*"
I want to have "test_filename20070824"

Thanks for your help

 

[p5wizard]

for fn in filename_*
do
[ -f $fn ] && cp $fn test_$fn
done

or some similar construction with more restrictive wildcards.



HTH,

p5wizard