copy multiple files and give prefix and keep originals

Question

how do i copy files in unix. i want to keep the originals and add a prefix to the originals.

i have the following:

file1.csv
file2.csv
file3.csv
file4.csv
...
fileX.csv

what I will end up with after giving the command(with "H_" being the prefix in this example):

file1.csv
file2.csv
file3.csv
file4.csv
...
fileX.csv
H_file1.csv
H_file2.csv
H_file3.csv
H_file4.csv
...
H_fileX.csv

I was looking at the cp or mv command, but have no luck yet

Answer 1

for file in *.csv; do
    cp "$file" "H_$file"
done