How can I add a string to the beginning of each file in a folder in bash?

Question

I want to be able to prepend a string to the beginning of each text file in a folder. How can I do this using bash on Linux?

Answer 1

You can do this as well:

for f in *; do
  cat <(echo "someline") $f > tempfile
  mv tempfile $f
done

It's not much different from the 1st post but does show how to treat the output of the 'echo' statement as a file without having to create a temporay file to store the value.