Prepend to multiple files in bash/osx terminal

find ./ -name "somename.txt"

find ./ -name somename.txt -exec sed -e '1i
My new text here` {} ;

find ./ -name somename.txt -exec sed -i .bak -e '2q;1i
My new text here` {} ;

find . -name "somefiles-*-.txt" -type f | while read line; do  sed -i 'iThis text gets prepended' -- "$line"; done

find . -name "somefiles-*-.txt" -type f | xargs sed -i 'iGets prepended' --

find . -name "somefiles-*-.txt" -type f -exec sed -i 'iText that gets prepended (dont remove the i)' -- '{}' ;

find ./ -name "somename.txt" -print0 | xargs -0 -n 1 prepend_stuff_to

find . -name "somename.txt" | while read a; do prepend_stuff_to "$a" ; done

find . -name "somename.txt -exec prepend_stuff_to "{}" ;