How can I repeat a character in bash?

Question

How could I do this with echo?

perl -E 'say "=" x 100'

Answer 1

for i in {1..100}
do
  echo -n '='
done
echo

Answer 2

Here's two interesting ways:

ubuntu@ubuntu:~$ yes = | head -10 | paste -s -d '' -
==========
ubuntu@ubuntu:~$ yes = | head -10 | tr -d "\n"
==========ubuntu@ubuntu:~$ 

Note these two are subtly different - The paste method ends in a new line. The tr method does not.