I have the following output

ssh-rsa aaaaaaaaaaa bbbbbbbbbbbbb cccccccccccccc ddddddddddddddddd eeeeeeeeeeeeeeee mail: [email protected]

I wanted to remove all spaces between ssh-rsa and mail:

So I will get this result

ssh-rsa aaaaaaaaaaabbbbbbbbbbbbbccccccccccccccdddddddddddddddddeeeeeeeeeeeeeeee mail: [email protected]