cd to the directory calledfinalthat is located within my home directory.

While viewing the file calledmypasswdyou notice that all of the references to the user's shells, the C shell, were entered in upper-case letters. That is not correct.

Create a sed command string that will convertONLYthe references to the user's shellCSHtocshwithin the file calledmypasswdand save the output to a new file callednewpasswdin your home directory.

Be Careful. There are other refernces to CSH in the file.

Which comand string will do this?

sed 's/CSH/csh/g' mypasswd > newpasswd

sed 's/CSH$/csh/g' mypasswd > newpasswd

sed 's/CSH$/csh/g' mypasswd > ~/newpasswd

sed 's/csh$/csh/g' mypasswd > ~/newpasswd