`$HTPASSWD_BIN -b $HTPASSWD_FILE $user "$pwd"`;

##</code><code>##

     htpasswd encrypts passwords using either a  version  of  MD5
     modified for Apache, or the system's crypt() routine.  Files
     managed by htpasswd may contain  both  types  of  passwords;
     some  user  records  may  have MD5-encrypted passwords while
     others in the same file may have  passwords  encrypted  with
     crypt().