Actually the question is not quite identical, just very similar. You could however always try reading the man pages, the command is the same passwd and if you just spent a minute or two reading man passwd you would know everything you will ever need to know about changing passwords on a Unix box.
After I use the "passwd -d0 userid" , now , some users can't change their own password, the error is as below, #passwd passwd: Authentication token manipulation error , can suggest how to fix it? thx.
