how to change user info?
 

mei@ubuntu:/$ grep 'mysql' /etc/passwd
mysql:x:113:123:MySQL Server,,,:/nonexistent:/bin/false

I want change user account "mysql" info like is:
mysql:x:113:123:MySQL Server,,,:/nonexistent:/bin/bash

what should I do ? thanks

ok, well to answer the question, you can just change it in a text editor. you could also use chsh. But WHY?? you should never be logging in as a service account, that's a really really bad idea.

Try the chsh command. Anyway, why do you need to assign a login shell to the mysql user? It is not intended for login and it could raise some security risk.

Edit: beaten by acid :)

I am just looking some document about Running Multiple MySQL Instances on One Machine . I want use account "mysql" on bash terminal to browse mysql datadir. and I found I cannot login when using "mysql" account.

yeah, so... DON'T do that. There is a reason why things are configured how they already are. just use root.