[firebird-support] can't log-in as user account firebird

[thirdshiftco...@yahoo.com [firebird-support]]

Hi-

I changed firebird to #: passwd myfb at the command-line.

At su firebird I get:

su: failed to execute /bin/nologin: No such file or directory

firebird:x:901:902::/:/bin/nologin

not sure what I am doing wrong. I am using firebird 2.5.4 fedora xfce classic.

Please assist!

Addendum: with the root log-in I can select data from sample db. I 
have SYSDBA account setup with a password and will do a new account once I get 
this 
straightened out.

THANKS!