An interactive shell is just that; it reads and writes to and from a
terminal (ideally one with a user at it).  A login shell reads and runs
login-related files like /etc/profile and ~/.profile.  An interactive shell
need not be a login shell and vice versa.
On Aug 14, 2011 6:57 PM, "TJ Luoma" <luomat@gmail.com> wrote:
> If there any reason to prefer
>
> if [[ -o interactive ]]
>
> rather than
>
> if [[ -o login ]]
>
> ?
>
> Are they two ways of saying the same thing? If not, could someone
> explain the difference?
>
> Thanks
>
> TjL