Hi all,
How do i know in which sell am i (from the prompt line)?
or which command tells me (from the prompt line) in which
shell am i??
Lots of regards,
Ultimator.

chsh
can change your shell, and show what the current is.

chsh will get it's information from the SHELL variable. So 'echo $SHELL' should get you the same results.
But I don't know how reliable that value is at all times. If I'm running the ksh and then start a script which uses bash and then echo the $SHELL variable then I still get /bin/ksh instead of /bin/bash. So you would probably have to edit something like the bashrc files to make sure this value is always set properly when a new shell is started.
Another way would be to find out what is running as the current process. Something like:
ls -l /proc/$$/exe