Which Linux command shows which shell you are in?

Answer 1

to get the current shell :

echo $0

also Use the command ps with -p {pid} option, which selects the processes whose process ID numbers appear in pid. Use following command to find out what shell you are in:

ps -p $$

Answer 2

The 'pwd' command (short for "print working directory" should show you the current directory, assuming your shell doesn't already display it.

Answer 3

pwd returns the current directory.