What is difference between shell and eshell in emacs?

Question

What is the difference between eshell (M-x eshell) and shell (M-x shell) in emacs. Both seems to work same but when i try to run su command or sudo command in eshell then it create a buffer named tramp/su root:localhost. but don't do the work which i want to do as super user.

Paraphernalia

Sorry, not a programming question, please try superuser.com . (I didn't downvote your question). Good luck. – European

Answer 1

In short eshell is a shell emulator (written in Emacs-Lisp), while shell is an interface to sh or whatever (external) system shell you're using.

eshell should behave like most "Bourne-style" shells that you're familiar with, but does not have the external dependency that shell has. Thus, it can be run on any system that runs emacs.

Idioplasm

Thanks for this clarification. Please answer me another question which i have described in question body. – Paraphernalia

@msankhala, eshell uses several builtin commands, sudo is one of them. To use system's sudo, try *sudo command. – Difference