Linux Which Shell Am I Using?

Which Shell does Ubuntu use?

GNU Bash is the shell used by default in terminals on Ubuntu.

However when scripts are executed on system boot then dash is used, as it is dash that is /bin/sh.

This is defined in the $SHELL environmental variable.

You can check by typing echo $SHELL in the terminal.

How do I switch from shell to bash?

You type in bash . If you want this to be a permanent change the default shell to /bin/bash by editing /etc/passwd .