How do I switch to bash in Linux?

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

How do I switch from shell to bash?

Create a Temporary Change to the BASH Prompt

You can change the BASH prompt temporarily by using the export command. This command changes the prompt until the user logs out. You can reset the prompt by logging out, then logging back in.