In computer language, a shell is a prompt where the user can type a specific command. After accepting the commands entered by the user, the shell passes them to the application that will perform the said commands.
Microsoft Windows is one of the most well-known operating systems that use a shell. Apart from the Windows shell, there are other types of shells created by certain companies. An example of this is Korn, which is a shell developed by AT&T.
Changing the shell consists of a few steps. If you have Windows as your operating system, you should first have a set of replacement shells aside from the one you are currently using. You can find these components in shell information sites such as Shell-Shocked.Org.
After you have found a replacement shell, you need to open Regedit. You can do this by clicking on the Start Menu, clicking on Run, and entering Regedit in the edit field of the Run dialog box. Once Regedit is loaded, go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon. You need to find the option for the shell and change the shell from Explorer.Exe to the new one by indicating its full path. You can then save the changes and exit Regedit.
To see the newly loaded shell, you need to log out and log back in. If the new shell does not appear, repeat the above steps. If the new shell still does not appear, you can try using other shells present in shell information sites.