Can I revert to sh from bash?

Yes, you can revert the user's shell from bash back to sh using the usermod command.

Command:

To change the shell of the user joker back to sh, you would use:

sudo usermod -s /bin/sh joker

Explanation:

• sudo: Runs the command with superuser privileges.
• usermod: The command used to modify user accounts.
• -s: Specifies the new login shell.
• /bin/sh: The path to the shell you want to set (in this case, sh).
• joker: The username of the account you are modifying.

Note:

Make sure that the specified shell (/bin/sh) exists on your system. After executing this command, the next time the user joker logs in, they will be using sh as their shell.

If you have any more questions or need further assistance, feel free to ask!