How to change user's shell?

To change a user's shell in Linux, you can use the usermod command with the -s option. Here’s how to do it:

Open a terminal.
Run the following command, replacing /path/to/new/shell with the desired shell (e.g., /bin/bash) and username with the actual username:
```
sudo usermod -s /path/to/new/shell username
```
To verify the change, you can check the user's entry in the /etc/passwd file with the following command:
```
sudo grep -w 'username' /etc/passwd
```

You should see the new shell listed at the end of the user's entry.