If you're an Ubuntu user, you're probably familiar with the 'sudo' command that allows you to run administrative tasks in the terminal. Often, you'll be prompted to enter your password to confirm that you're authorized to make changes to the system. However, by default, Ubuntu will display your password in plain text as you type it, which isn't very secure if someone is looking over your shoulder.
Thankfully, there's a simple solution to this problem. By editing the sudo configuration file, you can enable password masking, which will display asterisks or dots instead of the actual characters in your password. This can help prevent others from spying on your password, providing an extra layer of security for sensitive tasks.
To enable password masking for sudo, you'll need to open the sudo configuration file using a text editor. You can do this by running the following command in the terminal:
This will open the file in the default editor (usually nano). Scroll down to the line that reads 'Defaults env_reset' and add the following line directly below it:
Save and close the file, and you're done! The next time you run a sudo command that requires your password, you should see asterisks or dots instead of the actual characters as you type.
It's worth noting that password masking doesn't provide complete security - if someone is able to install a keylogger on your system, for example, they can still capture your password as you type it. However, it does help prevent casual snooping and is a useful feature to enable if you're concerned about security.
Overall, enabling password masking for sudo is a quick and easy way to improve the security of your Ubuntu system. By taking a few minutes to tweak your configuration file, you can help protect your sensitive information and prevent unauthorized access to your system.
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