Is su more secure than sudo?
Sudo Gives You More Control More Linux distributions like Debian and Ubuntu are installing sudo by default because it’s safer than using su. In addition to full root access as with su, you can specify which users can run which commands on which systems in the /etc/sudoers file.
What does sudo apt install?
The sudo apt-get update command is used to download package information from all configured sources. So when you run update command, it downloads the package information from the Internet. It is useful to get info on an updated version of packages or their dependencies.
Why is Sudo so important in Linux distributions?
What sudo does is incredibly important and crucial to many Linux distributions. Effectively, sudo allows a user to run a program as another user (most often the root user). There are many that think sudo is the best way to achieve “best practice security” on Linux. There are some, however, that feel quite the opposite.
What does s mean in the sudo command line?
That “s” means that this is a “setuid” program. You and everyone else have execute permission on this, so you can run it. When you do that, because it is setuid and owned by root, your effective user id becomes root- if you could get to a shell from sudo, you effectively WOULD be root- you could remove any file on the system, etc.
How to run Sudo as a user other than root?
The -S ( stdin) option causes sudo to read the password from the standard input instead of the terminal device. The -s ( shell) option runs the shell specified by the SHELL environment variable if it is set or the shell as specified in passwd (5). The -u ( user) option causes sudo to run the specified command as a user other than root.
Is there a way to prevent Sudo from running?
There is no easy way to prevent a user from gaining a root shell if that user is allowed to run arbitrary commands via sudo. Also, many programs (such as editors) allow the user to run commands via shell escapes, thus avoiding sudo’s checks. However, on most systems it is possible to prevent shell escapes with sudo’s noexec functionality.