- UBUNTU SUDO AS ANOTHER USER HOW TO
- UBUNTU SUDO AS ANOTHER USER PASSWORD
- UBUNTU SUDO AS ANOTHER USER SERIES
In these cases, you can use the sudo command to execute a command as a different user. This can be for a number of reasons, such as if you are logged in as a standard user and need to execute a command that requires root privileges.
UBUNTU SUDO AS ANOTHER USER HOW TO
To some UNIX traditionalists, this method of dealing with the root account is a bad idea, and some attribute its use to an attempt to make Windows users more comfortable when they move to Linux.Assuming you would like an article discussing how to execute a command as a different user in Linux: When working in a Linux environment, there are often times when you need to execute a command as a different user. However, the equivalent is easily accomplished through the command: sudo su.
UBUNTU SUDO AS ANOTHER USER PASSWORD
Instead, there appears to be only a normal user account, and the same password is used to log into the system as a normal user, and to use sudo. Some Linux distributions, notably Ubuntu, do not work with root user accounts in the traditional UNIX fashion. $ sudo bash -c "echo hello > /tmp/rootfile" If a file named /tmp/rootfile is owned by root, the command: Note that some Linux distributions may require chmod 400 /etc/sudoers.d/student. Thus, you can simply make a short file in /etc/sudoers.d containing the above line, and then give it proper permissions as in: Instead, there is a sub-directory /etc/sudoers.d in which you can create individual files for individual users. On all recent Linux distributions, you should not modify the file /etc/sudoers. Which would let the user have all normal root privileges. The simplest line you could add to this file would be (for user student): Rather than discussing the details of how to do such fine tuning, we recommend you read this file as it is self-documenting, or do man sudoers. Otherwise, you can wind up in a difficult-to-fix situation, especially on Linux distributions such as Ubuntu, which hide the root account and rely heavily on the use of sudo. You should use either the visudo or sudoedit programs (as root) instead, as in:īecause they check the resulting edited file to make sure it has no errors in it before exiting.
It is not recommended to edit this file in a normal manner. Furthermore, it is possible to limit exactly which subset of commands a particular user or group has access to, and to permit usage with a password prompt. However, this will not work unless the superuser has already updated /etc/sudoers to grant you permission to use the sudo command. While this resembles doing su -c, it is quite different in that the user’s own password is required su requires the other user’s password (often that of root). Where in the second form, the implicit user is root. While this may be an acceptable day-to-day method on a system on which you are the only normal user and you are trying to respect good system hygiene by avoiding privilege escalation except when absolutely necessary, there is a better method involving the sudo command. Once you have made the root password known to a normal user, you have abandoned all notions of security. You can do that with the su command, but there is one obvious drawback the user needs to have the root password in order to do this. Suppose a normal user needs temporary root privilege to execute a command, say to put a file in a directory that requires root privilege. In the first case, this will be in the current working directory, in the second, in the root’s home directory. You execute only one command, in this case ls. There is a subtle difference you are signed into a login shell, which means your working directory will shift to the home directory of the account you are logging into, paths will change, etc. If you use a naked dash as an option, as in: The superuser session ends when you type exit in the shell. If you do not give a user name (as in the third example), root will be assumed.
You will be prompted for the password of the user whose name was specified. In order to temporarily sign on as another user, you can use the su command, as in the following examples: As a general rule, you should assume so-called root privileges only when absolutely necessary and for as short a time as necessary.
UBUNTU SUDO AS ANOTHER USER SERIES
It is possible to enter the system as the root user either for a series of operations or only for one.
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