Open the terminal application. For remote Ubuntu/Debian server use the ssh command and log in as the root user using either su or sudo. Create a new user named marlena, run: adduser marlena. Make marlena user ‘sudo user’ (admin) run: usermod -aG sudo marlena.
How do I give administrator rights in Linux?
Granting Admin Rights via Command Line
Two different commands can grant admin rights in Ubuntu: usermod and gpasswd. Replace username with the username of your choice. The -aG flag stands for Append and Group. This command instructs usermod to append the username to a group, which in this case is the sudo group.
How do I give someone access to my Ubuntu?
Type “sudo chmod a+rwx /path/to/file” into the terminal, replacing “/path/to/file” with the file you want to give permissions to everyone for, and press “Enter.” You can also use the command “sudo chmod -R a+rwx /path/to/folder” to give permissions to the selected folder and its files.
How do I give someone access to my ssh?
Please note that all commands given below should be run as root or sudo user.
- Allow SSH access to a user or group. To allow SSH access for a particular user, for example sk, edit sshd_config file: $ sudo vi /etc/ssh/sshd_config. …
- Deny SSH access to a user or group. …
- Disable SSH Root login.
How do I give a user sudo permission in Linux?
To use this tool, you need to issue the command sudo -s and then enter your sudo password. Now enter the command visudo and the tool will open the /etc/sudoers file for editing). Save and close the file and have the user log out and log back in. They should now have a full range of sudo privileges.
How do I see users in Linux?
How to List Users in Linux
- Get a List of All Users using the /etc/passwd File.
- Get a List of all Users using the getent Command.
- Check whether a user exists in the Linux system.
- System and Normal Users.
How do I list users in Linux?
In order to list users on Linux, you have to execute the “cat” command on the “/etc/passwd” file. When executing this command, you will be presented with the list of users currently available on your system. Alternatively, you can use the “less” or the “more” command in order to navigate within the username list.
How do I login as root in Linux?
You need to use any one of the following command to log in as superuser / root user on Linux: su command – Run a command with substitute user and group ID in Linux. sudo command – Execute a command as another user on Linux.
How do I login as sudo?
Open a terminal Window/App. Press Ctrl + Alt + T to open the terminal on Ubuntu. When promoted provide your own password. After successful login, the $ prompt would change to # to indicate that you logged in as root user on Ubuntu.
How are we giving permission to particular users?
To change file and directory permissions, use the command chmod (change mode). The owner of a file can change the permissions for user ( u ), group ( g ), or others ( o ) by adding ( + ) or subtracting ( – ) the read, write, and execute permissions.
Which users can SSH?
Any user with a valid shell in /etc/passwd can potentially login. If you want to improve security, set up SSH with public-key authentication (there is lots of info on the web on doing this), install a public key in one user’s ~/. ssh/authorized_keys file, and disable password-based authentication.
How do I enable SSH through a specific IP?
Now, perform the following steps to configure the IP addresses with authorization to log in by using SSH:
- Open the file /etc/hosts.allow file by using a text editor: vi /etc/hosts.allow.
- Add an sshd line to allow the IP address of your choice to connect by using public SSH. …
- Save and close the file.