![]() ![]() ![]() Accident mistakes can even delete root directories and unsafe to run programs with a root shell. Login in as root and running commands is dangerous because all commands are with the highest privileges. In this tutorial, we learned how to allow root access to a user in a Linux system. bob, %operator ALL= /sbin/, /usr/sbin, /usr/oracle/ Conclusion This entry allows bob and all the other members of the group operator to gain access to all the program files in the /sbin and /usr/sbin directories, as well as the privilege of running the command /usr/oracle/. Granting access to specific files to one particular user If your user is called user and your host is called host you could add these lines to /etc/sudoers: user host (root) NOPASSWD: /sbin/shutdown user host (root) NOPASSWD: /sbin/reboot This will allow the user user to run the desired commands on host without entering a password. sudoRunAsGroup This attribute allows users to run commands as a member of a Unix group. You can use the NOPASSWD directive in your /etc/sudoers file. Thereby skipping the command logging features of sudo. This works exactly like the RunAs list discussed in Chapter 4. To give full access (grant root privileges) to specific usersĪdd the entry given below in the file: bob, tom ALL=(ALL) ALLįollowing this method is not a good idea because this allows both bob and tom to use the su command to grant themselves permanent root privileges. Using visudo protects from conflicts and guarantees that the right syntax is used. Switch user with 'sudo su - username' using SSH keys Ask Question Asked 10 years, 2 months ago Modified 2 years, 4 months ago Viewed 71k times 14 I've been trying to use ssh keys in order to be able to switch from one user to another user on the same Linux machine/server by using sudo su - username. The sudo configuration file is /etc/sudoers and you can edit this file using visudo command: # visudo. Open /etc/sudoers.d/custom and write the following: user-a ALL (user-b:user-b) NOPASSWD:ALL Which means: whenever user-a executes sudo -u user-b (or any other variant), let him go without asking for password. ![]() Note: This is not the recommended method for granting root access Method 4: Setting as Sudo User 1 Answer Sorted by: 11 su is not meant to do that - sudo is. Now, temproot user should have root privilege: root:x:0:0:root:/root:/bin/bash It is also at odds with the way sudo works on other platforms I use. Another option using useradd command useradd -c “Imitation Root” -d /home/root_user -m -k /etc/skel -s /bin/bash -u 0 -o -g root root_user Method 3: Editing /etc/passwd fileĮdit /etc/passwd for the particular user. If you’re not logged in as an administrator, you can do so by entering the following command, where adminUsername is the name of an administrator user: su adminUsername This seems clumsy and inconvenient: su and then sudo. ![]()
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