La commande su bascule sur le super utilisateur - ou l'utilisateur root - lorsque vous l'exécutez sans option supplémentaire. When adding the ‘-‘ character to the end of this command, you are also put into the PATH of the superuser. Users and it's types on UNIX .super user command SU and SUDO command uses and differences The major differences between su and sudo are as follows: sudo allows any command to be run as a trailing parameter, not just the user's shell. sudo su and sudo su --Well in Ubuntu (im assuming you are using it) sudo su - gives you super user privlages for that account to make changes to and such. ending the inner one will let you return back to the outer one. Another way to investigate this is by running both commands with strace -f. strace -f -o sudoi sudo -i vs. strace -f -o sudosu sudo su - If you diff those two straces, you'll see more exeve's being run for sudo su … When used with the -i option, sudo run an interactive login shell with the root user’s environment: I recently installed Debian in VirtualBox. If the user is granted with sudo assess, the su command is invoked as root. There is no benefit to using sudo su, it's an anachronistic habit from when people were used to using su. Tip: Scans run using su+sudo allow the user to scan with a non-privileged account and then switch to a user with sudo privileges on the remote host. 私は違いがあることを知っているsuとsudo -s私のホームディレクトリがあるの … Hello! Su vs. Sudo. With sudo -i you get a clean root shell. This is a basic introductory article to “sudo” and “su”. For over 6 years of using Linux, I have not come across an instance where I need to use “su” or “sudo -i”. su [username]: some application only allow it’s own user to access it, use “su username” to login and in order to access/execute/…. Su vs Sudo. NOTE – This article is more applicable to Ubuntu based distributions, but also applicable to most of the popular Linux distributions. 次のコマンドの違いは何ですか： su sudo -s sudo -i sudo bash 私suはルートパスワードを知る必要があることを知っています、そしてsudo私はsudoersファイルにいなければなりませんが、一度実行すると違いは何ですか？. Running sudo su - and then typing the user password has the same effect the same as running su - and typing the root password.. Sudo su vs. sudo su - in Ubuntu 14.04. At least one thing is different between "sudo su" and "sudo su -" The latter changes to root's home directory. sudo can also be passed the -i parameter to open an interactive shell, effectively emulating the functionality of su . Sudo vs Su.. Al igual que en otros menesteres, en Linux, también disponemos de diferentes formas de realizar una misma tarea. But in that case, I do not see any advantage in using the fat sudo over the tiny su - (and no surprises in case the sudo configuration is a bit different from what you assumed it is). guns on Mar 24, 2012 They are not equivalent. The sudo command allows you to run programs as another user, by default the root user.. Create a user1 account using useradd.. Log in as user1 using ssh or su or sudo.For example, you can just do this with: $ ssh [email protected]; It should fail, because you need a password for user1; it was never established. 'sudo su -' has a child of 'su -', and 'su -' has a child of '-su'. Forget sudo su. I was never given a password, so I don't know it. Vous devrez entrer le mot de passe du compte root. Let's feed the curiosity, sudo is a software allowing multiple users and groups to have several level of allowed commands to run as root or an other specific user. Linux – su vs sudo. The main work […] In this article, we will discuss in detail the ‘su’ command as well as how it differs from the ‘sudo’ command. What Is Su? In this article we will discuss what is the main difference between su and sudo commands. “Su” stands for substitute user. Musisz podać hasło do konta root. sudo su passwd root passwd -u root and to disable or lock root again. En este articulo hablamos de sudo y su, dado que son comandos que intercambiamos inconscientemente, pero cuyo objetivo real es … And today I found out that there's also a sudo su - option. Without it, you cannot access things like the ‘service’ command for restarting services. "sudo su" and "sudo su -" But I'm using opensuse. Ubuntu and some other distros allow sudo by default. "appadmin". If you are a newbie, it is advisable to keep your hands off “su” and use “sudo” if required. Running su without specifying a username inside sudo changes the current user to root twice. application. In the first case, you'll be in root's home directory, because you're root. sudo su – : using current user password to login superuser and without superuser’s password required. sudo su "username" 対 su "username" どちらがより高い特権を持っていますか？でrootにログインすると sudo su "username" 、私は1つのコマンドだけのためのルートですか？それで、スクリプトの始めはうまくいくが残りはそうではないでしょうか？ Nie jest to jednak całe polecenie su - możesz go użyć do przełączenia się na dowolne konto użytkownika. ‘su’ commands forces you to share your root password to other users. Вопрос не в том чем отличается su от sudo, а в том, чем отличается sudo su и sudo -i. Ответ на вопрос уже найден. sudo lets you run commands in your own user account with root privileges.su lets you switch user so that you're actually logged in as root.. sudo -s runs a shell with root privileges.sudo -i also acquires the root user's environment.. To see the difference between su and sudo -s, do cd ~ and then pwd after each of them. `sudo su` changes the values of USER, HOME, and SHELL to that of the root user. It allows user who have permissions to execute a command as the superuser or another user, as specified in the sudoers file. While sudo runs a single command with root privileges, su launches another shell instance with the privileges of the intended user. Sudo means, Super-User DO. Вот ссылка. This video is part of the Udacity course "Configuring Linux Web Servers". su is only able to "Substitute User" to execute your program, it does not handle a policy allowing fine-grained permissions on execution but can just log you as another user. Towards the ends of that tutorial, there was a mention of another similar command ‘su’ in a small note. Note: BeyondTrust's PowerBroker (pbrun) and Centrify's DirectAuthorize (dzdo) are proprietary root task delegation methods for Unix and Linux systems. su: run as superuser and have to type superuser’s password to run command. In an earlier article, we have explained to you the difference between sudo and su commands in Linux. Set the password for user1 to user1pw and then try to log in again as user1.. Look at the new records which were created in the /etc/passwd and /etc/group. As mentioned above, root user can do 'su -' without entering password, so doing 'su -' inside of a root shell, you will have two different root shell processes. The sudo command runs any command as another user account and is commonly used to elevate permissions so that the command is run with elevated security privileges (which in Linux terms is known as the root user).Sudo … То что su и sudo две разные программы я это знал. I become these users via "sudo su - appadmin", since I don't have the passwords for this user either. That it changes the pwd and sets the root's environment too. Hi. During install there's a section where you can make a password for the root account but if you leave it blank, it instead gives your regular user sudo ability. For the most Linux distributions, su and sudo are widely used commands. Diferencias entre Su, Sudo su, Sudo -i y Sudo -s.. Cuando trabajamos en línea de comandos, es común que necesitemos permisos de administrador. Most of the commands I run are executed as a different non-root user - e.g. This post was partially inspired by half an hour of unsuccessful googling in trying to figure out how I should be getting into a shell as another user with no password required. Linux: su v/s sudo. SU stands for substitute user and SUDO means substitute DO; although most people incorrectly think that it stands for super user as it is the account that is often used. What is ‘su’ command? sudo su changes the current user to root but environment settings (PATH) would remain same. AFAIK the default sudo configuration as installed with openSUSE results in the same allowances as su -. Not sure if you'll get the same results with Ubuntu. $ sudo su-instead of using: $ sudo su. SU vs SUDO. su is unnecessary; sudo -s is equivalent to sudo su, but allows the admin to restrict who may sudo to whom, for which programs, and so on. ‘su’ Vs â’sudo’ While using ‘su’ you have to share root user’s password with other users whereas ‘sudo’ make it possible to execute system-level commands without even providing root password. Ce n'est pas tout ce que la commande su fait, cependant - vous pouvez l'utiliser pour passer à … The former stays in the current working directory from which "sudo su" was run. I've always been using either sudo or sudo su. See sudoers(5) and visudo(8). Su vs Sudo. In one of our earlier articles, we discussed the ‘sudo’ command in detail. Different variations I've tried either complain "sudo: a password is required" or time out after 12 seconds. Watch the full course at https://www.udacity.com/course/ud299 People started tacking sudo in front when Linux distros stopped setting a root password and made sudo the only way to access the root account. For basic users, using “sudo” for most root commands suffice. Komenda su przechodzi do superużytkownika - lub użytkownika root - po uruchomieniu bez dodatkowych opcji. In the Linux and UNIX environments, you need to use either SU or SUDO in order to gain momentary access to another account, usually the root, while logged on as another. Some SSH credential types support privilege escalation. su VS sudo su VS sudo -u -i. Todos conocemos como obtener esos privilegios, con su y sudo.. Estamos tan acostumbrados a los dos comandos mencionados, que nos olvidamos de que existen otras opciones para conseguir acceso de administrador o root. Privilege Escalation. These are two important commands used to implement security in Linux, in regards to user management policy and user permissions. Rather than change their habits, they just used sudo su. In regards to the latter, would it make any difference if I'm trying to do under root: `sudo -s` only changes USER (it seems), but HOME is retained as the SUDO_USER's home directory. sudo su -- gives you privialdges for the ENTIRE server... thats why some apps dont work for su - because the changes (like boot or some apps) will affect all users. passwd -l root You will see this difference in the prompt path not having changed to the tilde (aka user's home directory) vs full /home/user path of the user that just su'ed so probably less desirable then sudo su or sudo -s anyway. Otro artículo más sobre su vs. sudo.El programa su es muy empleado en sistemas operativos tipo Unix para acceder como root y obtener los permisos necesarios para ejecutar otras ordenes desde el terminal e incluso ciertos programas con interfaz gráfica de usuario tienen extensiones que piden gráficamente esta contraseña cuando es necesaria.