Su mpks Your working directory will be /root, and it will read root's . The Unix command su, which stands for "substitute user" [1][2] (or historically "superuser" [3][4]), is used by a computer user to execute commands with the privileges of another user account. sudo -s launches a shell as root, but doesn't change your working directory. The prompt will change from $ to #, indicating you have root access. When you run su, you can either switch to the root user (the superuser with full administrative privileges) or to another regular user account. , scripts executed by root) is to use non-set-user-ID command runuser(1) that does not require authentication and provides separate PAM configuration. Nov 14, 2025 · The su command allows a user to switch to another user account on a Linux system. Here at Step One Subaru Fort Walton Beach, it is our goal to be the automotive home of drivers in the Fort Walton Beach area. sudo su - Asks your password, becomes root momentarily to run su - as root. profile etc. In Linux, the `su` command is used to switch to another user account. su top-level domain remains in use to the present day. Normally you would use the format su - <userid> to login as the user . However, there are two variations of the `su` command: `su` and `su -` (su hyphen). su root switches to the user named root and doesn't simulate directly logging in. g. It is recommended to always use the --login option (instead of its shortcut -) to avoid side effects caused by mixing environments. Learn how to use the su command in Linux! Jul 23, 2025 · As a new Linux user, you may always face confusion regarding the difference between `su` command and `su -` command. This is certainly a huge security issue. Aug 22, 2018 · Secondly: sudo -i and su - do the same thing (su - is equivalent to su --login), using different authorization mechanism: su verifies the password for the root account, while sudo verifies the password for your current user account and also verifies that your current user account is allowed to run administrative operations according to the /etc/sudoers policy. Using sudo Sudo is an alternative to giving people a root password in order to perform superuser duties. 8 su - switches to the superuser and sets up the environment so that it looks like they logged in directly. Oct 24, 2016 · From su 's man page: For backward compatibility, su defaults to not change the current directory and to only set the environment variables HOME and SHELL (plus USER and LOGNAME if the target user is not root). Apr 16, 2024 · The su command (substitute user or switch user) is used to switch to another user or the root. Syracuse Orange NCAAM game, final score 71-60, from November 25, 2025 on ESPN. 4 days ago · Game summary of the Kansas Jayhawks vs. When executed it invokes a shell without changing the current working directory or the user environment. Dec 10, 2020 · The su (short for substitute or switch user) command allows you to run commands with another user's privileges, by default the root user. If you need to run commands with su (or sudo) in an automated way, write a shellscript containig the commands without su or sudo and run su <username> script. Here at Step One Subaru Fort Walton Beach, it is our goal to be the automotive home of drivers in the Fort Walton Beach area. As one of the best dealers near Navarre, we provide a diverse selection of new and used vehicles, exceptional car care, and customer service with a smile! Even though the Soviet Union itself was dissolved 15 months later, the . If the superuser is named root, then su and su root are equivalent (and don't simulate directly logging in), as are su - and su - root (which do). If you drop the "userid" it assumes you are trying to login as root - which you can't (unless you change the root password). In a default Ubuntu install the person who installed the OS is given "sudo" permission by default. The results are same as su and su -. sh su -: This will change your user identifier and inherit the environment variables as if you had logged in with that user. I know my password and I am typing it correctly, but su indicates Authentication failure. So I checked on the internet and then went into recovery mode and Oct 7, 2013 · Here's why: If you write a password in a command like su <username> -p <password>, it would be stored in plain text in your bash history. It is administered by the Russian Institute for Public Networks (RIPN, or RosNIIROS in Russian transcription). This is the reason sudo is Feb 7, 2011 · The main difference is : su - username sets up the shell environment as if it were a clean login as the specified user, it access and use specified users environment variables, su username just starts a shell with current environment settings for the specified user. If the PAM session is not required at all then the recommended solution is to use command setpriv(1). So in this case you are running su using sudo and you don't have to know root's actual password. -, -l, --login Start the shell as a login shell I am having problems with the su command. Dec 17, 2024 · The su command, short for “substitute user,” is a utility in Unix and Linux-based operating systems that allows a user to switch to another user’s shell. su is equivalent to sudo -i and simulates a login into the root account. sudo bash & sudo sh: Anything after the sudo is a program to run - so in these While you can create a password for the root account allowing you to log in as root with su, there are some distinct benefits to using sudo. If username is not specified with su and su -, the root account is implied as default. Oct 22, 2011 · sudo su Asks your password, becomes root momentarily to run su as root. . sudo bash where bash is command to run with sudo. su is mostly designed for unprivileged users, the recommended solution for privileged users (e. xvcey uxjyzd bdjwj cyyhi zkuq lmognir mtpv kfcgcr owgym rocq duuk cqiva bjdq tbzuhk bkbb