What is the difference between su - and su root? [duplicate] su - switches to the superuser and sets up the environment so that it looks like they logged in directly su root switches to the user named root and doesn't simulate directly logging in 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)
What are the differences between su, sudo -s, sudo -i, sudo su? 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 In the first case, you'll be in root's home directory, because you're root
su vs sudo -s vs sudo -i vs sudo bash - Unix Linux Stack Exchange su - means environment variables will be reset to root and su means environment variables as old user for example: root's home directory if you use su - or old user home directory if you use su sudo ( s uper u ser do ) is a command-line utility that allows users to run programs with the security privileges of another user, by default is
Whats the difference between `su -` and `su --login`? 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) It is recommended to always use the --login option (instead of its shortcut -) to avoid side effects caused by mixing environments
What is the difference between su - , sudo bash and sudo sh? su - This command is used to login at root account By default, the Root account password is locked in Ubuntu This means that you cannot login as Root directly or use the su command to become the Root user However, since the Root account physically exists it is still possible to run programs with root-level privileges
Why am I getting Authentication failure when running the su command . . . su asks for the password of the account you're trying to login It's usage (simplified): su username When omitting username, the username default to root Since the root password is disabled by default on Ubuntu, no password will be valid The preferred way to run root commands is not through a su shell, but with sudo as in: sudo mount dev
What is the default root password? - Ask Ubuntu 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 Using sudo Sudo is an alternative to giving people a root password in order to perform superuser duties In a default Ubuntu install the person who installed the OS is given "sudo" permission by default
Is there a single line command to do `su`? - Ask Ubuntu If you write a password in a command like su <username> -p <password>, it would be stored in plain text in your bash history This is certainly a huge security issue 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 sh
sudo - How do I login as root? - Ask Ubuntu sudo su - to execute a login shell as root after auhenticating sudo, and that shell will not need sudo to run admin commands To return to the normal user shell, insert the command exit You can have several terminals, one of them as root, and the rest as normal user, but you have always to be careful when making changes to the system and read
sudo su - vs sudo -i vs sudo bin bash - when does it matter . . . su - The command su is used to switch to another user (s witch u ser), but you can also switch to the root user by invoking the command with no parameter su asks you for the password of the user to switch, after typing the password you switched to the user's environment sudo - sudo is meant to run a single command with root privileges