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What are the differences between su, sudo -s, sudo -i, sudo su? sudo su Asks your password, becomes root momentarily to run su as root sudo su - Asks your password, becomes root momentarily to run su - as root So in this case you are running su using sudo and you don't have to know root's actual password The results are same as su and su -
What is the difference between su - and su root? [duplicate] 8 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)
Why do we use su - and not just su? - Unix Linux Stack Exchange 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 username is not specified with su and su -, the root account is implied as default
su - user Vs sudo su - user - Unix Linux Stack Exchange 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 This is the reason sudo is
su vs sudo -s vs sudo -i vs sudo bash - Unix Linux Stack Exchange su is equivalent to sudo -i and simulates a login into the root account Your working directory will be root, and it will read root's profile etc The prompt will change from $ to #, indicating you have root access sudo -s launches a shell as root, but doesn't change your working directory sudo bash where bash is command to run with sudo
What is the difference between su - , sudo bash and sudo sh? su -: This will change your user identifier and inherit the environment variables as if you had logged in with that user Normally you would use the format su - <userid> to login as the user If you drop the "userid" it assumes you are trying to login as root - which you can't (unless you change the root password) sudo bash sudo sh: Anything after the sudo is a program to run - so in these
sudo su - vs sudo -i vs sudo bin bash - when does it matter . . . sudo su - This time it is a login shell, so etc profile, profile and bashrc are executed and you will find yourself in root's home directory with root's environment sudo -i It is nearly the same as sudo su - The -i (simulate initial login) option runs the shell specified by the password database entry of the target user as a login shell
What is the difference between sudo and su -c The difference between sudo and su is how they perform authentication: su prompts for the target user's password sudo checks whether the source user is authorized to run the command (the authorization is specified in etc sudoers) Depending on the configuration, it might prompt for the source user's password, both to mitigate the risk of an unattended console and to alert the user that
Is there a single line command to do `su`? - Ask Ubuntu 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 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
Whats the difference between sudo su - and sudo su 28 When you provide a double-hyphen the experience you will have is identical to if you had just executed sudo su without any hyphen Passing a single hyphen is identical to passing -l or --login The man page for su describes the behavior as: Provide an environment similar to what the user would expect had the user logged in directly