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The command su, including the Unix permissions system and the setuid system call, was part of Version 1 Unix. Encrypted passwords appeared in Version 3. [5] The command is available as a separate package for Microsoft Windows as part of the UnxUtils collection of native Win32 ports of common GNU Unix-like utilities. [6] The su command was removed from GNU coreutils as of release 8.18 (2012-08 ...
Oct 22, 2011 · 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 -.
Sep 17, 2016 · When I type the su command in a terminal I get su: Authentication failure Why doesn't this work in Ubuntu? I have tried this command in another Linux distro (Parrot OS) and it does work.
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.
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). It is recommended to always use the --login option (instead of its shortcut -) to avoid side effects caused by mixing environments. ... -, -l, --login Start the shell as a login shell ...
If you still want to use su after reading the warnings in the question, there is no need to set a root password. Just do sudo su and you're on your way with your regular password.
Feb 7, 2011 · su - logs you in completely as root, whereas su makes it so you are pretending to be root. The most obvious example of this is that ~ is root's home directory if you use su -, but your own home directory if you use su.
The meaning of SU is variant spelling of xu.
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Oct 7, 2013 · Here's why: If you write a password in a command like su
I am having problems with the su command. 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
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Jan 20, 2013 · In my new Gentoo installation, su doesn't work as my non-root user: After entering the correct password I get the message 'su: Permission denied'. What could be causing this? I have already tried
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.su is an Internet country code top-level domain (ccTLD) that was designated for the Soviet Union on 19 September 1990. [2] Even though the Soviet Union itself was dissolved 15 months later, the .su top-level domain remains in use to the present day.
Add a comment 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).
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Aug 22, 2018 · 8 sudo su - will elevate any user (sudoer) with root privilege. su - anotheruser will switch to user environment of the target user, with target user privileges What does sudo su - username mean?
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Sep 17, 2015 · So running 'su -m ' as root will make bash to read ~/.bashrc which expands (due to preserved environment) to /root/.bashrc which you have no rights as user. Your /etc and /etc/bashrc permission are wrong also, it should be 755 for /etc & 644 for /etc/bashrc.
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