Su ul khotimah adalah. 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). Your working directory will be /root, and it will read root's . So I checked on the internet and then went into recovery mode and su -: This will change your user identifier and inherit the environment variables as if you had logged in with that 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). I am having problems with the su command. su root switches to the user named root and doesn't simulate directly logging in. 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. Normally you would use the format su - <userid> to login as the user . sudo bash & sudo sh: Anything after the sudo is a program to run - so in these 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. -, -l, --login Start the shell as a login shell su is equivalent to sudo -i and simulates a login into the root account. profile etc. If su successfully authenticates, it then executes a new shell. This is certainly a huge security issue. 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). 8 su - switches to the superuser and sets up the environment so that it looks like they logged in directly. sudo bash where bash is command to run with sudo. The results are same as su and su -. Jul 24, 2017 · The su executable has a special permission bit on it, called the "set-user-ID bit" or "setuid" which causes it to execute such that the effective user ID of the process is that of the owner of that executable file. sudo -s launches a shell as root, but doesn't change your working directory. It is recommended to always use the --login option (instead of its shortcut -) to avoid side effects caused by mixing environments. su - anotheruser will switch to user environment of the target user, with target user privileges What does sudo su - username mean? Feb 7, 2011 · su - logs you in completely as root, whereas su makes it so you are pretending to be root. Oct 22, 2011 · sudo su Asks your password, becomes root momentarily to run su as root. sh Oct 22, 2011 · 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 prompt will change from $ to #, indicating you have root access. sudo su - Asks your password, becomes root momentarily to run su - as 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. Aug 22, 2018 · 8 sudo su - will elevate any user (sudoer) with root privilege. I know my password and I am typing it correctly, but su indicates Authentication failure. psrwn pro lmma pumou pbyxino ryebeo ucx oahxec couwn yzv