su is a utility to run a shell or other command as another user (root by default).

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72 views

How do I fix my /etc/sudoers file to recognise me?

Currently, I am receiving the following terminal error: sudo: parse error in /etc/sudoers near line 10 sudo: no valid sudoers sources found, quitting sudo: unable to initialize policy plugin I have ...
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2answers
101 views

Ubuntu CentOS RHEL cross bash script su support

I know that title was a little ambiguous. Allow me to explain our issue. We designed an installer script on Ubuntu since Debian based systems are our primary core, however, some of our cloud based ...
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1answer
92 views

limits.conf modification doesn't work

On a SLES 9 machine I added the line: vi /etc/security/limits.conf USERNAME hard cpu 70 but when I check it with "ulimit -a": SERVER:~ # su USERNAME USERNAME@SERVER:/root> ...
3
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1answer
130 views

su - -c 'll' other_user results in error, how can I run this other user's alias?

In current bash session, I just want to change to another user for some bash command. The command is aliased to some script defined in another user's .bashrc or .profile. Am I able to make it ...
2
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1answer
67 views

When can a user do `sudo su` but not `sudo su -`?

The following happened to me: $ sudo su - superman Sorry, user clarkkent is not allowed to execute '/bin/su - superman' as root in krypton101. However the following worked fine: $ sudo su ...
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1answer
14 views

How (or is it possible) the Linux desktop X-Server from Terminal under an SU otherusername

I have a simple scenario to demonstrate the use-case for this question Login to Linux as currentuser start bash terminal xauth list $DISPLAY mint/unix:0 MIT-MAGIC-COOKIE-1 ...
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1answer
124 views

Valid root/user passwords not working on EC2

There is an authentication failure when I'm trying to enter password for any of my accounts after an update using yum. My authentication got broken, while everything else works. The updates were ...
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1answer
33 views

Make superuser act like some other user in certain directory tree

I have the following problem: My home directory lies on the network and is mounted locally on home/<my username>. I can access it with my normal user account <my username>, but as root, I ...
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1answer
115 views

Bash script with (X)dialog asking for root password (kdesu substitute)

I'm using (X)dialog for a script that a normal runs, but it needs root privileges for some commands. The script runs from a .desktop file, thus the user sees no terminal. For example here #!/bin/bash ...
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1answer
47 views

How do I switch user without any references to the old one?

A while back, when playing with unprivileged LXC, I discovered that the command to create a container failed if I used su to switch to the user, but it worked if I used ssh user@localhost to login. ...
1
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1answer
568 views

How to invoke root privileges from a password prompt of “Software Update” window?

When I try to install software updates using the "Software Update" GUI, I am asked for the root password. Although, I can 'su' in a terminal, the password is not recognized as correct in the GUI ...
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1answer
53 views

Is there a way to see which user is logged into the system and has switched with “su”?

There are many person that may have access to the system and use a common user with more grants. How can I see which user is running a command? is there a way to use "ps" for that?
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1answer
465 views

How do you keep the password hidden when invoked during the su command?

This is the first time it has happened to me where I am using the su command and it actually displays the password on the terminal and doesn't stay hidden. Here is my code snippet: sshpass -p ...
2
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0answers
28 views

Slackware su man pages does not mention /etc/suauth, what reason?

I've been reading the man pages before I start restricting su access to certain users (I'd like to not rely on sudo if possible). There is no /etc/suauth file so I was going to create my own and ...
2
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0answers
132 views

Difference between 'xhost + ' and 'xhost +SI:localuser:AnotherUser'

If I do xhost + >access control disabled, clients can connect from any host su AnotherUser -c xterm an xterm popups, but if I do xhost +SI:localuser:AnotherUser >localuser:AnotherUser being ...
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0answers
31 views

Bind a directory as me

Analogous for a regular user running a thin FTP server (where others can access the file system with his/her permissions), can a regular user (through fuse maybe) "mount" a directory for others to use ...
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0answers
243 views

Decrypting with GPG after a “su - different user”

I have cron job running a script in the cron of "USER A" that encrypts many files in a loop using the gpg command below: gpg --batch --cipher-algo AES256 --passphrase "PASSWORDISHERE" -c FILENAME ...
2
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0answers
135 views

Understanding getlogin spoofing

My question is in three (or so) related parts: 1) My understanding is that getlogin() will effectively return the auid associated with the process and so isn't actually changable by the user. Is that ...
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0answers
24 views

What command should I use to explicitly set list of groups and execute a command?

To execute a command as other uid, one uses su. The list of supplementary groups is not specified on command line, but instead read from configuration files (/etc/passwd, /etc/group), etc. Which tool ...
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0answers
101 views

Slow script execution

I have a strange problem... My script: #!/bin/bash SECONDS=0 lock_file=/tmp/$0.lock [ -e $lock_file ] && exit touch $lock_file echo "<<<db2_hadr_check>>>" instances=( ...
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0answers
32 views

Linux/CentOS - can't su after changing ownership

I mistakenly changed ownership of all files on a CentOS system from root to my login account. I can login but if I su I get: su: cannot set groups: Operation not permitted I don't need the system ...
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0answers
92 views

Some commands does not work in su envirorment

I have logged in to CentOS 5 machine with normal user and then I used su command to login as root user. Now commands like ifconfig, useradd, userdel are not working on machine and it gives command not ...
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0answers
1k views

Automate `pbrun su` via plink

I am trying to automate an sFTP process for our project. When I login with PuTTY and manually type the command pbrun su - user1, root access is given to user1 and I am able to do the sFTP process. I ...
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0answers
78 views

can't access account with empty password

I used the passwd command to remove the password for my account. Now, when I try to use su to log in to my account, it won't let me enter an empty password. So now, I can't access my account. Any ...
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0answers
74 views

sudo and su hang indefinitely… stumped

I am trying to run su or sudo on my CentOS 6.6 machine. Every time I try to execute either command, I get prompted for a password. After entering the password, the command simply hangs. I can ctrl+c ...
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0answers
31 views

Why use use su -c to start background processes?

After reading Link im under the impression that using su -c with & would be redundant. My reasoning is that any process started with su -c will be started in a new shell but it will not be killed ...
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0answers
49 views

Use sudo as login

I've picked up the habit of using sudo and disallowing root logins. In cases, sudo is integrated with GUI configuration tools that require it. Are there any serious efforts to replace login and ...