The "root" account is the most privileged account on a Unix system.

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2
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15 views

Content of root's home directory in OSX

What is stored in root's home directory on OSX? What happens if you delete it on accident? Heres whats in my current root home folder. OSX:~ root# ls -lash total 8 0 drwxr-x--- 5 root wheel ...
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1answer
733 views

Start application as root at boot time on Ubuntu 14.04

I'm working in Ubuntu 14.04 I have an C++ application which I have compiled. I get the executable which name is "program". Well the thing is that this program use opencv and sockets then if I try to ...
1
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1answer
8 views

sane does not work as saned but as root it does

I have a plug computer that I want to use as scanner server using sane. It already worked with a different plug, so I know for sure that the scanner and sane are workable together. If I issue ...
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2answers
49 views

/etc/passwd shortest password

I need to put one character inside the password file so that nobody can notice. I thought that if I was able to put the password as plain text and put something like a space nobody would ever find ...
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3answers
4k views

Vim Error E138: Can't write viminfo file $HOME/.viminfo!

I'm afraid I've run into something rather strange. When I open a file normally, vim README.txt, everything is fine. But upon sudo vim README.txt, the file renders blank, and gives me a E138: Can't ...
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2answers
41 views

Copy a large file to external disk

I am trying to copy a large (4.4 GB) file to an external usb drive. Unfortunately, about halfway through my computer freezes. I know my root partition is becoming too small (yes, I already emptied ...
1
vote
1answer
34 views

Difference between owner/root and RUID/EUID

I am relatively new to the concepts mentioned in the question and reading about them from different sources only makes them more confusing. So this is what I understood so far: When we are given ...
0
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1answer
54 views

What is the difference between these two ways of reseting the root password?

I know several ways to reset root user's password, but want to know which is the best and why it is. For example: A method: Grub > 'e' init=/bin/sh (Remove rhgb and quiet tags if necessary) > ctrl+x ...
3
votes
1answer
48 views

How to poweroff headless machine using a script

I have a Java application that starts automatically when the headless machine (Ubuntu 14.04 Server) boots and runs as a user. When the application is finished I need it to execute a script to ...
0
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2answers
42 views

How to delete the whole root with rm rf and shred together?

My task is simple: I need to able to delete the whole root which i can do with rm-rf ./* but the problem here is HFS recovery can get back the data since it is not actually deleted from disk if i ...
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4answers
45 views

Can administrating task of 'root' be divided to the several of “more powerful” users?

Unlike root (which is able to do everything) is it possible to have multiple administrators assigned to manage only part of a system? For example, one system could have 3 administrators: ...
2
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1answer
52 views

root password suddenly invalid

Thats a mystical problem: out-of-nothing (nearly :), I can't use my former root password anymore... System: Debian Testing What did I do: log into root doing updates (with aptitude update ...
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1answer
41 views

How to know su password

You already know my question. I don't have su authority. So I want to know su password. I really(x100) don't know how to find it. I tried change direction(/etc/pam.d/su) and tried to delete auth ...
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vote
1answer
20 views

SUDO_USER undefined in sudo manual - clarification would be lovely

The following statement appears early in the sudoers manual, it refers to the "SUDO_USER environment variable" but the manual does not define it: If sudo is run by root and the SUDO_USER ...
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1answer
2k views

exclude commands from user's sudo permissions

Consider the following line in a /etc/sudoers file: username ALL=(ALL) ALL, !/usr/bin/passwd as far as I know, this allows user username to use sudo, unless he not uses /usr/bin/passwd. But ...
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0answers
56 views

Linux Mint 17.1 Cinamon Desktop Icons Root Account

I am using Linux Mint 17.1 64 bit on vmware workstation (Windows 8.1 host). I mainly use Linux for testing programs I have written (some have to be compatible with Linux). And I want to get familiar ...
0
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0answers
18 views

mount nas to local folder as non root user

It seems that gvfs would do what I want, but I don't seem to be using it correctly. Let me give a concrete example, I am on a machine as user foo, and user foo has sudo rights. Then I can do the ...
3
votes
4answers
92 views

SUID accidently removed from /bin/su file

It is a production server - CENTOS 6.1 Some user having root access in the past had logged on to the server and removed the SUID bit from the /bin/su file and then exited root. Now we are not able to ...
0
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1answer
69 views

Shell script printing blank $USER variable when executed by Smartd

I have created a script that smartd daemon (smartmontools) executes as per command below. DEVICESCAN -a -m email -M test -M exec /usr/share/smartmontools/my-script -n stand... Smartd appears to be ...
0
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2answers
193 views

How to autologin as root to mint 17.1

I would like to know how to autologin as root on mint 17.1? I've been able to login as root from the login screen (by enabling root access in login window settings and changing the theme to clouds). ...
0
votes
1answer
53 views

How to run privileged bash script as non-root? [duplicate]

I created a simple bash script which contains the command ifconfig. In general I want to execute such a privileged script to run as non-root user. I have tried hown root:users ./path/to/script.sh ...
3
votes
1answer
41 views

How to run ntp commands as non-root?

NTP commands such as ntpd and ntpdate are privileged and belongs to the root group. What is the best way to run these commands as non-root ? Linux capabilities, ownership, any method ? I have openSUSE ...
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1answer
24 views

How to run smartctl as root without switching to root?

I have this C code that runs smartctl command and takes its output: #include <iostream> #include <cstdio> #include <cstdlib> using namespace std; int main() { cout << ...
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2answers
3k views

How to execute changes on remote server as root?

I'm wondering if there is a way to execute a script/commands from the the local machine without making any modifications as root on the remote machine? Some background I'm trying to setup some tasks ...
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1answer
42 views

How can I get the root terminal to add myself into sudoers file so that I can act as root? [closed]

Once again, I'm trapped in a Linux security circle. When I start terminal, this is what I get: So I looked up the internet how to solve it. All solutions unsurprisingly require root permissions. ...
5
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3answers
727 views

Log all root activity with original username who su'd/sudoed to root

What is the preferred method to keep track of who is acting as root in the logs when root login is disabled (SSH) but users can run sudo -i or su - to become root? I would like to follow every ...
5
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2answers
3k views

Another account with same uid as root gets prompted to set new password for root, not itself

After upgrading the os from 5300-06 to 5300-11, this weird behaviour happened. My system had another unix account, let's call it "abc", purposely configured its uid to 0 for working as a root with ...
0
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0answers
11 views

Will I be able to install a service as a sudoer?

I will need to install a custom application as a service on a RHEL 6.2 box this weekend. Will I be able to do this with sudoer powers or will I need the root password for anything?
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5answers
496 views

What are the root permissions for a file?

If I type: ls -l file.txt I see that the rights for that file are equivalent to "456": 4 = owner (r--) 5 = group (r-x) 6 = others (rw-) Which the rights for root in this case? Does it have 777? ...
20
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7answers
17k views

Can root kill init process?

Can root kill init process (the process with pid 1)? What would be its consequences?
0
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0answers
25 views

NCR unix system v/386 release 4 recover root password

we have NCR 3455 system from long time as attached all information for server (images) , so we need your help to assist us to get root password which lost it , really we appreciate your efforts if ...
7
votes
4answers
13k views

How to get back sudo on Ubuntu?

I have done this: sudo chown -R myname /usr/ and now I can't use the sudo command because of this error: sudo: must be setuid root And as I read this means that the owner of this file ...
0
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2answers
29 views

Root to the Minimal

I am building a script to automate and minimize access to root. I am going to try do it via SSH. I am currently having an issue using sed to replace UID and GID 0 shell to /sbin/nologin. Why am I ...
2
votes
3answers
16k views

Enable root login from GUI

I just installed Mint 16 and I see that root user is not available at login screen. I log in from normal user and went to "Login Window" option and there I set "Allow root login". Then I restarted the ...
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votes
1answer
53 views

How can I run a script as sudo and for it to not ask me for a password?

I want to run the following script: #!/bin/bash if grep -qs 'MinecraftServer' /media/kiancross/MinecraftServer/MinecraftServer; then echo "Disk already mounted, server boot will continue" else ...
0
votes
1answer
101 views

Strange bash sytax error depending on sudo usage

I made this bash function to detect if the user running is actually logged in as root user and not using sudo by checking the uid + home directory of the user executing the command: #!/bin/bash set ...
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0answers
62 views

removing `nullok` from system-auth prevents any root password

[ this is a follow-up on my post on ServerFault : http://serverfault.com/questions/661136/root-accepts-any-password-how-to-change-to-a-real-password ] On an old system the root account accepts any ...
0
votes
1answer
46 views

Cannot install Sybase ASE on IBM AIX as root

I have a weird problem where I cannot install a Sybase DB server as root on an AIX virtual machine. I'm logged in as root and launching the installer as such: bash-4.2# ./setup.bin -i console ...
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2answers
61 views

start process (as root) upon user login

I would like to start a process as root upon each user login. The motivation beside this is, that the process will work on encrypted home folder of particular user folder. How can I achieve this?
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3answers
46k views

Can I change root's email address or forward it to an external address?

I'm getting a lot of mail in my root user's mail account. This appears to be mostly reports and errors from things like cron scripts. I'm trying to work though and solve these things, possibly even ...
0
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0answers
27 views

System sends alert when root-login fails three times

I have a server-system. I typed the password for the user root 3 times the wrong way, and I got an mail like servername : Jan 15 23:06:50 : username : 3 incorrect password attempts ; TTY=pts/6 ; ...
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2answers
2k views

How to automatically login with root user in Fedora?

I want to enable auto-logon with root user for some specific purpose. It's so boring that every time I power on my PC to study, I have to input user and password.
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votes
3answers
1k views

how to run shell on a remote server with root priviledge

I want to execute a shell script on a remote server, and the script should be run by root with no password required (or use sudo in the script). Can anyone give me some suggestions?
1
vote
1answer
41 views

Still able to read file after changing permissions

I've made a file as root, and written a string in it. Now I've changed mode to "0" like this: root# ls -al transit/ total 4.0K ---------- 1 root root 6 Jan 5 18:15 27050 root# If I try to tail, ...
1
vote
3answers
209 views

How could I reach root after switching from bash to zsh?

It's very weird that after switching to zsh from bash, I can't access root. I normally use 'su' to login as root after I login as a normal user (username is normalusername) with less privileges. And ...
44
votes
4answers
33k views

Reserved space for root on a filesystem - why?

I understand that by default, newly created filesystems will be created with 5% of the space allocated for root. I also know you can change the defined space with: tune2fs -m 1 /dev/sdXY What I'm ...
10
votes
2answers
515 views

Can I make a file only accessible to a script, and not a user?

I have a user with limited access on the system (that is, he is not a sudoer); let's call him Bob. I have a script or a binary which I, the system administrator, trust, and would have no problems ...
2
votes
1answer
689 views

How to run google chrome as root in linux

when I want to run google chrome as root, an error message with this title appears: Google chrome can not be run as root and the body of message is: to run as root, you must specify an ...
4
votes
1answer
498 views

Why does root not have /usr/local in path?

I've noticed that the default path for root on my of my vm's and servers do not include /usr/local/bin sudo -s echo $PATH /sbin:/bin:/usr/sbin:/usr/bin Whereas normal users on the server do have ...
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votes
2answers
15k views

“install: missing destination file operand after `rootterminal'”

When I open root terminal then it simply starts a normal terminal. I cannot access root terminal. When I update my root terminal by the following command sudo apt-get update && install ...