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

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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 ...
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Is it logical to give root execution to some commands executed by a normal user? [on hold]

Given a C/C++ program that uses some system calls or commands, say for example sockets. In this question the solution gives root access to a normal user to run a specific one executable, which means ...
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1answer
38 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 ...
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1answer
37 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). ...
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35 views

Fedora 21 entering Emergency Mode finding Partitions Root and Swap

I'm having problem when it comes to booting in Fedora 21. Steps I took: Turned on the laptop Chose Fedora 21 from the list that includes it, Fedora 21 Rescue and Windows 7 Fedora 21 Loader is ...
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15 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 ...
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1answer
17 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
49 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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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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1answer
38 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, ...
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3answers
92 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 ...
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Error opening terminal: Screen [migrated]

I just installed nano on my Nexus 9, which is rooted. However, when I try to run nano, it says "Error opening terminal: screen." bash-3.2# nano Error opening terminal: screen. Any help would be ...
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2answers
488 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
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1answer
117 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 ...
2
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1answer
46 views

Right way of running a root task/program at background

I'm writing a program that needs to run at the background as root. (for any user) To do this I used the /etc/rc.local file. And it seems to work. The problem that I am experiencing is, when a ...
3
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1answer
161 views

Why is $HOME inherited when I start a shell with sudo?

I'm setting up a Vagrant box and I noticed something I found odd. root@box:~# sudo --user=vagrant bash bash: /root/.bashrc: Permission denied vagrant@box:~$ export declare -x HOME="/root" Why is ...
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208 views

Is there a graphical sudo (kdesudo, gksudo, su-to-root, …) tool that works passwordless?

Apparently gksudo is not obeying /etc/sudoers, neither does kdesu. Therefore asking the other way around... Is there any su-to-root, gksudo, kdesudo, etc. alike tool, that supports starting gui ...
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1answer
26 views

load missing library from ~/ without root or symlinks on shared hosting?

So I have a library file that is used by a php module, both of which reside in my home dir on my shared hosted cpanel account. Problem is this library depends on libcrypto.so.6 and libssl.so.6 files ...
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2answers
106 views

How to retroactively make a script run as root?

I'm writing a shell script, that needs to be run with root privileges. I can check if a user has root privileges with sudo -nv || echo "no sudo", but that doesn't help me, if his credentials are ...
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1answer
22 views

Disable root password caching

How can I disable root password caching? I looked at This Question, but I didn't really understand how to do it, is not the same as my question but it is indirectly related. I tried adding this to ...
4
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2answers
89 views

How to execute a command that requires root permission without sudo?

I'm trying to execute traceroute -d being authenticated as a "standard" user with sudo privileges. However if I run sudo traceroute -d it will be execute by the root user so I'm wondering how can I ...
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1answer
44 views

How can I see the password of another user in Linux?

I made 4 users on my server, but unfortunately I changed the password of the "first" user while configuring the server, but I don't know how I changed it. How can I see the password of users in root?
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2answers
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change the name for root mails from cron

I have two servers that are synchronized with rsync, one is the failover server of the other, so they both have the same name. Now root mails that are sent to my other account are all named from root ...
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1answer
129 views

sudo not working on debian

Why sudo command is not working on my fresh debian installation. I had this error after entering my root password: Sorry try again .. or / and incorrect password attempt EDIT : In my ...
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1answer
42 views

sudoers file and passwd only for selected group

I have 3 users in "production" group: John, Steve and Bob. In "sales" group are: Sam and Jack. Now, I would like to give John permition to change passwords of all users but only in "production" ...
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1answer
20 views

I moved root partition by error

I'm on a VPS with CentOS 6.5 I was trying to install ASSP so by error i did this command mv -f /* /usr/share/assp and then I can't do anything when I try something like: [/]# dir -bash: /bin/ls: ...
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moving a file to a folder with root privileges in CentOS 7

I am reading a tutorial that wants me to place a script file called script.sh into a folder called /etc/profile.d/. However, when I try to save the script.sh file in that directory, the gedit tool ...
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1answer
53 views

root cannot access virtual filesystem? [duplicate]

When attempting to check my disk usage under / I found that root did not have access to certain virtual filesystems. I also could not check the permissions on the virtual filesystem. Why is this? ...
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3answers
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(In)significance of [… ] and tty root processes

A colleague of mine assigned me to perform a root-cause analysis of an enterprise security server sometime ago. We knew the problem resided in one of the processes run by root but did not know which ...
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2answers
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What are some of the things ROOT can do that could possibly destroy the computer [closed]

I eventually plan on diving into software manipulation, and i want to avoid any and all things that as ROOT could destroy my system. I know tinkering with the file-system are dangerous to mess around ...
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25 views

Which Privileges Should Assign For Create Raw Sockets

I want to run an ICMP command to ping an IP Adress at Java: InetAddress.getByAddress("XXX.XXX.XXX.XXX".getBytes()).isReachable(1000); However there is a security restriction that: Normal users are ...
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how to write dd command to replace backup image of root partition?

I have installed rhel6.5 in my pc. After that I have changed some configurations in file system. now I have taken backup image of /dev/sda1 which is a root partition of 15gb in size using the command ...
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1answer
83 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
21 views

How To Increase Linux / (root) size? [duplicate]

I am new to linux. i am using rhel 6. ext4 is my file system my / root file is full. is there any way to increase it? if its possible please teach me how to do it? please explain me in detail, because ...
0
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1answer
20 views

attaching to Unix shared segment

Can a UNIX program running as root attach to a shared memory segment created by another user with permissions allowing access only to creator?
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1answer
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Nginx Static Build - Run as root with a non-root user

I have compiled nGinx statically and it is working fine. How i can create a NORMAL user and run the nginx static bin as root when i start it from the normal user?! Thank you
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3answers
372 views

Root /home Directory vs ~ (tilde)

I have created a virtual image for Scientific Linux and came across this after I finished installing it: [root@ftpserver home]# pwd /home [root]@ftpserver home]# ls When I cd into ~ I get this: ...
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1answer
237 views

su cannot execute bin/bash/****

I installed Kali Linux on a VM machine and I cannot change my user to root from the terminal using su. The command sudo works fine but when I try to su, it says "cannot execute bin/bash/****(my user ...
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2answers
69 views

running ./install as root

I mounted an .iso file and want to run the install file on it which is going fine. Then, at some point, the installer tries to make a new folder to install the program in. This, however, seems not to ...
3
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1answer
51 views

Run command with sudo by default

Just one brick missing in my current wall. Feels to me like it should be easy to solve, nevertheless I got some explaining for you to do to make you understand what I want to achieve. I need a linux ...
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2answers
214 views

Resize root LVM and FS in Debian 7

I have a Debian server and I would like to increase the "root" partition from 5GB to 17GB and to diminish the "home" partition from 14GB to 2GB. I am a newbie in linux sysadmin, so a really need your ...
0
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1answer
58 views

Crontab permission problem

I have a fc19 host at work. This morning crontab did not work. $ ls -l /usr/bin/crontab ----------. 1 root root 53472 Jun 11 2013 /usr/bin/crontab The permissions -------- means no one has access ...
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1answer
344 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 ...
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2answers
107 views

Add test user to the sudoers file, to run ifconfig

I would like to see the ifconfig file with test user (under Linux Debian) that's why I have used the sudo task, but the terminal said that: test is not in the sudoers file. How can I take the test ...
0
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1answer
99 views

How to open root directory on second HDD?

My situation is very specific. I've applied chmod -R 777 / on my CentOS 7 server, so my system screwed up on next reboot. I took server HDD home and connected it via SATA cable to my home PC. Now I've ...
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3answers
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Understanding a couple of points regarding root privileges

I just wanted to confirm my understanding of a couple of things related to root privileges. Is it correct that: The user name "administrator" is not a reserved name with implied privileges, it is ...
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1answer
55 views

How to use programs by users who haven't installed them themselves?

I have created a new user on my Ubuntu Linux at which I am the root. My root account has access to Wine, I want to use Wine from my newly created account without having to install it again. I have ...
3
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3answers
79 views

Password protect a single folder ( not a web folder )

I run debian and I'm looking to limit a folder to only be accessible by one user. How do I set the permissions up so only that one specific user can enter it, and no other user. The folder I'm talking ...
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7answers
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Emptying a file for root user does not work [duplicate]

I use below command to empty a file > file.txt It works perfectly fine! But there are some files with root user permissions. So I tried sudo > different-file.txt and I got below verbose ...
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1answer
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When does Linux send a root mail and how to force it for testing purposes?

Let's say I want to test root mail functionality after I set up nullmailer, how do I force my Debian Linux system to send a root mail? And furthermore on which events does Linux send root mails at ...