sudo - Execute a command with superuser privileges.

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2
votes
3answers
420 views

sudo command after long sleep call without re-prompting sudo password

I'm trying to write a simple bash function that sleeps X-number of mins and then runs a system sleep command (for me it's sudo pm-suspend since I'm on Ubuntu) right now the function looks like this: ...
1
vote
3answers
506 views

Installation script needs to be run as a certain (regular) user but needs to create a system directory

I'm new to Linux, let me explain the issue. I'm trying to install comsol with some sort of network license. If I use sudo ./setup the server directory does not recognize the username "root". The ...
4
votes
1answer
4k views

Can edit file as root, but not using sudo

I just faced a really strange situation. I was trying to edit file /usr/lib/thunderbird/thunderbird.sh, which has the following permissions: $ ll /usr/lib/thunderbird/thunderbird.sh -rwxr-xr-x 1 ...
6
votes
4answers
4k views

Why can't we execute a list of commands as different user without sudo?

This question has been asked in a different way in other forums. But there has not been a decent explanation why you can't do the below in bash. #!/bin/bash command1 SWITCH_USER_TO rag command2 ...
4
votes
2answers
52k views

How to properly configure sudoers file, on debian wheezy?

I have seen many blog posts that say, it is enough to do aptitude install sudo su root adduser USERNAME sudo But that only protects aptitude, in other words: aptitude install sendmail will ask ...
2
votes
2answers
64 views

What alternative backends does sudo support and how is it configured?

When preparing for the Red Hat Certified Engineer certification examination, I came across this quote in my study notes about the sudo command. By default, the policy is maintained as a flat text ...
1
vote
3answers
130 views

Is there any way to disable shutdowning remote machine?

I sometimes mistakenly shutdown the remote machine by using sudo init 0, so I wrote something like in one of my rc files: alias sudo='sudo ' if [ $SSH_CLIENT ]; then alias init 'echo Never use init ...
2
votes
1answer
2k views

Why does this Bash NRPE plugin not return a variable to Nagios?

This is a very specific question I have here, maybe one has a simple answer for it. This script I have here works locally just fine: #! /bin/bash volts=`sudo vcgencmd measure_volts core|sed ...
1
vote
1answer
104 views

HGRCPATH kept in /etc/sudoers, yet ignored by hg?

I'm trying to follow the directions here under "sudo and multiple users". I believe I managed to modify /etc/sudoers correctly enough (by adding Defaults :me env_keep += "HGRCPATH" at the beginning ...
1
vote
1answer
192 views

Losing (realtime) permission when sudoing from root to myself

After an upgrade to debian wheezy (I did not upgrade the kernel - it is still 3.8.2) I can no longer start jackd in the way I used to do it. I get you are not allowed to use realtime scheduling. My ...
1
vote
1answer
1k views

Webmin administrative panel options are missing

When I log into Webmin, with the Ubuntu administrative user frank, I cannot see most of the administrative options: frank is shown as the Administration username in Webmin. I accidentally ...
1
vote
3answers
119 views

Confused on user and su in linux

How could I run a script as a specific user (non-root)? As this? sudo su - john /usr/share/script.pl for user john?
0
votes
1answer
286 views

rsnapshot LVM without root

I'd like to cron a local backup to a locally mounted USB drive. I'm using rsnapshot and want it to back up an LVM snapshot onto the USB drive. But, unless I run the cron as root it complains that I ...
2
votes
1answer
1k views

How do I grant someone else access to my linux server

If you administer a Linux server, what steps do you take to properly grant someone else access? Assuming they will log in over ssh, don't already have an account, and will need root access. ...
3
votes
2answers
2k views

insert text in a file using echo command [duplicate]

I am trying to insert some text in a file in the following way sudo echo "abc-abc/abc/abc" >> /etc/portage/make.conf but it give me the error Permission denied although I am using sudo ...
3
votes
2answers
4k views

Poweroff or Reboot as normal User

To run the command poweroff or reboot one needs to be super user. Is there anyway I can run this as a normal user? I just don't want to sudo and enter my password every time I reboot or power off.
5
votes
1answer
820 views

RPM fails to uninstall using sudo rpm -e

I have encountered a strange and annoying problem when trying to uninstall certain in-house generated rpm packages using sudo. When I do the following: sudo rpm -e mypackage rpm -qa | grep ...
31
votes
4answers
7k views

How can I `alias sudo !!`?

I'm trying to set an alias for sudo !! in Bash. I tried alias sbb='sudo !!', but it interprets that as a literal !! and prints sudo: !!: command not found If I use double quotes, it substitutes ...
0
votes
1answer
125 views

Are there any Linux distros that protect against “self-mutilation”? [closed]

Over the past week I have installed and reinstalled Linux several times (Mint 15 in all but one case; Ubuntu 13.04 is too slow on my laptop), and after a mishap with QT today I completely gave up in ...
0
votes
1answer
206 views

Execute remote programs and completely detaching it

I need to execute a remote application (named ConnectionManager), which uses the ncurses library, on the remote server launching it from a local pc. ConnectionManager is a program wich use ncurses ...
7
votes
3answers
1k views

Uncover sudoer user with root privileges which ran command X?

I'm the main sysadmin of a system. In the system there are 3 sudoers users with root's privileges. The system runs a script in background which check the hash of system's utilities to detect possible ...
2
votes
1answer
968 views

sudo hangs when run on remote host over ssh in a script without tty (-t)

I have an AIX 6.1 server where I need to run a remote sudo command in a bash script. Here is my bash script simplified: testSudo.sh #!/usr/bin/bash set -x sudo env I can run the sudo command ...
1
vote
2answers
253 views

Staggering the authentication delay on failed `su` or `sudo` [duplicate]

I'm about to start my new job as a sysadmin and I've been thinking about implementing a cooldown feature on su or sudo. The cooldown prevents the user from using these commands for a few seconds after ...
27
votes
3answers
18k views

How to make `sudo` preserve $PATH?

I need to run a program installed on /opt/godi/sbin (a custom directory). If I add that directory to my PATH, by adding the following line to my .bashrc file export ...
2
votes
2answers
6k views

Run a sudo (or startup) python script from cron on a Raspberry Pi?

I'm helping out with an art project (http://stargateeggbeater.com/ for those interested) built on Raspberry Pi. The RPi controls an addressable LED strip through the GPIO, using the spidev device per ...
2
votes
2answers
5k views

How can I mimic `sudo su - user` in a script?

I need to deploy my app to server called lovelyplace by a Fabric script. Unfortunately, the server's setup is horrible, but I can do nothing about it - I have to live with it. There is one non-root ...
0
votes
1answer
3k views

Why does NOEXEC not prevent the specified program from running?

I have tried the NOEXEC in my CentOS6.4 I have edited my /etc/sudo.conf file as below : Path noexec /usr/libexec/sudo_noexec.so and /etc/sudoers: ssh ALL=(root) ALL,NOEXEC:/usr/bin/passwd I am ...
0
votes
2answers
218 views

How can I run a linux build on an NTFS drive?

I'm running under Ubuntu but using a shared drive which is NTFS formatted. I've got blender sitting in a folder (it's the 2.66RC build with some trivial python customisations.) I'm calling blender ...
8
votes
2answers
8k views

sudo: ulimit: command not found [duplicate]

I was using ubuntu 12.04 ,on which I run ulimit -n ,it is showing 1024, I want to increase my open file limit from 1024 to 65535,so I tried the following command: sudo ulimit -n 65535 but i get the ...
0
votes
2answers
2k views

Ubuntu : unable to copy file to dir created under same credentials

I am Windows 7 remoting to Ubuntu 12.04.2 LTS I am new to Ubuntu ( and *nix in general ) and need to understand how permissions are assigned to newly created dirs. Via Putty ssh session : $bash ...
0
votes
2answers
64 views

Have rights during shell but not in a script (unless I sudo it)

I have a really basic confusion. How does sudo work? I noticed that when I ran a script it failed, since it tried to write a file in a directory that the following permissions: $ ls -l thedir ...
1
vote
1answer
1k views

use net instread of cdrom. linux, aptitude install

Got debian installed finally but during install I think I choose to use the local media over the internet for packages. needed to do that as was not sure if will try to connect right away (my modem ...
4
votes
3answers
6k views

How to send to background a running process started with sudo?

I have just installed SLC6 (derived from SL6 derived from RHEL6). I can send a running process to the background by hitting Ctrl-Z in the terminal where it was started. However, I can't do it when I ...
1
vote
1answer
71 views

How do I isolate my file system data from another system root?

I have a linux machine(kubuntu 13.04) A my friend asked me give him an account with being able to use sudo. So, I made an account for him and put the account in /etc/group for him to use sudo I don't ...
5
votes
2answers
5k views

Graphically ask for password in a bash script and retain default sudo timeout setting

The sudo -A (SUDO_ASKPASS) option apparently causes sudo to lose the timeout (e.g., timestamp_timeout) setting. I want to use the sudo -A option but I want to retain the default timeout (e.g., 15 ...
-1
votes
1answer
732 views

How to install kdesudo in OpenSUSE 12.3

I'm hoping this is a stupid question with a simple answer, but I've been hunting around for half an hour and cannot find a way to install kdesudo in OpenSUSE 12.3. I need to use kdesudo because kdesu ...
3
votes
1answer
396 views

Is it a bad idea to add myself to the sudo group?

Members of the sudo group in my Debian install can execute anything without entering a password. This is convenient, but seems like a bad idea. NOTE: My computer is an ordinary desktop, not a server ...
2
votes
1answer
778 views

sudoers: NOPASSWD in same line as PASSWD:ALL?

Is this combination legal: username ALL=(ALL) NOPASSWD: /usr/bin/foo, PASSWD:ALL or do they conflict or cancel each other out?
3
votes
3answers
7k views

How can I scp a file that my user can't read but I can sudo?

Can I use scp to copy a file from a remote server which my login user can't read, but where I have permission to sudo to root (without password even)? How?
5
votes
2answers
8k views

How to run sudo commands remotely via ssh -t?

I have a script that logs into a remote host via ssh -t and uses sudo service foo restart. The requirement is to avoid the prompt for a password on the remote host. The remote host authenticates via ...
9
votes
2answers
3k views

/etc/sudoers - Insults - How to add a list of insults?

I intend to play with the linux insults and add a few. However, i only could figure how to add a single insult but not a list or the location of the file that contains the insults.
7
votes
3answers
7k views

How can I cd into a directory as root?

Let's say there's a directory that I don't have the privileges to access. Obviously sudo cd foo won't work, because cd is a shell builtin in every shell ever. So far, I've just been using sudo bash ...
62
votes
3answers
5k views

How do the internals of sudo work?

How does sudo work internally? How is it possible that it can become root without having the root password, unlike su? What syscalls, etc. are involved in the process? Is it not a gaping security hole ...
3
votes
1answer
1k views

sudo command executes without prompting for password

For some reason, I suddenly do not need to enter the password when issuing sudo some_cmd. Entered command just runs without ever prompting password, even if I am not logged in as user root. Commands ...
-1
votes
1answer
344 views

How do i change the password for root using webmin, where i have no more access as root?

I changed the root password, using webmin it shows me successfully done. $ uname -a Linux .com 2.6.18-194.11.4.el5 #1 SMP Tue Sep 21 05:04:09 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux $ echo -e ...
25
votes
3answers
40k views

How to disable requiretty for a single command in sudoers?

I want to disable requiretty so that I can sudo within scripts, but I'd rather only disable it for a single command rather than everything. Is that possible within the sudoers config?
2
votes
1answer
3k views

How to execute php file as different user securely?

I want to confirm that my thoughts are correct as this is about security matter. We have web based application which is using db2 database. db2 runs under the db2inst1 user. Now we want users of the ...
1
vote
1answer
2k views

Running program as root without using sudo with normal user account

Is there a way to force to run program as root (with normal user) when there's no sudo on the machine (and can't be added)?
3
votes
2answers
2k views

Programatically use visudo to edit sudoers?

I have a sudoers file stored in our svn repo. I want to svn export it to /etc/sudoers but can't do it because sudo detects that it was not edited by visudo and throws syntax errors. What exactly does ...
3
votes
5answers
2k views

Protect folder from sudoers

Is there an ability to not allow sudoers view your folder (only you and root can access folder)?