sudo - Execute a command with superuser privileges.

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19
votes
3answers
979 views

Where can I find documentation about the “sudo !!” command

I just learned that Linux has a sudo !! command which literally applies sudo to the last entered command. I had never heard about it. Is that a common control? Where can I find documentation about ...
4
votes
4answers
2k views

Is chmod behavior wrong for symlinks?

Recently we had a problem on a Red Hat Linux box with many users: the /usr/bin/sudo binary has lost its sticky bit. Work was blocked until root user fix it (we need sudo for deploying and testing). ...
1
vote
2answers
1k views

I accidentally deleted the sudoers file on Mac OS X; is there any way to recover it?

I accidentalley deleted the sudoers file on Mac OS X; is there any way to recover it? And once you've recovered it, how do you set it to mode 0440? I presume not but I am desperate to get it back!
9
votes
5answers
14k views

Can a linux user change their password without knowing the current password?

I'm setting up a few ubuntu boxes, and using opscode's chef as a configuration tool. It would be fairly easy to install public keys for each user on each of these servers, and disable password ...
1
vote
0answers
678 views

Gnome update-notifier doesn't show updates when user not in sudo group (Debian Squeeze)

Gnome desktop notifications of new updates is not working on my system. I noticed that the notifications stopped working when I removed my desktop user from the sudo group (I prefer to have a separate ...
17
votes
2answers
4k views

How does sudo remember you already entered root's password?

When using sudo on Linux, it asks for root password, but only the first time you run it. If you run another sudo command, it remember you already entered the password previously and doesn't ask for ...
1
vote
1answer
1k 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 ...
1
vote
2answers
2k views

How to configure sudoers to allow running sudo command under other group and user name?

How to configure sudoers to prevent having the Sorry, user ****** is not allowed to execute error message. Background For the purpose of testing how a python script under a less privileged user and ...
17
votes
2answers
9k views

su vs sudo -s vs sudo bash

What is the difference between the following commands: su sudo -s sudo bash I know for su I need to know the root password, and for sudo I have to be in the sudoers file, but once executed what is ...
2
votes
0answers
435 views

How to enable `sudo` with custom functions?

Recently I learned you can enable sudo for custom aliases as follows: alias sudo='sudo ' # note: the space is required! The reason this works is the following: If the last character of the ...
1
vote
2answers
816 views

permission reporting on sudoers

I'm looking for a good, consistent and easy way to do a report of sudoers permissions for every user and group on the system. For users, I want the report to include permissions granted via group ...
0
votes
4answers
10k views

Is there a difference between sudo su - root and sudo -u root -H /bin/bash?

Like title says, is there a difference between these two commands : sudo su - root sudo -u root -H /bin/bash I'm using GNU/Linux, if that makes a difference.
5
votes
2answers
6k views

tail program output to file in Linux

I know we can use below format to redirect the screen output to a file: $ your_program > /tmp/output.txt However when I used below command, it says "-bash: /home/user/errors.txt: Permission ...
12
votes
2answers
2k views

zsh wants to correct vim to .vim

I'm using zsh on Gentoo x64, and when I type sudo vim /path/to/file from my home folder, zsh asks: zsh: correct 'vim' to '.vim' [nyae]? I want to run vim not my .vim folder. How do I fix this? ...
3
votes
3answers
2k views

Problem with vim when logged in as root

When I login as root or edit a file by sudo mode all of the options in my /etc/vimrc are not working (e.g. highlight line-number etc.)
1
vote
1answer
7k views

switching from user to root and revers (FreeBSD)

I want to make some modification with root and then with my user, in fact I want to install sudo and he give me the error in the first step: cd /usr/ports/security/sudo make install clean ...
1
vote
2answers
598 views

start apache script

I've got Apache installed on my local Linux (sabayon) OS, just for programming testing. What I want is a script so that the server starts right away when I want it. This is the code: #!/bin/bash # ...
2
votes
3answers
7k views

Run sudo as another non-root user and save in this user's home directory

I added a new group: ircuser and a new user: ircuser In visudo I placed this line: myuser localhost=(ircuser) NOPASSWD: /usr/bin/irssi Created ircuser directory, where config files, caches, etc ...
1
vote
1answer
268 views

Why `which tmux` and `sudo which tmux` return 2 different values?

ssh bobby@tony:~$ which tmux /usr/bin/tmux ssh bobby@tony:~$ sudo which tmux ...
6
votes
1answer
2k views

how to set the sftp -s subsystem option in a configuration file

The sftp command supports a subsystem option (-s) which allows the remote user to select the remote sftp-server executable, and optionally upgrade to sudo in the process like so; sftp -s ...
3
votes
3answers
331 views

how can I give a normal user write access to a network interface?

I have a program that reads and writes packets to/from network interfaces, and normally I would add myself in the sudoers file and run the program like this: sudo ./bridge But now I need multiple ...
2
votes
1answer
886 views

Ubuntu 11.10 Server: create user, home directory, sudo privileges: command line only

I have a rackspace server and I'm having problems with configuration. I need to lock it down and throw away the key, because right now I can only login with root to do anything substantial. I also am ...
5
votes
2answers
4k views

ulimit PICKLE: “Operation not permitted” and “Command not found”

I'm trying to increase the maximum number of open files for the current user > ulimit -n 1024 I attempt to increase and fail as follows > ulimit -n 4096 bash: ulimit: open files: cannot ...
1
vote
1answer
2k views

Mint 12: synaptic package manager error

Yesterday I had the same issue, I solved it by running sudo synaptic But today I don't know what's happening, if I run gksu synaptic or gksudo synaptic they don't do anything. If I go to root and ...
1
vote
3answers
3k views

permission denied when redirecting sudo sed output [duplicate]

Possible Duplicate: Redirecting stdout to a file you don't have write permission on I'm trying to install drupal according to the instructions given in this tutorial: ...
6
votes
4answers
2k views

How does Bash path completion work with sudo?

Tab path completion does not work (at least on Ubuntu and AFAIK Arch) with sudo mount <whatever> The iso file I am trying to mount is not in /etc/fstab. If I just type mount <whatever> ...
2
votes
1answer
610 views

Software installation with GUI package installer using sudo permission

I have the sudo permission, and I can install any software using the CLI. But I want to know that whether sudo works with package installers in GUI mode. For example I have a .chm file and I want to ...
3
votes
1answer
356 views

Update manager updated without prompting for a password

As far as I'm aware, I'm supposed to be prompted for a password before anything installs, but just now, I told update manager to install updates, and it proceeded to installing them without prompting ...
12
votes
3answers
5k views

Prompt for sudo password and programmatically elevate privilege in bash script?

I'm currently working on a bash script that installs and sets up various programs on a stock Linux system (currently, Ubuntu). Because it installs programs and copies a number of files to various ...
21
votes
1answer
3k views

How to get root inside of vi? [duplicate]

Possible Duplicate: Becoming root from inside Vim It could happen to anyone. The admin types: vi /etc/resolv.conf as a regulare user. He edits the /etc/resolv.conf file, but when he ...
2
votes
1answer
164 views

How can I adjust this short shell script to fit my needs?

I am attempting to force powertop to run when I log in by using the Startup Applications wizard in Ubuntu. Under the 'Command' entry, I've placed gnome-terminal -x ...
7
votes
3answers
3k views

Copying protected files between servers in one line?

I'd like to copy squid.conf from one server to another. The servers don't talk to each other. I'd like to go through my workstation. Both servers have the file, so it will be overwritten on the ...
2
votes
3answers
3k views

debian not accepting administrative password

I have XFCE Debian on an old PowerPC PowerBook G4. When I go to open Synaptic Package Manager, a window pops up asking for my administrative password. I enter the password I normally use for sudo in ...
43
votes
2answers
4k views

Why do we need to use visudo instead of directly modifying the sudoers file?

I understand that if you want to modify who can use sudo and what they can do with it that you should use visudo. I know I'm not supposed to directly modify the /etc/sudoers file myself. What is it ...
2
votes
1answer
406 views

How to create a sudo user that cannot delete me?

I'm sudoer on a remote linux machine and would like to create another user with the maximum privileges, except the privilege of managing my account. I'm assuming a sudoer can delete or change the ...
2
votes
4answers
3k views

Set Default/Global Gnome Preferences (Gnome 3)

I have recently switched to Gnome 3 from Gnome 2 (and switched to Linux recently before that), and Gnome 3 doesn't give me as many options to change settings via the GUI, and especially not to change ...
3
votes
1answer
290 views

How to use SCSUDO to run scripts with positional parameters?

I am trying to use scsudo to run a number of defined commands to stop and start processes on a UNIX host. The issue I am experiencing is that scsudo does not seem to like the use of positional ...
2
votes
1answer
432 views

Why can I copy files to, but not create files in, this directory? [duplicate]

Possible Duplicate: Redirecting stdout to a file you don't have write permission on I'm trying to create an md5sum for an ISO image created with the Ubuntu Customization Kit tools. The ...
1
vote
0answers
521 views

Can't make a copy of /var/lib/mysql/ibdata1

I have a RedHat Linux server and I'm trying to make a copy of /var/lib/mysql/ibdata1, but I'm receiving an error saying permission denied and the file cannot be opened. I'm logged in as root user and ...
1
vote
1answer
338 views

How to invoke root privileges from my custom app?

In a GUI-environment, I want to be able to ask the user for the root/sudo password and then execute an app that requires root privileges from within my app. As an example, say I want to run an editor ...
2
votes
1answer
444 views

Specific command sequence with sudo and file permissions

I need to allow a certain user access to these commands: sudo sync echo 3 | sudo tee /proc/sys/vm/drop_caches (This particular developer is doing some DB performance testing and flushing the fs ...
12
votes
6answers
13k views

Is there a way to stop having to write 'sudo' for every little thing in Linux?

I'm a newbie when it comes to Linux. I do most of my development in a Windows environment. That said, I'm going to be doing a fair amount of PHP work shortly, and I'm interested in learning RoR, so ...
-1
votes
3answers
489 views

no root shell freely available sudoers policies

I want to prevent users who need escalated privileges from obtaining any kind of a root shell. However since there are many ways to attain this, and many non root commands ( like those found in ...
0
votes
0answers
299 views

Why do you need sudo for “sudo su root”? [duplicate]

Possible Duplicate: When do su and sudo use different passwords? Why do you need to use sudo su root ? Why won't it work to just use su root?
5
votes
1answer
3k views

sudo -u username -s “cmd arg” returns command not found

I used to execute the command: sudo -u elasticsearch -s "ulimit -Hn" and it was returning the value of ulimit -Hn as seen by user elasticsearch until I tried it on Ubuntu 11.10. There it returns: ...
7
votes
3answers
5k views

Why do some packages use 'make install' while other use 'sudo make install'

I recently installed LAME encoder on my server to convert wav to mp3 and that worked with './configure, make, make install; I then tried to install OGG encoder and that requires './configure, make, ...
4
votes
3answers
14k views

Bash Sudo Command Not Found

I have set up a VM using turnkey linux redmine and I'm trying to SSH into the server to install some more items. It doesn't appear to be recognizing the sudo command. Every time I try to sudo ...
7
votes
2answers
5k views

Why is sudo telling me my password is wrong?

I recently installed OpenBSD 4.9 in my computer, so I could learn a little bit about Unix-like operating systems. I added a new user to the system called bruno. Ok. When I use the 'sudo' command, it ...
2
votes
1answer
2k views

pass 1 environment variable using sudo

Is this a correct way for passing an environment variable in sudo ? sudo -u www-data -b env FOOBAR="foobar" /home/user/folder/daemon
0
votes
2answers
2k views

Run in root shell from within a user bash script

I have a script that , among other things, needs to do some stuff as root, like creating a mount folder. I tried: echo "Linux user password is needed in order to ..." sudo -s # also tried: # sudo su ...