sudo - Execute a command with superuser privileges.
1
vote
2answers
135 views
Is it possible for sudo to read password from gnome-keyring or similar
I'm currently using sudo a lot in a bunch of scripts, which is turning into a bit of a hassle, as some scripts does not allow interactive input (e.g., Makefiles).
Instead of disabling sudo passwords ...
0
votes
2answers
36 views
TAB autocomplete on sudo sh
When I say sudo sh, TAB stops working as autocomplete signal on my Debian.
How can I enable TAB key autocomplete after I say sudo sh ?
5
votes
1answer
748 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 ...
-1
votes
1answer
34 views
disabling root permissions [closed]
From Linux From Scratch build a minimal system for running my application. but struck on disabling root permission.
Need my minimal lfs as ubuntu.
when ubuntu boots login-screen displays when we ...
11
votes
2answers
1k 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?
...
1
vote
0answers
62 views
how to run ssh -t user@remote 'sudo nohup bash -c “comand”' in background
I want to run a script on a remote host with sudo priviledge,
someone suggests that I should use nohup and ssh -t, like the following command
the script ls;sleep 10;echo finish is crafted here to ...
49
votes
5answers
9k views
Where did the “wheel” group get its name?
The wheel group on *nix computers typically refers to the group with some sort of root-like access. I've heard that on some *nixes it's the group of users with the right to run su, but on Linux that ...
4
votes
1answer
43 views
when timing a command execution time with sudo, `time` should be before `sudo` or after `sudo`?
when timing a command execution time with sudo, time should be before sudo or after sudo?
time sudo command
or
sudo time command
which one is correct?
the output seems very different to me
...
1
vote
5answers
272 views
How to securely automate running commands as root with “sudo su -”?
hint (on client side, how to encrypt files/pwd's):
# encrypt pwd with ssh key:
openssl rsa -in ~/.ssh/id_rsa -outform pem > ~/.ssh/TEMP-id_rsa.pem 2>/dev/null
openssl rsa -in ~/.ssh/id_rsa ...
1
vote
1answer
228 views
automate login as sudo and su
I know the security risks, but I am performing this experiment/excercise on an old, seldom used *nix machine I have laying around the house. So doing this excerise will not bring any security risk to ...
0
votes
1answer
33 views
Difference between sudo su - user and sudo -iu user [duplicate]
I was wondering if there were any difference (in environment ?) between doing
sudo su - user
and
sudo -iu user
From what I know:
By using
sudo su - user
I open a new shell as user, and the ...
0
votes
3answers
40 views
How to limit administrative privileges to various config files?
I want one administrator to be able to edit the /etc/fstab file but one administrator to not be able to edit the fstab file.
Both administrators need access to all other administrative tasks.
Is ...
1
vote
2answers
503 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!
2
votes
2answers
483 views
How to add self to sudoers list?
I've added myself into the sudoers users list by using the command
root@debian:/home/oshirowanen#adduser oshirowanen sudo
If I try to run that command again,
root@debian:/home/oshirowanen# ...
1
vote
2answers
54 views
How do I set vim as the default editor when I sudo?
I'm working on a CentOS 5.9 machine, and I simply want to type
sudo vi somefile
and have my trusty vim with syntax highlighting, etc. This seems simple enough, but after many attempts, it's ...
1
vote
1answer
61 views
chmod and chown not working in sudo called script
Based on this Serverfault question, my git user has permission in sudoers to run a wrapper script to move files into my webroot with git.
Everything is working fine except for the chmod and chown ...
2
votes
1answer
109 views
Getting no tty present and no askpass program specified when using git over ssh
I'm trying to push a git commit from my laptop to my server but keep getting the following error message:
remote: sudo: no tty present and no askpass program specified
To ...
-1
votes
1answer
58 views
Where does sudo get the currently logged in username from?
When I tried to "sudo su" instead of "sudo su -" after having been logged in as root and su-ing to another user, it tries to sudo me as the new user, but via root...
When I type env, it shows still ...
0
votes
2answers
86 views
What does a sudo command do?
Being a unix noob, what does this command do?
$sudo /usr/bin/su -something
Is -something a password or username for running commands under this username?
0
votes
1answer
43 views
Where to configure which password sudo needs
on some OS sudo requires the users password, on others it's root's password.
Where is the config file to decide on this?
1
vote
2answers
34 views
The HOST variable in /etc/sudoers
suppose mymachine:/etc/sudoers includes the line
joe someremotehost = (ALL) NOPASSWD: ALL
but someremotehost:/etc/sudoers does not say anything special about joe, then what effect does the above ...
1
vote
2answers
49 views
Files created by 'make' aren't getting executable permissions by default
I'm trying to build a project, and when I use the command make, I get the following errors:
/bin/sh: line 4: .deps/ipset_bitmap_ipmac.Tpo: Permission denied
make[2]: *** [ipset_bitmap_ipmac.lo] Error ...
2
votes
5answers
114 views
Environment variable does not seem to work in sudo
I use apt behind a firewall, so I specify a proxy in the http_proxy environment variable.
What I have done is added the following line to both .profile and .bashrc (for good measure) of the root ...
1
vote
3answers
205 views
Using sudo in openSUSE without actually changing to root user (i.e., like in Ubuntu)
I recently started trying openSUSE 12.3 after having used Ubuntu for a few years. I'm still getting used to openSUSE's treatment of su (and sudo) vs. Ubuntu's use of sudo. I've been reading the ...
9
votes
4answers
730 views
Why doesn't “sudo su” in a shell script run the rest of the script as root?
A sample script can be as below:
#!/bin/bash
sudo su
ls /root
When using ./test.sh as the normal user, instead run ls as super user and exit, it switches to root; and when I logout, it executes ls ...
1
vote
1answer
304 views
add members of wheel group, sudo access
On Fedora15, following this wiki, I added a user to wheel group, which is already in the sudoer config file.
but still I get not-a-sudoer error prompt. Should I specifically name every member of a ...
1
vote
2answers
87 views
run a command as different user with available sudo permissions
I want to run the below command
echo 1000 > /sys/class/backlight/intel_backlight/brightness
i cannot do it it like below beecause bash is the process that actually directs output to the ...
3
votes
0answers
59 views
Auto completion for inaccessible directories
I'm trying to get a auto completion for folders that I don't have permission to view / enter, my first thought was to use compgen and sudo to do the completion manually, but looks like compgen is a ...
0
votes
2answers
46 views
Where are sudo incidents logged?
When someone is not in the sudoers group and try to use sudo, get an error message like this one:
yzT is not in the sudoers file. This incident will be reported.
I'm trying to figure out in which ...
0
votes
1answer
53 views
Don't execute a command with sudo, unless it's configured as password-free
I'm not sure if sudo supports so, I want to execute a command, only if this command is configured as NOPASSWD, that is, if the command can be run without password, run it; Otherwise quit directly.
So ...
1
vote
2answers
111 views
Linux (RedHat) `sudo su -l <<user_acct>>` does not source profile
As stated, having trouble with loading the default profile of <<user_acct>> when doing sudo su -l <<user_acct>>.
Inside .profile,
if [ -r "${HOME}/.profile.custom" ]; then
...
3
votes
3answers
390 views
How can I use `sudo` with a command, but still “be myself”?
My SysAdmin is requiring me to use sudo to run a certain script. This script (depending on which subcommand you pass in as an argument) connects to another machine using ssh keys, but this is ...
2
votes
1answer
105 views
No valid sudoers sources
I've gone through the Google searches, but the results always have an extra clue that I'm not seeing. The error:
[testuser@testhost] $ sudo -ll
sudo: no valid sudoers sources found, quitting
sudo: ...
2
votes
0answers
53 views
/proc/net/wireless does not show values unless run as root
cat /proc/net/wireless does not show statistics for wireless devices unless it is run as root, even though the permissions on the file are 444. The same seems to apply when accessing statistics via ...
3
votes
4answers
5k 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 ...
0
votes
1answer
146 views
Masquerading as another user from sudoers file?
My /etc/sudoers file has following entries:-
## Allow root to run any commands anywhere
root ALL=(ALL) ALL
agupta ALL= /sbin/,/usr/sbin/,/bin/,/bin/cat /etc/sudoers
ADMINS ALL= !/usr/bin/su, ...
3
votes
1answer
75 views
How does having /dev/fd make running shell scripts under sudo safe?
At the end of the man page for sudo, there's the following remark:
Running shell scripts via sudo can expose the same kernel bugs that
make setuid shell scripts unsafe on some operating systems ...
3
votes
1answer
255 views
Keep kerberos ticket across sudo invocation
On a regular linux machine, when I use sudo -s as a normal user, I become root but HOME still points to ~user, so every admin has his own environment etc. (this is without env_reset or always_set_home ...
3
votes
1answer
66 views
Redirecting output in the shell, permissions
I have a question about permissions.
Distro: Debian GNU/Linux 6.0.4 (squeeze)
So I have a folder with a php script in it. Both folder and file are owned by User1
If I do this:
php script.php
I ...
0
votes
3answers
98 views
What does sudo su work but su does not? [duplicate]
I have tried this on Fedora and on Ubuntu.
kshitiz@kshitiz:~$su
su: Authentication failure
kshitiz@kshitiz:~$sudo su
root@kshitiz:/home/kshitiz#
I am entering the same password in both the cases.
...
0
votes
2answers
283 views
sudo: password prompted even when NOPASSWD is set [duplicate]
~/bin$ cat setbrightness
id
echo $1 > /sys/class/backlight/intel_backlight/brightness
~/bin$ whoami
rag
~/bin$ sudo -l
Matching Defaults entries for rag on this host:
env_reset, ...
1
vote
2answers
103 views
What is the difference between gksu and sudo?
I presume this applies to any Gnome desktop. What is the difference between these two commands? According to the Ubuntu documentation and questions that reference it, the former also sets the $HOME ...
0
votes
2answers
127 views
Changing root password does not change sudo password
I'm trying to change the password that get's asked when doing sudo.
I'm in Ubuntu.
Doing 'sudo passwd' or 'sudo passwd root' does give me the two new password questions, and it successfully changes ...
2
votes
2answers
117 views
Does the sudo user need a home directory?
In my setup, my aim is to have
A standard user with minimal permissions to use on a daily basis
A superuser account, defined in /etc/sudoers.
Does this second user need a home directory? Both of ...
2
votes
1answer
415 views
Is it okay to disable requiretty?
I'm trying to set up a deploy script using Capistrano At a step cap deploy:setup script is connecting to my server and trying to run commands that create directories. Then I see an error: msudo: ...
3
votes
4answers
1k views
Allow non-admin users to install packages via apt or rpm?
Is it possible to allow non-root users to install packages system-wide using apt or rpm?
The place where I work currently has an out of date setup on the linux boxes, and admins are sick of having to ...
7
votes
2answers
5k views
Does mount always require root privileges?
I was under the impression that any sort of call to mount requires root privileges.
But recently I was told "You should instead create appropriate entries in /etc/fstab so that the filesystems can be ...
2
votes
4answers
179 views
Should I use `sudo` or `su` in a startup script?
I have a personal program, that has a server/client design.
The server daemon part of it, should be run as its own limited user, and the program was not designed to drop its root privileges (if ...
1
vote
1answer
107 views
Setting the root password vs. sudo -i
Should one always set a root password, or is sudo -i acceptable? Two problems is in reading other posts (maybe junk I realize):
sudo -i eliminates the need for a password. Isn't that a problem for ...
2
votes
1answer
49 views
Using sudo to give access to another account on same machine
There are two unix accounts A and B.I want to execute a unix command from account B such that the command behaves as if it was executed from account A .How can I do this ?
The problem here is that ...
