sudo - Execute a command with superuser privileges.

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2
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0answers
1k 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 privilege, 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 ...
4
votes
1answer
153 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 ...
0
votes
1answer
344 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
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3answers
143 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
584 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
302 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
976 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
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1answer
875 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
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2answers
515 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
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1answer
184 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?
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2answers
110 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 ...
0
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2answers
155 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 ...
3
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5answers
2k 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 ...
2
votes
3answers
2k 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 ...
10
votes
4answers
8k 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 ...
0
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2answers
798 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
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1answer
122 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 ...
5
votes
2answers
164 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 ...
2
votes
2answers
2k 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 ...
1
vote
5answers
2k 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 ...
2
votes
1answer
2k 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
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0answers
150 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
1answer
195 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
2answers
13k 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# ...
0
votes
1answer
1k 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
202 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
623 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. ...
2
votes
2answers
4k 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, ...
2
votes
2answers
2k 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
2k 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
177 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 ...
1
vote
2answers
120 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 ...
8
votes
1answer
9k 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: ...
2
votes
1answer
323 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
77 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 ...
2
votes
4answers
2k 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
202 views

Cannot enter in centOS with any user

I am using cent OS Operating system without GNOME. In the starting, it asks localhost login: Password: It has one user named service under group name service whose password is also service. I ...
1
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0answers
134 views

External HDD read/write permission changing from a cron job

So, I run an overnight python script that runs a backup of our web data in the /var/www directory, then moves the backups to an external HDD in /media. The script in scheduled in the sudo crontab ...
4
votes
1answer
14k views

Suddenly, I Can't login with correct password (greeter & tty)

This might be a duplicate of other password related questions but it's somehow eccentric. I have 3 accounts in my Ubuntu 12.10 system (one standard and two administrators). One of the administrator ...
1
vote
0answers
369 views

git deploy using sudo nopasswd

I'm trying to write simple post-recieve script, which would switch to webserver user and pull git repository. To do so, I added git user to sudoers (I've added this to very last line): git ALL = ...
0
votes
1answer
671 views

Apt-get, no sudoers file

I am trying to install a module using apt-get. I do the following: sudo apt-get install But I get the following error: sudo: can't stat /etc/sudoers: No such file or directory sudo: no valid sudoers ...
1
vote
2answers
89 views

how to require sudo to view files?

I have a ssh server. I allow people to connect to it if they want. I do my programming homework on it. I am in trouble with my teacher because people were cheating off it. I need to know how to ...
0
votes
1answer
264 views

Execute John the Ripper on multiple processors using mpirun

I am a linux noob trying to optimize John the Ripper for a security class. I am trying to use both processors to run John by using the mpirun program as suggested in this tutorial. I installed mpirun, ...
2
votes
1answer
2k views

Can't use su or sudo on Arch Linux

Sudo returns this error: sudo: effective uid is not 0, is sudo installed setuid root? And su - returns this: su: Authentication failure The user I'm using is a member of the following groups: ...
1
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0answers
267 views

Bodhi Issue with Nautilus as SU

I am unsure how to run Nautilus with superuser privilieges on Bodhi, or if this is just a bad idea altogether. I am looking for a file manager that can browse my local network, and can be run as ...
2
votes
1answer
647 views

sudo hangs indefinitely without prompting for password

When I logged back into my Ubuntu desktop after an update, my display driver was seemingly unavailable and I was met with vt-7's output. I changed to a different terminal and logged in. However, when ...
4
votes
2answers
217 views

How to automaticaly enter sudo's grace period upon login

Knowing that giving a user a sudo's grace period right from the point when he/she login might be a security issue, I still think it will be a beneficial trade-off between security and usability in my ...
0
votes
0answers
47 views

Root user can't do everything? [duplicate]

Possible Duplicate: Redirecting stdout to a file you don’t have write permission on I'm quite new to Linux and I have a permissions questions. I'm using Linux Mint. If I go to /opt and do ...
1
vote
2answers
563 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 ...
2
votes
3answers
2k views

Run local scripts on multiple servers using sudo user through a script

I have about 100 remote servers. I want to manage all my servers using one terminal server to update , run commands with sudo privileges. I need to have one main script that takes another test script ...