Tagged Questions

sudo - Execute a command with superuser privileges.

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4
votes
1answer
89 views

keep aliases when I use sudo bash

I have a Centos 5.5 server that has my own alias commands for my account. When I do "sudo bash" I can still use those aliases, I didn't have to add the aliases to the root bashrc. I have another ...
1
vote
1answer
26 views

Replacing graphical sudo prompts with sudo command

I'm trying to replace gksudo, pkexec and its ilk with sudo. However, I'm told that using sudo <graphical_program> is a bad idea. Would the following work as a decent replacement? sudo -H ...
3
votes
1answer
520 views

sudo environment: “g++: command not found”

I have a relatively fresh RHEL 6.5 install, on to which I have installed from source GCCC 4.9. After I installed GCC 4.9, I uninstalled the distro-provided older GCC version via: sudo yum remove gcc ...
9
votes
3answers
2k views

Execute a line of commands with one sudo

For example if I want to create a file and enter text in one line I can redirect the output into a file with the use of the > operator: echo "something" > /path/foobar but if I don't have ...
5
votes
1answer
486 views

I changed /etc/sudoers, and now I can't run as sudo

I messed around with the sudoers file without really knowing what I was doing using this link. Assume I did everything that was in the top answer along with editing it with vim and not visudo. How do ...
0
votes
1answer
740 views

Running both sudo and nohup on a command

There is a complex command that requires sudo: sudo command par1 666 /home/me/... I need to launch it so that it persists after I log off from terminal (SSH). I have discovered that nohup command ...
2
votes
0answers
23 views

Why does xdg-open text_file differ from sudo -u me xdg-open text_file?

If I run the following command, the text file opens in my preferred editor (kate). $ xdg-open text_file However, if I try the following, where sparhawk is my username, I get several warnings, and ...
2
votes
1answer
65 views

How do I limit local user file system access? What is the best method?

I have a Linux installation with a default user and an admin user (and root). On startup, the default user is automatically logged in and a particular application is launched. My intention is to ...
1
vote
2answers
44 views

Disallow Changing of Passwords [duplicate]

I have a spare computer running as a small server doing various things, and I'd like to create another account for my cousin, so she can learn how do manage a server/run minecraft etc. I'd like to ...
1
vote
1answer
51 views

sudoers conditional/combo command is possible?

I want to allow sudo this way: myuser ALL=NOPASSWD:/usr/bin/pkill -fx "/usr/sbin/nethogs -v 3 -s" || /usr/sbin/nethogs -v 3 -s so I get only a single running instance of nethogs. visudo accepts ...
1
vote
1answer
31 views

How do I switch user without any references to the old one?

A while back, when playing with unprivileged LXC, I discovered that the command to create a container failed if I used su to switch to the user, but it worked if I used ssh user@localhost to login. ...
4
votes
2answers
495 views

How to get the name of the user who executed a bash script as sudo?

I want to create a bash script that must be executed with sudo but should take into account the name of the non-sudo user who executed it. So if user bob runs sudo ./myscript.sh I would like ...
6
votes
1answer
72 views

How to make gksudo or gksu sessions last longer in Linux

Every time I want to open a GUI program that needs root permissions, I have to put my password. For example, I open synaptic and put my password then close it and a second later decide to reopen it it ...
0
votes
1answer
163 views

How to give All privilege rights to user ubuntu 12.04

I am working with my first VPS.I created a new user adduser username and then I added this line username ALL=(ALL:ALL) ALL under root in visudo I saved the changes and exit the ...
3
votes
1answer
7k views

“sudo: sorry, you must have a tty to run sudo” when using sudo in a remote script

I want to run a series of sudo-elevated commands on a remote machine from an embedded script. To simplify the question, I'm just trying to run sudo id and get it to tell me that it's root. I am ...
2
votes
3answers
162 views

Can sudo replace su?

There is much duplication of functionality on Linux-based systems, for example these do the same thing: sudo --login --user <user> sudo su - <user> The sudo-only approach looks more ...
3
votes
1answer
186 views

how to use rsync (using password-less ssh), with sudo just on the local side?

This command works fine for me with password-less ssh: rsync -aqve ssh ${user}@${remote_host}:/etc/bind /tmp/etc/bind Since I would like to rsync directly to my own local /etc/bind with root ...
2
votes
0answers
76 views

PHP exec and amixer

I'm trying to make php lower the dB level of amixer using exec, but it seems like php isn't able to perform the task which requires sudo-access. What should be the best way to solve this? I tried: ...
3
votes
1answer
2k views

Vim Error E138: Can't write viminfo file $HOME/.viminfo!

I'm afraid I've run into something rather strange. When I open a file normally, vim README.txt, everything is fine. But upon sudo vim README.txt, the file renders blank, and gives me a E138: Can't ...
1
vote
3answers
332 views

Send a command with password in upstart script

CentOS 6.5 The server is an AWS AMI, specifically this one I'm trying to use upstart to start a process on boot On this particular box, the root login is disabled, and every time I need to run ...
4
votes
1answer
128 views

How can I run growisofs via sudo?

Whenever I've attempted to run growisofs via sudo I've always gotten the following error message. $ sudo -i growisofs :-( growisofs is being executed under sudo, aborting! See NOTES paragraph in ...
1
vote
4answers
360 views

sudo not preserving PS1

The configuration below is in my /etc/sudoers: Defaults !visiblepw Defaults always_set_home Defaults env_reset Defaults env_keep = "COLORS EDITOR DISPLAY HOSTNAME HISTSIZE INPUTRC KDEDIR ...
1
vote
1answer
1k views

Switch users with sudo or su in a shell script

I inherited this. Long story short I have an XML file that is calling a shell to run some commands. Everything I have tried has failed at the second su in the script. Here are some of the failure ...
1
vote
1answer
137 views

Slow sudo because of socket connections

Some time ago sudo started to behave very slow on our server. Some times we have to wait even a few minutes until it executes. I've checked all hostname and dns causes that forums all full of, but ...
2
votes
1answer
140 views

Sudo email notification setup error

I'm Using Centos version: [sysadmin@backup-srv ~]$ cat /etc/redhat-release CentOS release 6.4 (Final) I'm using this sudo version: [sysadmin@backup-srv ~]$ sudo -V Sudo version 1.8.6p3 Sudoers ...
2
votes
2answers
129 views

Will I be prompted for the sudo password a second time?

This is what I plan to do: #!/bin/bash sudo -i <<'EOF' iptables-save | awk '/^[*]/ { print $1 } /^:[A-Z]+ [^-]/ { print $1 " ACCEPT" ; } /COMMIT/ { print $0; ...
2
votes
1answer
166 views

How to create an executable bash script for these commands?

I wish to create an executable bash script that will run the following commands as root, that is, using sudo su iptables-save | awk '/^[*]/ { print $1 } /^:[A-Z]+ [^-]/ { print ...
0
votes
3answers
417 views

SSH Agent-Forwarding works, but what about sudo -u username no shell/ permissions? composer

Working on a remote server (A) I want to use my local SSH-Keys to access a repository on another server (B) that is not controlled by me. Generally this works like a charm. I log in as myUsername ...
0
votes
0answers
100 views

Debian wheezy using gnome classic requires root for system modifying changes

I am using Gnome classic on Debian Wheezy, and I sometimes get a popup for package updates. The UI prompts for a root password, and will only accept root. Is there some way for me to add my account to ...
1
vote
2answers
78 views

Why does it take more time for a login to fail than to succeed? [duplicate]

When logging in to my PC, and the password is correct, the login takes place nearly instantaneously. When the password is wrong, it takes a few seconds of waiting until the hint "The password is not ...
1
vote
3answers
538 views

Wrong Permission to /etc folder [duplicate]

I have given the wrong permission to the /etc folder chmod -R 777 /etc When I want to login as root it gives me an error and the following output. How can I correct the permissions? ...
0
votes
1answer
43 views

Write a file in /var/lib/sysnews/ [duplicate]

In that folder are stored the news files: they can be created by the system administrator to write some informations for the users, as suggested in this link. I tried as a normal user to add a file ...
5
votes
1answer
81 views

Why does visudo discourage other editors?

man visudo explains that visudo will not (by default) use EDITOR or VISUAL environment variables. It states that "There is no easy way to prevent a user from gaining a root shell if the editor ...
4
votes
1answer
942 views

Sudo permissions by ldap groups via nslcd

I have a problem with my sudo permissions in an MS ActiveDirectory to Debian LDAP authentication/authorization setup. What I have so far I've configured nslcd with libpam-ldap via ldaps and ssh login ...
0
votes
1answer
580 views

Adding www-data to /etc/sudoers dos not work for PHP shell_exec() to run a command

I'm running the webserver lighttpd on Raspbian (Debian based) on a Raspberry Pi. The server runs as user www-data (checked with ps aux). I added the following line to /etc/sudoers: www-data ...
2
votes
1answer
98 views

Root Password Policy and Refresh

Unfortunately the infrastructure I work in has static root passwords that are very rarely refreshed. So people leaving the company will have our root passwords and it can potentially be leaked to ...
-1
votes
1answer
142 views

Why sudo ./bin/mysqld_safe & on Mac OS X 10.6.8 doesn't ask for password?

I get the following permissions from terminal: $ cd /usr/local/mysql $ ls -l drwxr-xr-x 41 root wheel 1394 29 Apr 00:55 bin drwxr-xr-x 4 root wheel 136 29 Apr 00:55 docs ...
3
votes
2answers
2k views

I'm not getting privileges, edited /etc/sudoers [duplicate]

I want to run any program without asking root password. Because I'm the only person who use the system. So I googled and edited /etc/sudoers. What I did: # chmod 640 /etc/sudoers # vim /etc/sudoers ...
4
votes
2answers
557 views

System Crontab or Root Crontab

System crontab: /etc/crontab Root crontab: sudo crontab -u root -e Which way is preferred? As they all run tasks within administration privilege.
0
votes
1answer
89 views

Can't simulate initial login using sudo

$ sudo -iu cyrus sudo: unable to change directory to /srv/cyrus: Permission denied sudo: unable to execute /bin/zsh: Permission denied I don't understand why I would get permission denied for ...
3
votes
2answers
97 views

User created without a password behaves as if he had one

Inside one of my scripts, I created an user based on a directory arrangement on another machine. The thing is that this user, created without a password, behaves just as he had one : he has sudo ...
1
vote
1answer
1k views

How to execute changes on remote server as root?

I'm wondering if there is a way to execute a script/commands from the the local machine without making any modifications as root on the remote machine? Some background I'm trying to setup some tasks ...
2
votes
2answers
263 views

How does sudo really work? [duplicate]

This question might be stupid, but I am unable to answer it myself. I always thought that "sudo" just starts another login-process, specifically using "root" as a username and asking for the Password ...
2
votes
0answers
134 views

Why sudo won't remember my password?

I use sudo in many systems, but I have one of them that makes me type my password each time I run sudo. All the others remember it for a while. This is debian 7.4 wheezy and sudo 1.8.5 I found this : ...
0
votes
1answer
174 views

Directory locked! [closed]

I have been trying to install virtualbox using this command: sudo apt-get install virtualbox.qt But I am getting this error: E: Unable to lock directory /var/cache/apt/archives/ I have been ...
1
vote
0answers
42 views

Passwordless sudo not working [duplicate]

I am trying to setup my server so that I can restart Apache as userx without having to enter a sudo password. However when I logon as userx and run sudo /usr/sbin/service apache2 restart it asks me ...
6
votes
1answer
107 views

Send only one warning when the private key is not available

For added security, I would like to require a private key to use sudo on my Ubuntu Server box. I've added private key authentication for sudo as described at ...
4
votes
1answer
91 views

How can I add sudo permission for copying? [duplicate]

my sudoers file: cat /etc/sudoers ... USERHERE ALL = NOPASSWD: /bin/cp /home/USERHERE/foo/in.csv /home/anotheruser/in.csv ... it looks OK too: USERHERE@notebook:~/foo$ sudo -l Matching Defaults ...
2
votes
3answers
559 views

Run nvm (bash function) via sudo

I want to write a init script that should basically run nvm use v0.11.12 && forever start /srv/index.js as the user webconfig. nvm is a shell function that is declared in ...
4
votes
1answer
775 views

System environment variables not appearing in sudo

I have the following line my /etc/environment file: BROKER_URL=tcp://xxx.30.8.163:61616 I run this and get: $ set|grep BROKER_URL BROKER_URL=tcp://xxx.30.8.163:61616 Then, I run: $ sudo bash # ...