5
votes
1answer
64 views

Writing raw images safely to USB sticks

Trying lots of different linux, on all kinds of hardware I find my self typing commands like this quite often: sudo dd if=xubuntu-13.10-desktop-amd64.iso of=/dev/sdc bs=10240 Needless to say, ...
1
vote
2answers
82 views

How to edit /etc/hosts without sudo?

I have a machine that I can only access using SSH. I was messing with the hostnames, and now it says: ssh: unable to resolve hostname I know how to fix it in /etc/hosts. Problem is, I need sudo ...
9
votes
4answers
1k views

Sudoers for one day per week?

I have been volunteered by my boss to be the sysadmin for our production redhat server. He asked me to tighten the security to avoid mishaps like rm -f * that occured not long ago. Right now, we ...
0
votes
2answers
20 views

How to create a directory which will have access to the user who is installing a package?

I am packaging one of my projects on Debian. The project expects a directory to be created at XDG_DATA_HOME or ~/.local/share/ where the data files will be kept. Now I am trying to create and feed the ...
0
votes
3answers
120 views

Run Linux “motion” app as user

I'm trying to run Motion app on a Linux box. For various security reasons, I'd rather run it as regular user than sudo. However, when I run "service motion start" without the sudo in front, it says: ...
0
votes
1answer
82 views

Can't access the directory /etc/ppp/peers?

I want to read some configuration file. The problem is that I can't move in the folder peers and typing the command ls -l, I see this permission's record: drwxr-s--- root dip ... I never seen that ...
6
votes
1answer
84 views

Cannot expand asterisk without proper permission

Can someone explain to me the following? $ ls -ld /temp/sit/build/ dr-xr-s--- 3 asdf qwer 4096 Jan 31 2012 /temp/sit/build/ $ ls -ld /temp/sit/build/* ls: /temp/sit/build/*: Permission denied So ...
0
votes
1answer
140 views

Can't sudo after lock password, can I recover from that?

After setup ubuntu with default settings, It allows user to login with password, so I use passwd -l [username] to forbid password login both in ssh and console. But when I use sudo to execute ...
2
votes
2answers
480 views

Unable to run 'sudo chmod +w /etc/hosts'

I am logged into my remote VM (running out of ESXi) as user xyz. I wanted to change my /etc/hosts to add some network names that were not visible by default. I first tried to run sudo vi /etc/hosts ...
3
votes
2answers
337 views

Who is file owner if the file is created using sudo command?

I logged in using my username ravbholua: ravbholua@ravbholua-Aspire-5315:~$ echo $LOGNAME ravbholua I create file named a1: ravbholua@ravbholua-Aspire-5315:~$ echo>a1 ...
2
votes
3answers
933 views

Allow a user to view the home directory of other users via sudo

I am new to system administration. We have a lab set up where we have a server and client machines. The client machines have LDAP users which has the work area for all the users in the centralized ...
1
vote
2answers
125 views

Can't run su after changing permissions to su file

I am running Linux Slackware 14.0. I wanted to allow to do su only to the members of wheel group, so I modified the permissions of /bin/su and /usr/bin/sudo files to this: bash-4.2# ls -la /bin/su ...
0
votes
1answer
379 views

Allow www-data to perform specific commands

I need a PHP script to perform git pull however I am not naive enough to give it permissions on git. I've wrapped git pull in a script which www-data has permissions for, but I'm not sure how to give ...
3
votes
1answer
302 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 ...
2
votes
1answer
170 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. ...
2
votes
1answer
275 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.
0
votes
2answers
344 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
59 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 ...
3
votes
5answers
351 views

Protect folder from sudoers

Is there an ability to not allow sudoers view your folder (only you and root can access folder)?
1
vote
1answer
240 views

Can't edit /proc/sys/net/core/wmem_max [duplicate]

Recently my wireless network has being stopping to transfer data from some irregular time intervals that vary from 30 seconds to 20 minutes, and every time I need to plug off and then on the wireless ...
3
votes
2answers
1k views

Allow a specific user or group root access without password to /bin/date

As the title would suggest, I'd like to give a user or group full root access to the /bin/date command, including any manner of arguments as defined in the man pages. I understand /etc/sudoers ...
0
votes
2answers
127 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
votes
1answer
157 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 ...
1
vote
2answers
113 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 ...
1
vote
0answers
121 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 ...
0
votes
1answer
212 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, ...
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
2k views

How to allow www-data to create a folder without giving read access to the parent folder

I'm not exactly sure the right question to ask, so I'll try to explain what I'm trying to do. I have an internal web application (in PHP) that I want to be able to create a folder. The trouble is ...
1
vote
1answer
768 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 ...
0
votes
2answers
212 views

sudo: script launched from another script won't redirect standard output

I'm using AIX 5.3 with sudo 1.6.9p23. Sudoers file grants user fcomartin permission to run any command as user oas: fcomarti ALL=(oas) ALL User oas has a bash script called menu, which launches ...
5
votes
2answers
5k views

How do I find out if I am sudoer?

How does Linux system behave when I am not sudoer? Here is what happens if I try to use sudo: server:/tmp>$ sudo cal [sudo] password for user: Sorry, try again. Is it possible that I just don't ...
4
votes
1answer
162 views

Emptying a directory owned by another user weekly

I have a temp directory set up where users can place whatever files they need to send to other users via HTTP. The owner of this directory is an SFTP user, and cannot run cron jobs. I have one shell ...
1
vote
3answers
1k views

Root permission - username ALL=(ALL) ALL does not work

I'm a beginner. I'm trying to give my user root permissions, so I edited the sudoers file like this: black ALL=(ALL) ALL "black" is my username. But I still don't have root permissions, and ...
1
vote
1answer
920 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
946 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 ...
1
vote
2answers
638 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 ...
5
votes
2answers
4k 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 ...
2
votes
3answers
5k 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
3answers
2k 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: ...
2
votes
1answer
373 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 ...
2
votes
1answer
376 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 ...
11
votes
6answers
7k 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 ...
6
votes
1answer
3k views

Why can't sudo redirect stdout to /etc/file, but sudo 'nano' or 'cp' can?

Why does redirection, using sudo give me an error for the following commands? $ sudo printf "foo" >/etc/file bash: /etc/file: Permission denied $ sudo printf "foo" ~/file; cat ~file ...
5
votes
4answers
2k views

Allow users to run only specific binaries with root permissions/privileges

I would like to allow a specific user to be able to sudo /sbin/iptables only. I have a bash script which configures iptables. The problem is that configuring /sbin/iptables as sudoable is not enough ...
5
votes
2answers
9k views

How to get back sudo on Ubuntu?

I have done this: sudo chown -R myname /usr/ and now I can't use the sudo command because of this error: sudo: must be setuid root And as I read this means that the owner of this file ...
2
votes
2answers
536 views

How do I reset ownership on /usr/bin/sudo on centOS? [closed]

I accidentlly changed ownership of /usr/bin/sudo to my current user (i also did this for some other stuff in my /usr directory). I can't change any of them back because I need ownership of ...
1
vote
2answers
942 views

permission denied when executing a binary

I used these instructions to install mongodb on my OS X machine. I did not make the files owned by root though, I used my local user (markdsievers), and installed to /usr/local/mongodb and ...
7
votes
4answers
1k views

sudo permission denied but su grants permission

this is the first occurrence where su was required for me. I read an article about changing the value in /sys/devices/virtual/backlight/acpi_video0/brightness to alter my laptop's screen brightness. ...
1
vote
2answers
2k views

How to insert text into a root-owned file using sudo? [duplicate]

Possible Duplicate: Redirecting stdout to a file you don't have write permission on Running a command like sudo echo 'text' >> /file.txt fails with: bash: /file.txt: Permission ...
35
votes
5answers
3k views

Redirecting stdout to a file you don't have write permission on

When you attempt to modify a file without having write permissions on it, you get an error: > touch /tmp/foo && sudo chown root /tmp/foo > echo test > /tmp/foo zsh: permission ...