Permissions are the unix way of controlling access to resources such as files, directories and devices and may be specified for an owner, group, or all users.

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4
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142 views

Tracing executable without read permissions

I found some surprising behavior on Ubuntu 14.04 when using strace on an executable, which I do not have read permission on. I wonder if this is a bug, or if some standard mandates this obscure ...
4
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571 views

How do I let an SDL app (not running as root) use the console

I want to use an SDL-based program to display graphics on the console, without having to log on from the console, and without running the program as root. For example, I want to be able to run it via ...
3
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127 views

Permission problems. Can't retrieve inbox mails from dovecot

I got a VPS server at a webhoster which has CentOS 6.6 as operating system. Because I have multiple domains which are used by various people this server is going to serve multiple roles: nameserver ...
3
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40 views

Protecting my server from it's own users

Are there any tools to check my server's file system for permission vulnerabilities? My server is a low security web and email server running our local email and website. Anyone in my organization ...
3
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0answers
4k views

fatal: bad ownership or modes for chroot directory component “/”

I used to be able to connect via ssh with the user I have created but now I keep getting: "Write Failed: Broken Pipe" and I can only connect as root In the ssh auth.log I get the following: ...
3
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0answers
549 views

Network Manager doesn't show Wireless connection

I've just installed on my Debian Sid with XFCE4 network manager, but I have a problem, no wireless connection are shown. What Should I do? I used to use wicd but I had problems to connect to free ...
3
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0answers
2k views

Samba's “inherit permissions” does not inherit modes for other

I have a share with "inherit permissions = yes". I have a directory in the share with mode rwxrwsr-x. If I create a subdirectory, the modes are rwxrws---. The same happens with a parent directory with ...
2
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39 views

Disable viewing/listing rights to users

I'm new to linux administration and I'm not sure how to search for this problem. When I create a new user, s/he can browse the filesystem. E.g. ll /. How can I restrict the user to a few select ...
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51 views

Maildir permissions for courier

I'm having difficulty with maildir permissions for Courier, an IMAP server I've installed on a box running Debian Wheezy. The mail directory I use is /var/mail/users, with the following permissions: ...
2
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161 views

Logrotate no longer reads symlinked configuration file due to non-root ownership

We are currently upgrading from Ubuntu 12.04 LTS to 14.04 LTS on our ruby on rails application servers, and have noticed that the log files are no longer rotating. On both machines we have a file ...
2
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0answers
84 views

Easiest way to sandbox an user

I'd like to sandbox a user so that they can only read files under /media/shared/somefolder. What's the easiest way to accomplish this? Users/groups? ACL? AppArmor? Some context: Plex Media Server is ...
2
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0answers
351 views

Java plugin not working with FireFox 24.3.0 on Red Hat Enterprise Linux 5.10

In the about:plugin tab, there is not Java plugin. I have created the symbolic link as suggested. The output of the 'ls -al' command is: lrwxrwxrwx 1 shehab shehab 58 Jun 4 11:21 libnpjp2.so -> ...
2
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461 views

Give domain users permissions on cifs shares?

I am using CentOS 6.5 - users authenticate using winbind, all are domain users except for root. /home is mapped to a cifs share on a windows server in /etc/fstab with this line: \\server\home$ /home ...
2
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0answers
1k views

CentOS 6.5 sound permissions

I am trying to configure ALSA for a CentOS 6.5 minimal install, my problem is non-root users do not have permission to access the sound devices in /dev/snd because the files are missing access control ...
2
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0answers
105 views

NFS mount edits on local NFS-exported filesystem change permissions on the remote NFS mount

I believe there is a noperm or something to that effect option in NFS, but how do I make sure that if server A is exporting /opt/nfs and it is mounted as an NFS mount on server b /export/serverA that ...
2
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0answers
163 views

New files getting wrong permissions from setacl

I'm trying to create a file from windows on a mapped samba share, but after creating the file, I'm unable to edit it. For some reason the mask is changing to rw- even though my default is set to rwx. ...
2
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0answers
3k views

Permission denied for user accessing mount

Using root I can mount another Linux share no problem. root@crunchbang:/mnt# mkdir javalib root@crunchbang:/mnt# mount -t cifs //10.1.3.7/javalib ./javalib -o username=guest Root can read/write to ...
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0answers
58 views

LXC: Have rootfs mounted without nosuid

I have the container's rootfs in a volume mounted with the nosuid option. When I start the container, its / mounted is then also mounted nosuid, which breaks programs such as sudo. How can I avoid ...
2
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0answers
2k views

Permission denied when Ubuntu is attempting to mount to a remote Windows share folder

Fellow guys, I encountered the error when I's mounting my Ubuntu server to a remote Windows share folder, the following is the error on terminal after I typed command line 'mount -a': mount ...
2
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122 views

Problem with encrypting /var/www and ikiwiki

I tried to encrypt /var/www with encfs. To do so I did following: mv /var/www /var/www.bak mkdir /var/www_enc encfs --public /var/www_enc /var/www cp -a /var/www.bak/* /var/www/ /etc/init.d/apache2 ...
2
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230 views

Samba: system group mapping

I have w2008R2 PDC and Linux server with samba and winbind. Now I'd like to add some domain users to Unix adm group in AD. Let's say I have adm group defined in AD, and every user from this group ...
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839 views

Owner & Group setting for OpenCart install on CentOS 6.3

I'm setting up a development server on a HP microserver with CentOS 6.3. I'm relatively new to Linux and have ran into some issues/confusion. I have the server fully setup/updated with yum. It's a ...
2
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0answers
559 views

proper permissions under HTTP root with Apache2 + FastCGI + Suexec

I currently have a setup which runs Apache2 + FastCGI PHP + Suexec. As an example, I'm using /mnt/data/www/vhosts/inflex.co.uk/htdocs as a DocRoot for one of my virtual hosts. I have a script ...
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823 views

Permissions for Apache and FTPd users

I'd like advice about permissions on directories and files on a web/ftp server. Here is my situation: Debian Server with those user:group userme:userme for SSH www-data:www-data for apache/php ...
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15 views

Set hostname without root, and without CAP_SYS_ADMIN

I have an application that I want to be able to change the hostname in Linux. Currently doing so by running the hostname command. I don't want to set CAP_SYS_ADMIN either. I also don't want to edit ...
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0answers
10 views

Dealing with git permission errors on root mounted partition

I am trying to clone a git repository from my home directory to a cifs partition, but I keep getting this file permission error. [cguest@devserver groupmount]$ pwd /mnt/groupmount [cguest@devserver ...
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13 views

How do I move a vmware guest machine to another user?

I have 2 users in my computer running Arch Linux. I recently moved a virtual installation of windows 7 from one user to another. I changed the owner of the moved folder to the new user recursively. I ...
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56 views

Linux Executable with Unknown type asking to be executable every time I run it in Nemo

When I try to open an executable with the type Unknown I get a message saying: "The file 'file name' has no known programs associated with it. If you trust the source of this file, and have ...
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0answers
42 views

Linux: how to run a program with rw access to only a folder

How can I execute a program in a way that all the system is RO and only some folders are RW? Eg: steam (:P) roexec --rw ~/.steam steam Is there any tool that allows me to do this? I've tried mount ...
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0answers
56 views

ssh not using ~/.ssh/config, even after I play around with permissions

I tried modifying my ~/.ssh/config file to allow automatic fast X forwarding as per this site http://xmodulo.com/how-to-speed-up-x11-forwarding-in-ssh.html I then tried logging into a server and ...
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0answers
47 views

Is file creation atomic?

I have a problem to solve: I just can make one CURL operation each second, but this operation can send up to 40 parameters. Those parameters are Id's. I have one web site that may sometimes ask for ...
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0answers
16 views

give group permissions to specific device

I have a panning web camera I built, (future robot arm). The camera pans via a web interface (cgi scripts and JS interface) which access an arduino. To enable sending of commands via the interface, I ...
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0answers
28 views

How can I set a group policy to all access on all folders except one?

I am currently making a test environment where users will be going through a network administration course with different levels they must complete. Due to the nature of the course, we want to give ...
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0answers
84 views

How to gain ownership of external HDD (and all files/folders) mounted to /mnt

I've plugged in a USB Hard Drive to my new Debian Jessie machine. I've got it to auto-mount by updating /etc/fstab: UUID=21AE-9B96 /mnt/local/ext001 vfat defaults 0 2 ...but it's owner is root and ...
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271 views

Tomcat unable to create file in dir owned by same group

I have a server running Tomcat, and I need Tomcat to create a file in a particular folder. Tomcat (technically a Java app) runs as the user 'tomcat', as evidenced by top: #top 1251 tomcat 20 0 ...
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0answers
44 views

id mapping of NFS does not work for all directories

I have an NFS server/client setup. On both server and client, the user me exists and has the same UID. If I mount the /home directory from the NFS server on the client, I see that nobody owns the ...
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41 views

Copying files to a directory shared via ACL doesn't get default mask

I'm trying to setup a simple shared directory on an ext4 filesystem for a group of users to work on. Let's say i just need to give all permissions to all users belonging to the group "workgroup" to ...
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62 views

How do I recursively apply default ACLs of a directory to its descendants?

If I have a directory with default ACL entries assigned to it, but some or all of its descendant files and sub-directories have access or default ACLs that do not agree with those defaults, how do I ...
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0answers
17 views

After restoring a backup my permissions seem to be borked

I made a complete backup of the system with "rsync -aAXv", and set up my encryption. After restoring everything, and booting up and trying to login, openbox didn't want to start, and "startx" didn't ...
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260 views

Permission denied when running logrotate with anacron

I am trying to figure out what is causing anacron to send me the following error message: /etc/cron.daily/logrotate: /var/log/mariadb/mariadb.log-20140710.gz: Permission denied error: error running ...
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70 views

Limit program execution to a list of arguments

I would like that my Unix users can only run a specific command insecurecommand with a controlled list of arguments stored in a file. The only solution I have found at this time is to : Create a ...
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0answers
35 views

Traffic Control user permission

My users need to emulate packet loss on RTP video streams to achieve visual effects. We are in a artistic environment and don't worry about security. The application works only as super user. I ...
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0answers
651 views

checking sendmail status as NON root user

I am in the process of converting to CentOS 6.5 from 5.5 and need a way to check if sendmail is on or not. For reasons I don't want to go through, I need to be able to check if sendmail is ON as a ...
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0answers
31 views

Changing pasword for debian live

I have a hooks file, in the hooks folder, that looks like this: echo "root:rootpw" | chpasswd echo "user:userpw" | chpasswd After boot, Debian asks for user and password. When I type user along ...
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132 views

Can’t figure out Samba file share permissions as needed.

I’m in the final project class for my degree and my group has to have a Linux server that supports a Windows environment. With the files in the file share need to be read only, can be edited and then ...
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0answers
42 views

External disk - how to ensure readable by all without needing root perms?

I have an external HDD. It's portable, so I plug it in all over the place. Needless to say, these different places have different passwd files and uids. The files are mine and I need to access them ...
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44 views

mount: fmask options is not working

Few days ago I did this question. But now I have another problem, related, but new. Scenario: I have a flash drive (vfat) mounted in /media/flash the filesystem node is /dev/sdb1. according to ...
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0answers
525 views

Save motion output videos in USB Drive

I'm using a USB drive in my Raspberry to store my website. Now I want also save my videos made with motion. I wasn't able to save in a folder different from /tmp/motion so googling I found I had to ...
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0answers
1k views

Reading apache error logs from php

I have apache2 logs at :/var/log/apache2/error.log which has permission: -rw-r----- 1 root adm 127140 Mar 20 12:54 /var/log/apache2/error.log for the sake of accessing from php I changed the ...
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241 views

Thunar: “Unable to find or create wastebasket directory” on samba share

I have a samba share directory that is mounted on my machine as: //xxx/home_private /media/home_private cifs rw,noperm,credentials=/home/xx/samba_perm.txt 0 0 When I tried to delete file using ...