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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Executing a script from Nagios event handler fails to run

I have Nagios running on a webserver. For this one Nagios service check in particular, if it fails, it will run a script. This script is triggered via Nagios event handlers. Nagios event handler ...
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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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902 views

Symbolic link to a socket

From a security point of view, is it safe to create a symbolic link to a socket file? The following bits of context refer to the deployment of a web application on a shared hosting service. $ ls -al ...
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Login to super user for running script

I have sample.sh script in /u01/dump location. I'm running it from root. My requirement is while running the sample.sh script it has to be login as oracle1 user using SU (super user) and display all ...
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How to restore default group/user ownership of all files under /var?

I accidentally changed /var owner/group to my username and then changed it back to root, but not all the /var folders' owners are root, so is there anyway to change back owner/group of files/folders ...
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584 views

Simple python web server doesn't execute CGI scripts

I set up a simple python web server by opening a terminal in a directory and doing python -m CGIHTTPServer There is a CGI script in the directory but when I type into the browser ...
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3answers
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read only access to all files in a specific sub-folder

I have got a specific folder located in "/home/.../reboot/". I have a series of users that require read-only access to the ever changing files within. My problem is that the same users are not ...
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1answer
4k views

Full access by group user of /var/www/html [duplicate]

Possible Duplicate: How to add write permissions for a group? On Centos 6 I'm trying to give full access to make and delete by the user mitch for /var/www/http. I did addgroup www and then ...
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What does “0” mean in the owner and group permission lists of a file/folder?

The question is in the title. What does the number 0 signify?
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1answer
486 views

Trying to install fonts on Linux Mint Lisa, but it looks like I have a permissions or ownership problem

I downloaded the Source Code Pro family of fonts, but cannot install them via the Font Viewer. If I give myself admin powers, I can manually add them to the rest of the fonts, so I'm guessing it's a ...
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1answer
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Cannot delete a file - permission denied - why?

[db2inst1][testing ~/sqllib/db2dump] rm db2diag.log rm: cannot remove `db2diag.log': Permission denied [db2inst1][testing ~/sqllib/db2dump] id uid=1002(db2inst1) gid=107(db2iadm1) ...
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1answer
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scp permission denied after 'hardening' with bastille

I recently 'hardened' two Ubuntu servers using Bastille, and now I get permission denied: scp whenever I try to scp files in. SSH login works fine. I've tried adding an /scp-dump folder with 777 ...
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3answers
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How to grant read/write to specific user in any existent or future subdirectory of a given directory?

I'm a complete newbie in system administration and I'm doing this as a hobby. I host my own git repository on a VPS. Let's say my user is john. I'm using the ssh protocol to access my git ...
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4answers
9k views

How to permanently change the file/directory permission [closed]

How do I change the permission of file/directories such that I am able to create, edit, delete files/directories anywhere in my system? Currently I am using Ubuntu 12.04. I tried sudo chmod 777 -r ...
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1answer
5k views

How to force rsync to overwrite read-only archive files?

I'm using rsync to copy some source code. The copied code must not be modified at the destination place by my mistake while code editing. So I set --chmod=u-w flag to make it read-only after copying. ...
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794 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 ...
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4k views

How to revert chown command?

If I run: sudo chown -R user:user / Can I revert it to what it was before I ran it?
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1answer
206 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 ...
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2answers
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I want to modify root files while also being able to create non-root files in a single text editor session.

Catch 22: If I open my text editor without using sudo, I don't have permission to save any changes. If I open it with root privileges, any files I create are owned by root. I want to be able to ...
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2answers
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Why can rm remove read-only files?

If I create a file and then change its permissions to 444 (read-only), how come rm can remove it? If I do this: echo test > test.txt chmod 444 test.txt rm test.txt ...rm will ask if I want to ...
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2answers
424 views

SMB Mount To Windows Server Appears to Lock up. Any Ideas?

We are running CentOS 6.3 with all the latest updates. (Attempt to resolve this issue) The Server I am trying to connect to is a Windows Server 2008 R2 box. Though this applies to our old SBS'03 Box ...
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3answers
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How do I backup via rsync to a remote machine, preserving permissions and ownership?

Drive A is 2TB in a closet at home. Drive B is 2TB in my office at work. I'd like drive A to be the one I use regularly and to have rsync mirror A to B nightly/weekly. The problem I have with this ...
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Apache 403 Forbidden on sub folders?

I can view all files in the root directory (/var/www) but as soon as i enter a sub directory (eg /var/www/test) i get a 403 Forbidden error. I'm running Ubuntu 12.04.01. Have tried searching for ...
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1answer
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Does the suid bit have any meaning for device files?

Does the suid bit have any special meaning for device files in Linux ?
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5answers
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Transfer files using scp: permission denied

I try to transfer files from remote computer using ssh to my computer : scp My_file.txt user_id@server:/Home This should put My_file.txt in the home folder on my own computer, right? I get ...
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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 ...
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How to modify write permission on current buffer in emacs?

Is it possible to change the write permissions on a file from inside emacs, without killing/re-opening the buffer? Sometimes I forget to modify the permissions on a file before opening it. I can ...
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5answers
795 views

How to setup password-less ssh with RSA keys

I am trying to setup a password-less SSH configuration between two machines and am having trouble. There are a ton of howtos out there that I have followed and have had no success. Here are ...
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1answer
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Group within group file permissions

I tried finding this on here, but couldn't so sorry if it's a duplicate. Say I have 2 groups and a user: group1, group2, user1 with the following structure: group1 is a member of group 2, user1 is a ...
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2answers
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Mount USB drive (FAT32) so all users can write to it

I have a USB FAT32 drive that is on /dev/sda2. I've mounted it as /media/bigdrive however, I get permission denied whenever I try to touch a file there as a non root user. When I run mount I can see ...
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2answers
344 views

Installing a shell (e.g. zsh) without being system admistrator [duplicate]

Possible Duplicate: how can I use bash as my login shell when my sysadmin refuses to let me change it Say I have rwx permissions to a directory (my home directory). Can I install a shell ...
0
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1answer
603 views

Script with root permission [duplicate]

Possible Duplicate: Redirecting stdout to a file you don't have write permission on I am creating a script to change the brightness of my laptop. I discovered that I can do this using ...
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Can files be created with permissions set on the command line?

When creating directories, mkdir -m <mode> <dir> provides for creating one or more directories with the given mode/permissions set (atomically). Is there an equivalent for creating files, ...
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encfs with expect access denied

If I execute script #!/usr/bin/expect set pass [lindex $argv 0] spawn encfs -v {CRIPT_DIR} {MNT_DIR} -o nonempty expect "*EncFS Password:*" send "$pass\r" expect eof expect script output: ...
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1answer
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Running setuid binary temporarily without setuid?

Currently setting up xpra, which wants to run an X instance as non-root using the dummy driver, but the system Xorg binary is SUID. Since the system auto-updates, I would prefer not making and ...
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1answer
709 views

Regarding .gvfs not letting delete a user's home directory

I am using Fedora 9. I removed the user using userdel -r command. The user is removed, but the home directory still remains. When I tried to remove the home directory (rm -rf /home/user/), I get the ...
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2answers
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How to give user root permissions?

I just installed Arch. Works great. I created a new user, logged in with it and now I'm trying to install several thing with pacman. But I keep getting the error: error: you cannot perform this ...
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3answers
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rsync and write permissions at the target

I always wondered why rsync tries to transfer a file to a remote location where it has read/execute permissions for the target dir, but no write permissions to create the actual destination file. This ...
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1answer
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Executing a script in zsh - file permissions

I'm confused about execute file permissions not behaving as I expect. Probably because my expectations are wrong. Anyway: I have a script file, for simplicity is just called s, located in ~/bin. For ...
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2answers
865 views

Start Vim as my user with root privileges

I have my custom Vim files in ~/.vim and settings in ~/.vimrc. However, sometimes I have to edit some files in /etc and such. If I start Vim like this: $ sudo vim /etc/rc.conf I lose my config ...
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659 views

Clarify File Permissions

I've been searching for information about file/directory permissions, and I keep finding the same basic principles. What I can't find anywhere is a rationale for determining what permissions to give ...
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1answer
642 views

Problem opening .dvi files

I would like to know why my Lubuntu 11.10 does not open my .dvi files created with Latex. Please, can anybody help me solve this problem? When I use evince L1.dvi, in the terminal, the evince ...
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Allowing write access to an SMB mounted drive

Following this guide I was able to get my Samba share to mount on my Ubuntu 12.04 system. I can navigate the folders just fine. However I cannot create a directory nor create a file. I get the ...
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1answer
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Can't rename a directory that I own

I have a directory with a big load of sub directories. I own all of them, and the permissions are all 777. pascal@azazel /box $ ls -al total 147872 drwxr-xr-x 293 root root 12288 aoû 22 19:44 ...
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Windows domain account can't create files via samba share, but can do this in linux shell, why?

I'm migrating tomcat server from windows to linux (CentOS 6.3 64bit), and want to use samba to share tomcat directory to technical department staffs (windows domain users) with read+write rights. ...
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720 views

Correct owner, group and permissions when mounting an image file

Suppose I have an image home.img of a home partition of another linux machine (B). On that machine there is a users userB and there is a special group, groupB. Consider for example a file fileB in the ...
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1answer
460 views

Group Permission on public_html [duplicate]

Possible Duplicate: Permissions: What's the right way to give Apache more user permissions? Before I knew better, I used /home/someuser/public_html/scripts as a place from which shared ...
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4answers
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Best way to make encrypted backups while preserving permissions to a windows file system

For my home network I wanted to buy a NAS which supports disk encryption and NFS since it is important for me that the backup is encrypted but also that it preserves owner, groups and permissions ...
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1answer
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Why this error: “cannot create directory `foo': Permission denied”

I get this error when I try creating a directory: [rex <03:57 PM> /var/tmp/pb82]$ mkdir foo mkdir: cannot create directory `foo': Permission denied But doesn't the following output indicate ...
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1answer
633 views

Prevent directory permission change (or cronjob to work around)

I have a HostGator dedicated server running CentOS. I have a folder on one user's account where I want all users to be able to have read access, so we keep it chmod'd to 755. HG has a script that runs ...