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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Screen session running as root? (it shouldn't be) node.js

cd /serv screen -R node {in the screen} node test.js C^a d initially, ls -l /dev/pts total 0 crw--w---- 1 tick-tock tty 136, 0 2011-04-19 16:41 0 crw--w---- 1 tick-tock tty 136, ...
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1answer
145 views

How to make Nautilus notice changes regarding group permissions

If I follow a process I mentioned here, I am supposed to log out and then in for the changes to take place. What about Nautilus? I tried to restart it and was still unsuccessful. The only way I have ...
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4answers
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How to configure permissions to allow file access?

I'm running Wowza Media Server on my server as "root". The problem is that all files created (recorded) by Wowza are "root:root" and aren't writable, editable, or deletable by any other users. How can ...
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2answers
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Make all files under a directory read-only without changing permissions?

First, some background: /dev/md1 is a RAID-0 array serving as primary file store. It is mounted to /var/smb. /dev/md2 is another RAID-0 array storing backup snapshots taken from /dev/md1. It is ...
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2answers
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Groups ssh user is apart of don't apply on SSHFS

I am connecting to a remote server over SSH but am running into a permissions issue. My remote account is thelq and primarily part of the group thelq. I'm also part of the generic group users. ...
3
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1answer
533 views

Changing group and retaining environment variables

On campus, everyone's primary group is user and each person is additionally associated to groups depending on the courses he or she is taking, lab he or she works at, etc. My coworker and I are ...
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3answers
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How to copy a file from my home folder to /usr

I'm trying to copy a file from my homedir to /usr. How do I setup the permissions to allow this? $ chmod 777 KeePass-2.14.zip $ cp KeePass-2.14.zip /usr/keepass/ cp: cannot create regular file ...
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2answers
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File permissions when transferring to another server

If I was to chmod 777 blah.sh on server A and then move it to server B, would it retain the permissions, or would it default to some other permissions once it hit server B?
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How do I give all the permissions to a file for a single user that's not me?

When I want to grant access to another user to my file, I use chmod 777 file, but if I want to be sure I'm granting permission just for that user, how can I do it? -- update The file is owned by ...
5
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2answers
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Why do I get an “rsync: failed to set times on … : Operation not permitted (1)” error on Ubuntu 10.10 with SME Server 7.4? [duplicate]

I am trying to cron an rsync via ssh between two fileservers that are running SME Server 7.4 and Ubuntu 10.10, respectively. The first rsync worked just fine (for reasons that I do not know), but now, ...
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Why can't root on one machine change nfs mounted content from another machine?

On my NFS server, I have the following export defined: #NFS exports Database /shared -alldirs -network=192.168.1 -mask=255.255.255.0 On my NFS client: 192.168.1.7:/shared /shared nfs rw 0 0 ...
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0answers
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“Permission denied” for running an executable file on a linux machine [closed]

I once generated an executable file using g++ on a linux box. But when I try to run this executable file on another linux machine, the system said "Permission denied". However, after I re-compile the ...
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6answers
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Is there a web based converter between rwx and the octal version?

I can never remember what the conversion is from something like rw-r--r-- to 644. Is there a simple web based converter between the 2?
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3answers
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Why is file ownership inconsistent between two systems mounting the same NFS share?

I have one IBM AIX server (serverA) which is connected to the san storage. I have created a volume group and also file system (jfs2) and mounted to directory /profit. After that I created a NFS ...
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3answers
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Permissions issues for shared directory on a server

The setup is we have a VPS running Debian Squeeze, and I've set up a shared directory for us to share files. So far I've followed this guide: ...
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2answers
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Permissions: What's the right way to give Apache more user permissions?

Context: I am making an in-browser control panel that gives me one button access to a library of scripts (.sh and .php) that I've written to process various kinds of data for a project. It's a "one ...
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2answers
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What directories/file permissions should i ensure are set?

I have a similar question about default software configuration. For this question i would like to ask What directories/file permissions should i ensure are set? Aprrently Is it normal to get ...
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5answers
901 views

debian security /etc permissions

I'm setting up a debian box with shared webhhosts. These users don't have ssh permissions, just ftp. The users are allowed to use PHP and I setup suphp for that so the php processes runs under their ...
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1answer
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I can't remove a directory tree with rm -rf

This seems very strange to me. I'm running kernel 2.6.37.2 and ran: ~]$ cp -r /proc/ here ~]$ rm -rf here I get some permission denies when copying as expected and I eventually hit Control-C. I get ...
4
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3answers
294 views

Give a warning when something is about to be deleted (by root)

I know that root can do anything, but is there a way to at least alert root that they are about to delete a folder that perhaps shouldn't be deleted? We keep a work directory in our /tmp folder, and ...
3
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1answer
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Default File Permissions - Ubuntu & VSFTPD

I have a server setup with Ubuntu, Apache2 and VSFTPD. We virtual host several sites on this machine. Typically, I use the same process to set up the new sites, but the default permissions for some ...
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I can't delete a file that I have write permissions for as a group member

$ touch testfile $ chmod g+w testfile $ sudo adduser user2 user1 $ stat -c'%a %A' testfile 664 -rw-rw-r-- $ su user2 Password: $ groups user2 user1 $ rm testfile rm: cannot remove `testfile': ...
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3answers
239 views

How to make files created by a specific user to have specific permissions by default

Here's a sequence of commands and the resulting output: $ touch testfile $ stat -c'%a %A' testfile 644 -rw-r--r-- What must I do so that when a user follows that sequence, I get this output ...
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1answer
725 views

Set visible directories for SFTP access?

I am setting up SFTP access to one of my machines running Linux with the Dropbear SSH server. When I SFTP onto the machine remotely, I can see the entire filesystem on it, even if I might not have ...
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2answers
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Why do we use su - and not just su?

I don't understand why su - is preferred over su to login as root.
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4answers
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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. ...
2
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1answer
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`chmod 770 folderName` restrics access to subdirectories & subfiles?

If I run chmod 770 ./folderName, then users who are not the owner or in the group owning ./folderName (i.e. users in the “others” category) cannot access ./folderName/folderB or ./folderName/fileC, ...
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5answers
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How to run part of a script with reduced privileges?

I have the following problem: On every machine running Postgresql there is a special user postgres. This user has administrative access to the database server. Now I want to write a Bash script that ...
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3answers
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How to “jail” a process without being root?

Were I root, I could simply create a dummy user/group, set file permissions accordingly and execute the process as that user. However I am not, so is there any way to achieve this without being root?
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2answers
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I added a user to a group, but group permissions on files still have no effect

I changed permissions of a file (chmod g+w testfile) and running ls -l testfile gives: -rwxrwxr-x 1 user1 user1 0 2011-01-24 20:36 testfile I then added a user to that group ("/etc/group" has ...
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4answers
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Backup script permission issue

I have a server with a user named deploy-user and have written a backup script to backup a number of websites associated with this user. However one of the sites I'm trying to backup has a directory ...
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5answers
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How do I recursively check permissions in reverse?

There's a command, I think it comes with apache, or is somehow related to it, that checks permissions, all the way down. So if I have /home/foo/bar/baz it will tell me what the permissions are for ...
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2answers
782 views

HPUX setacl leaves uid behind

I have a shell script that I execute after uninstalling a web application. The script is meant to clean up permissions that were needed during the execution of the application. find /opt/path -exec ...
3
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1answer
476 views

Permissions issues with mounting remote server into a specific folder

I'm doing the following to mount a remote server to a specific path on my server: sshfs user@remoteserver.com:/backup/folder/ /home/myuser/server-backups/ However when I mount the server the folder ...
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1answer
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How to (safely) move /tmp to a different volume?

Today the /tmp directory filled up on a machine at work. The problem was, it was on the root partition which wasn't very big. In order to fix this, a co-worker created a /new/tmp directory elsewhere, ...
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3answers
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Unix users, groups, and permissions

I don't understand unix users, groups, permissions, etc. For example, things managed by the chmod, chgrp, usermod, groupadd, etc. commands. How do all these things work?
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1answer
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simultaneously share /dev/videoX with multiple applications?

the goal is to use the same webcam for video chat apps and for home security at the same time. Currently, the webcam is working just fine with either VLC (or mjpg-streamer) and with Kopete - just not ...
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1answer
565 views

svn and webserver files ownerships

I've an issue with files ownerships. I have a drupal website and the "files" folder needs to be owned by "www-data" in order to let the users to upload files with php. However I'm now using svn and ...
2
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1answer
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How to assign correct permissions to both webserver and svn?

I've an issue with files ownerships in unix. I have a drupal website and the "files" folder needs to be owned by "www-data" in order to let the users to upload files with php. However I'm now using ...
2
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2answers
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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 ...
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2answers
342 views

How is file ownership affected across different systems?

As I understand Unix file systems, any file on a unix system must belong to a group and a user of the said system. A file cannot belong to a group or user that does not exist on the system. From that ...
2
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1answer
669 views

immutable-like flag for perms

Is there any chattr flag that would allow me to lock a file's unix permissons, and not change them without resetting the flag? The file itself should still be modifiable, I just want to prevent ... ...
3
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1answer
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what does the “a” in chattr +ia do?

what does the a in chattr +ia <filename> do? and why would you add the a in combination with the i? note: I know the i is for immutable
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1answer
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What's the best way to configure shared filesystem directories? (beyond standard unix perms)

I have multiple users on my system. I'd like to have shared directories like music, video. pictures etc. The problems is that I want users to be able to write any new files to any directory, but not ...
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How to get a program running with root privileges without using su or sudo

I have a bash script that needs to run with root privileges, but must be invoked by the normal user. Difficult part is that the script should not ask for a password, and I don't want to use the ...
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2answers
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Unix executable file permission vs runtime user's permissions

I have heard that it is good practice to run an executable as a user with a completely different privilege set than the owner of the task. In fact I heard that it is best to run it as a different user ...
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2answers
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How are file permissions calculated?

Using chmod I could set the permissions for a file, but if the parent ( .. ) directory had conflicting permissions, what would happen? And if I create a new file, using touch or something similiar, ...
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5answers
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How to create a file even root user can't delete it

How to create a file even root user can't delete it ?
6
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1answer
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how to view a directory's permission

What is the command with which you can directly view the permission bits of a directory?
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4answers
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How do I force the user to become root

I have written a bash script for use on my ubuntu box. Now I would like to prevent running this script under my own user and only able to run it as root (sudo). Is there a possibility to force this. ...