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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17
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How does the sticky bit work?

SUID The sticky bit applied to executable programs flagging the system to keep an image of the program in memory after the program finished running. But I don't know that what it's stored in ...
0
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2answers
840 views

Linux Permissions vsftpd

I have mybb installed and running in /var/www/forums. I have two users part of the www group, logan and www-data. I have the recursive permissions of forums directory set to: chmod -R 755 forums ...
0
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2answers
11 views

Unable to perform write & execute actions on ntfs partition. Not even with root privilege. Using arch linux.

Unable to perform write & execute actions on ntfs partition. ls -l shows that user have only the read permission. Group any others have non. i tried to copy some text from home to windows ...
4
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2answers
32 views

htop shows only the processes of the user that's running it?

On my old Debian Wheezy I see as a normal user without sudo all processes from all user in htop. On my new Debian Wheezy I only see my own processes. Old system kernel: 3.2.0-4 New system kernel: ...
2
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1answer
2k views

How can ubuntu/truecrypt be configured so users can mount volumes if-and-only-if they have proper permissions on the mount-point?

If I add the line: ALL= /usr/bin/truecrypt to the sudoers file this lets all users mount volumes at arbitrary mount-points. The problem is a user could create a truecrypt volume and then mount it at ...
1
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1answer
28 views

Set default permissions so only owner can read, execute and write for every new file and directory

I added this to my ~/.bashrc file: umask 077 So that every new file and directory has by default read, write and execute permissions. It does work with directories, but files only have write and ...
3
votes
3answers
75 views

Remove passphrase from private key and set specific file mode

If I set a passphrase on my private key like so: openssl rsa -des -in insecure.key -out secure.key and I remove the passphrase like so: openssl rsa -in secure.key -out insecure.key then my ...
2
votes
2answers
29 views

Broke permissions on /bin, /boot, and /dev; how to clean the mess?

I just made a terrible mistake, I tried to fix it by myself but I need some help. Due to a syntax error all files and folders permissions were being changed: thankfully I saw this while it was ...
1
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2answers
20 views

How to investigate what is modifying a directories permission on Linux?

We have an Ubuntu 12.04/apache server and a directory in the "/var/www/foo" and root permission. Something is repeatedly changes the permission of this directory. Question: How can we investigate, ...
4
votes
3answers
56 views

mkdir permissions do not correspond to umask (change depending on location)

Whenever I create new directories in my home (or its subdirectories) they do not have write permission, even though umask is set correctly. Files I make DO have write permission. [mmanary@seqap33 ~]$ ...
1
vote
1answer
25 views

Can't write on recently created EXT4 partition

On a new external hard drive (Intenso 05-1204-18A), I made (with GParted) two partitions : Disk /dev/sdc: 931.5 GiB, 1000204883968 bytes, 1953525164 sectors Units: sectors of 1 * 512 = 512 bytes ...
-1
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0answers
20 views

apache permissions

Would like to clarify a few things please. I run some Wordpress sites internally like so: root 9808 0.0 0.1 260180 9088 ? Ss 03:20 0:07 /httpd/bin/httpd -k start daemon 9809 ...
2
votes
1answer
29 views

Why was it necessary to restart apache webserver to copy files via php on newly mounted filer?

Scenario allready running Apache Webserver 2.4.2 on Solaris 5.10 newly added nfs mount as target for copying files via php executing cp via shell with the same user as the webserver works copying ...
1
vote
0answers
12 views

Centos 7 FTP Hidden Directory Issue

After setting up Centos 7 with a web server standard install and LAMP stack. I installed vsftpd. Everything works fine and configured it to accept passive to enable gui ftp programs. However, when ...
0
votes
1answer
30 views

Accidentally removed execute permission from root directory.

I accidentally did chmod 770 / which removed all access to the system. I booted to rescue mode, dropped to root shell and tried to chmod 755 /, but I get message changing permissions of /: read-only ...
2
votes
1answer
15 views

Can I use permissions or facls to limit the creation of files in a directory without limiting the creation of directories?

I have some directories with quite permissive permissions, which get cluttered up with files (scripts) created by lots of different users. I try to encourage people to create their own sub-directory ...
1
vote
1answer
62 views

Permission denied on mounted devices

I have checked many similar questions but the solutions didn't work for me. On my previous Debian wheezy installation I could mount devices from GUI with no permission problem and also after upgrading ...
0
votes
1answer
39 views

enable to write to file inspite we remove all file permissions

something isn’t clearly for me when I remove all permissions from file as chmod 000 I expected to get permissions denied when I write to file but still I can write to file as the following example can ...
1
vote
1answer
26 views

Understanding home folder permission

thisisme@ubuntu:/home$ ls -al total 28 drwxr-xr-x 4 root root 4096 4月 19 2012 . drwxr-xr-x 24 root root 4096 4月 9 12:34 .. drwxr-xr-x 66 thisisme thisisme 4096 4月 12 ...
0
votes
0answers
42 views

DD-WRT: /tmp exec permission

After making a simple hello world OpenWrt package I installed it to the /tmp folder on the dd-wrt device. The program shows up in ls /tmp but when I try to execute it, it shows me /tmp/helloworld: ...
3
votes
1answer
684 views

How do I allow user permissions to data on a Couchpotato and Sickbeard Plugin using Freenas

Trying to setup permissions for the plugins sickbeard / couchpotato. I’ve read almost every thread google / the forums have but haven’t really found a solution yet. I’m assuming it’s the data here: ...
5
votes
3answers
246 views

Setting multiple groups as directory owners

On my server I have directory /srv/svn. Is it possible to set this directory to have multiple group ownerships, for instance devFirmA, devFirmB and devFirmC? The point is, I want to subversion ...
16
votes
4answers
6k views

Wrongly set chmod / 777. Problems?

I was trying to run chmod -R 777 ./ but ended up typing chmod -R 777 / and set 777 on my entire machine. What can go wrong? How can I fix it?
3
votes
2answers
1k views

NFS partition mounted as read only

(Disclaimer: I've read "NFS sharing is read only" and I think it's not the same problem) I have just setup NFS on my raspberry (Raspbian) and I'm trying to access it from OSX. So far so good, I can ...
0
votes
0answers
45 views

Directories and files changed to unknown type [duplicate]

After breaking my Debian jessie system with the mistyped command: # chmod -R 0644 / now I am using a live CD to backup my data but all the files and directories are of unknown type now and ...
1
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2answers
53 views

Broken system after chmod -R 644 /

I use debian jessie and I have done one of those bad mistakes and broke my system with a mistyped command and worse mistakes that follow in such situations. Trying to fix some permissions I ...
1
vote
1answer
31 views

How to automatically get write access to newly created directories?

A share on the server is defined as follows [share] path = ... read only = no create mask = 0777 directory mask = 0777 force create mode = 0777 force directory mode = 0777 valid users = dobiasd It ...
1
vote
2answers
32 views

how can i chmod the files based on the results from find command

I have a situation where I need to find the files having World Write (WW) permission 666 and I need to re mediate such files with 664 .. for this I have used this command find /dir/stuct/path -perm ...
8
votes
2answers
29k views

Mount cifs Network Drive: write permissions and chown

I have access to a cifs network drive. When I mount it under my OSX machine, I can read and write from and to it. When I mount the drive in ubuntu, using: sudo mount -t cifs -o ...
0
votes
1answer
29 views

File permissions categories

So I am a little bit confused with File permissions categories. So here is what I do understand and correct me if I am mistaken. For every File , there is an Owner (one user) which have a symbol u ...
0
votes
1answer
37 views

Mess with permission files [duplicate]

i've written chmod 755 /etc/ and chmod 0644 /etc/ and now i find myself without access to anything,and inside the terminal where before there was username@system1: now there's I have no name!@system1: ...
2
votes
2answers
498 views

How to give Windows partions' file execute permission

I have installed Linux Mint 17 and Windows 8, as dual boot. 500GB hard disk has 5 partitions. Two of them are NTFS and the other 3 are ext4 partitions. When I log into Windows, I can not see any ...
2
votes
2answers
4k views

Give read-only access to specific folders?

I would like to give read-only access to a user but I want him/her to see only the exact folders I give access. for example he/she shouldn't travel around all the server and browse to all users ...
1
vote
1answer
23 views

Who can change ACL permissions?

I'm using ACL to control access to individual roots of webs for different instances of Apache and different groups of admins. I've got a Unix group admins-web22 for admins of a particular website and ...
1
vote
1answer
22 views

Oracle virtual box share folders when executing oracle command

I'm using Oracle Developer Days virtual box, which is a Linux distribution by Oracle for development environments (link). Not sure what distribution is it, but in case it was relevant: ...
-1
votes
0answers
27 views

store Unix file permissions on a VFAT partition

I want to use USB drives (DoKs as well as USB connected hard drives) to backup files from Linux systems in a way that: Does not require reformatting of the VFAT formatted drives, so space on them ...
2
votes
1answer
32 views

Why does chmod succeed on a file when the user does not have write permission on parent directory?

I am trying to understand file/dir permissions in Linux. A user can list the files in a directory using cd test ls -l Even if the user issuing above commands does not have read, write or execute ...
2
votes
3answers
6k views

How to remount as read-write a specific mount of device?

How to remount as read-write a specific mount of device? (one folder) The file is "Read-only file system", rw-r-r, so it not allow to change permissions. I need to replace that file, then change ...
2
votes
1answer
487 views

How can I get write access to my usb drives?

I have trouble writing to external drives. They are monuted automatically in Nautilus, but I can not copy anything there ('Paste' and 'create Folder' are just greyed out). Does Anyone have ideas what ...
10
votes
7answers
30k views

Problem to launch java at Debian: “error while loading shared libraries: libjli.so”

I'm trying to launch java: $ java -version java: error while loading shared libraries: libjli.so: cannot open shared object file: No such file or directory $ ldd ...
1
vote
1answer
33 views

Can I restrict sudoer nopasswd to directory?

Maybe I should rephrase - what is the most secure way to accomplish my needs? Details I am using WinSCP to modify my Apache document_root. The directory /var/www/html has an owner and group of root. ...
2
votes
3answers
58 views

Can a file be edited with the 'write' permission on it but not on its parent directory?

Suppose the owner/user doesn't have the write permission on a directory but he has it on a file under it. Can the file here be edited or not? If yes, is there any situation where the file cannot be ...
2
votes
2answers
445 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 ...
5
votes
2answers
70 views

rsync doesn't preserve directory ownership even with -a

I use this rsync invocation to backup my home directory: rsync -aARrx --info= --force --delete --info=progress2 -F "$USER_HOME" "$BACKUP_MNTPOINT" rsync man page says that -a implies -g and -o ...
19
votes
5answers
3k views

Understanding UNIX permissions and their attributes

I've never really got how chmod worked up until today. I followed a tutorial that explained a big deal to me. For example, I've read that you've got three different permission groups: owner (u) ...
1
vote
1answer
16 views

sane does not work as saned but as root it does

I have a plug computer that I want to use as scanner server using sane. It already worked with a different plug, so I know for sure that the scanner and sane are workable together. If I issue ...
3
votes
2answers
71 views

Setting correct permissions automatically for certain file type when file is copied from non-Linux file system

The main reason I want this is my heavy use of dircolors, especially for ls --color=auto. For example, whenever a .mp3 file is copied from NTFS, it will have permissions set by umask 022 which ought ...
4
votes
3answers
5k 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 ...
2
votes
0answers
17 views

Cleanup old /dev/pts files?

My company has a policy that sweeps all files on our AIX servers to see if any are world writeable. They are upset because there are some files in /dev/pts (a few with me as owner) that are world ...
0
votes
1answer
28 views

Unable to delete a file on different user's directory

I've two user's abc & xyz and the user abc has been added to the group xyz via usermod -a -G xyz abc and here the file permission on home directory of xyz i.e /home/xyz: drwxrwxr-x 2 xyz xyz ...