Visit Our UNIX and Linux User Community


Access permissions chmod 606


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Access permissions chmod 606
# 8  
Old 09-03-2013
This is an example of what RudiC mentioned:
Code:
 ls -ld tmp
drwxrwxrwt   8 root     sys         2808 Sep  3 15:00 tmp

Only the owner of a file can delete the file. To prevent access create a director like tmp above one level below a directory
with

Code:
drwxr-x---   8 root     somegroup         2808 Sep  3 15:00 /somedir

You then have a directory hierarchy of /somedir/tmp, where only users in somegroup can access tmp.

Last edited by jim mcnamara; 09-03-2013 at 06:27 PM..
 

Previous Thread | Next Thread
Test Your Knowledge in Computers #872
Difficulty: Medium
In computer science, self-modifying code is code that alters its own instructions while it is executing.
True or False?

10 More Discussions You Might Find Interesting

1. Linux

Permissions and access to data

Hi Operating system Red Hat Enterprise 5.8, Data access Mac/PC environment on various OS levels. Access via smb I am trying to set up a data shared area where a user group can read and write to its own directory, but can only write to another groups directory. Example: I have set up two... (1 Reply)
Discussion started by: treds
1 Replies

2. OS X (Apple)

Change access permissions

I purchased a 2TB hard drive, split it into two partitions, and formatted it as NTFS. I want to use the drive on my pc and my mac. How can I change the access permissions so Mac OS 10.4.11 will let me write to the drive? I tried this: $ chmod +a "admin allow write" /volumes/V2_Mac chmod:... (3 Replies)
Discussion started by: Me&MyMac
3 Replies

3. UNIX for Advanced & Expert Users

file access permissions

Hi everybody, following is the scenario; OS HP UX 11.23 two users: # id bodi uid=109(bodi) gid=20(users) groups=1(other),2(bin),3(sys),106(oinstall) # id ossmed uid=121(ossmed) gid=20(users) umask 077 directory name /home/mydir directory permissions drwxrwxrwx requirement: to... (1 Reply)
Discussion started by: ajays
1 Replies

4. UNIX for Dummies Questions & Answers

changing permissions on a 444 file (ie chmod 444)

if I have a file set to permisions 444 (r-- r-- r--) should anyone other than the owner and root be able to change these permissions or delete the file. Apologies if this is a no-brainer but I cant test it myself and someone in our organisation is playin around with files they shouldnt be (1 Reply)
Discussion started by: ajcannon
1 Replies

5. UNIX for Dummies Questions & Answers

Unix chmod permissions

Hello all, Trying to do the following. 1. Run Windows installer from a unix server. 2. Let user run the shortcut but not allow access to the folder where the exe itself is running. What I have done so far: 1. Copied the application to the server and placed in a folder called "data".... (2 Replies)
Discussion started by: whiterabbit
2 Replies

6. UNIX for Dummies Questions & Answers

ls and chmod numeric permissions

Hello, When I do a "ls -l" I can see my directories have drwxr-xr-xr. I am more used to the chmod numerical syntax like 755. Is there an easy way to list out the numerical permissions rather than rwx etc. (1 Reply)
Discussion started by: rondebbs
1 Replies

7. UNIX for Advanced & Expert Users

chmod (permissions) * not working on remote server

Hi gurus ! I am developing a FTP script which will copy all the files from one server to another server and then I need to use CHMOD 755 * to set permissions of all the files just copied to the remote server. mput * chmod 755 * CHMOD gives me an error CHMOD works fine If I specify... (3 Replies)
Discussion started by: sdlayeeq
3 Replies

8. UNIX for Dummies Questions & Answers

chmod permissions

Is there any way that you can set it up so when you create a file it has the chmod permissions of u+x? I am not a root user on the system (1 Reply)
Discussion started by: himurak
1 Replies

9. UNIX for Dummies Questions & Answers

directory permissions and CHMOD

I am working on a new UNIX box that has been delivered to us, and noticed that the /home directory has 555 permissions on it (dr-xr-xr-x). Any attempt to create write permissions fails on this directory (such as chmod 777), responding only with a message; chmod: WARNING: can't change home ... (3 Replies)
Discussion started by: ncarmstrong
3 Replies

10. UNIX for Dummies Questions & Answers

root access on sun os and permissions

Currently have root access to our own boxes on site. HQ wants to take root access away from us. What does root access provide that is unavailable for users as it is essential for us to keep local control. We log in as users but have su for special needs. On all other os boxes we have admin... (2 Replies)
Discussion started by: allinone
2 Replies
CHMOD(1)								FSF								  CHMOD(1)

NAME
chmod - change file access permissions SYNOPSIS
chmod [OPTION]... MODE[,MODE]... FILE... chmod [OPTION]... OCTAL-MODE FILE... chmod [OPTION]... --reference=RFILE FILE... DESCRIPTION
This manual page documents the GNU version of chmod. chmod changes the permissions of each given file according to mode, which can be either a symbolic representation of changes to make, or an octal number representing the bit pattern for the new permissions. The format of a symbolic mode is `[ugoa...][[+-=][rwxXstugo...]...][,...]'. Multiple symbolic operations can be given, separated by com- mas. A combination of the letters `ugoa' controls which users' access to the file will be changed: the user who owns it (u), other users in the file's group (g), other users not in the file's group (o), or all users (a). If none of these are given, the effect is as if `a' were given, but bits that are set in the umask are not affected. The operator `+' causes the permissions selected to be added to the existing permissions of each file; `-' causes them to be removed; and `=' causes them to be the only permissions that the file has. The letters `rwxXstugo' select the new permissions for the affected users: read (r), write (w), execute (or access for directories) (x), execute only if the file is a directory or already has execute permission for some user (X), set user or group ID on execution (s), sticky (t), the permissions granted to the user who owns the file (u), the permissions granted to other users who are members of the file's group (g), and the permissions granted to users that are in neither of the two preceding categories (o). A numeric mode is from one to four octal digits (0-7), derived by adding up the bits with values 4, 2, and 1. Any omitted digits are assumed to be leading zeros. The first digit selects the set user ID (4) and set group ID (2) and sticky (1) attributes. The second digit selects permissions for the user who owns the file: read (4), write (2), and execute (1); the third selects permissions for other users in the file's group, with the same values; and the fourth for other users not in the file's group, with the same values. chmod never changes the permissions of symbolic links; the chmod system call cannot change their permissions. This is not a problem since the permissions of symbolic links are never used. However, for each symbolic link listed on the command line, chmod changes the permis- sions of the pointed-to file. In contrast, chmod ignores symbolic links encountered during recursive directory traversals. STICKY FILES
On older Unix systems, the sticky bit caused executable files to be hoarded in swap space. This feature is not useful on modern VM sys- tems, and the Linux kernel ignores the sticky bit on files. Other kernels may use the sticky bit on files for system-defined purposes. On some systems, only the superuser can set the sticky bit on files. STICKY DIRECTORIES
When the sticky bit is set on a directory, files in that directory may be unlinked or renamed only by root or their owner. Without the sticky bit, anyone able to write to the directory can delete or rename files. The sticky bit is commonly found on directories, such as /tmp, that are world-writable. OPTIONS
Change the mode of each FILE to MODE. -c, --changes like verbose but report only when a change is made -f, --silent, --quiet suppress most error messages -v, --verbose output a diagnostic for every file processed --reference=RFILE use RFILE's mode instead of MODE values -R, --recursive change files and directories recursively --help display this help and exit --version output version information and exit Each MODE is one or more of the letters ugoa, one of the symbols +-= and one or more of the letters rwxXstugo. AUTHOR
Written by David MacKenzie. REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>. COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. SEE ALSO
The full documentation for chmod is maintained as a Texinfo manual. If the info and chmod programs are properly installed at your site, the command info chmod should give you access to the complete manual. chmod (coreutils) 4.5.3 February 2003 CHMOD(1)

Featured Tech Videos