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Full Discussion: Restrict user access
Operating Systems Linux Red Hat Restrict user access Post 302583185 by hedkandi on Monday 19th of December 2011 09:38:03 PM
Old 12-19-2011
Hi Verde

I thought of the same thing, there's no reason giving fancy restriction to the user unless he's removed from group 0, and ACL does have mysterious ways working with permissions and maskings

If I were to use ACLs, say to allow user ZODCIFUSR to have read only access for directory and files under /usr/sap, how would the command be? Is this correct?

Code:
setfacl -m d u:ZODCIFUSR /usr/sap

Also I did a bit of Googling and it says that the permissions and ownerships are inherited; even after using mv or cp -p command. Is this true?
 

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LFC-GETACL(1)							 LFC User Commands						     LFC-GETACL(1)

NAME
lfc-getacl - get LFC directory/file access control lists SYNOPSIS
lfc-getacl [-a] [-d] path... DESCRIPTION
lfc-getacl gets the Access Control List associated with a LFC directory/file. For each path, it displays the file name, owner, the group, and the Access Control List (ACL) if present. If a directory has a default ACL, lfc-getacl also displays the default ACL. Regular files cannot have default ACLs. The output looks like: # file: filename # owner: username # group: groupname user::perm user:uid:perm group::perm group:gid:perm mask:perm other:perm default:user::perm default:user:uid:perm default:group::perm default:group:gid:perm default:mask:perm default:other:perm The first "user" entry gives the permissions granted to the owner of the file. The following "user" entries show the permissions granted to specific users, they are sorted in ascending order of uid. The first "group" entry gives the permissions granted to the group owner of the file. The following "group" entries show the permissions granted to specific groups, they are sorted in ascending order of gid. The "mask" entry is the maximum permission granted to specific users or groups. It does not affect the "owner" and "other" permissions. The "mask" entry must be present if there are specific "user" or "group" entries. "default" entries associated with a directory are inherited as access ACL by the files or sub-directories created in that directory. The umask is not used. Sub-directories also inherit the default ACL as default ACL. As soon as there is one default ACL entry, the 3 default ACL base entries (default user, default group, default other) must be present. The entry processing conforms to the Posix 1003.1e draft standard 17. path specifies the LFC pathname. If path does not start with /, it is prefixed by the content of the LFC_HOME environment variable. uid is displayed as the username if known else as the numeric id. gid is displayed as the groupname if known else as the numeric id. perm is expressed as a combination of characters rwx- OPTIONS
-a only display the access ACL. -d only display the default ACL. EXAMPLES
lfc-getacl /grid/atlas/test/file.log/d2 # file: /grid/atlas/test/file.log/d2 # owner: baud # group: c3 user::rwx group::r-x #effective:r-x other::r-x default:user::rwx default:group::r-x default:other::r-x EXIT STATUS
This program returns 0 if the operation was successful or >0 if the operation failed. SEE ALSO
Castor_limits(4), lfc_chmod(3), lfc_chown(3) AUTHOR
LCG Grid Deployment Team LFC
$Date: 2005/03/02 08:32:12 $ LFC-GETACL(1)
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