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Top Forums UNIX for Advanced & Expert Users Permissions on a directory in /home for all users Post 302921852 by Don Cragun on Monday 20th of October 2014 02:30:49 PM
Old 10-20-2014
And you have now set it up so that no user on your system has any private files; every file that they create in any directory on your system will be readable and writeable by every other user in the same group. Fortunately, I use the Korn shell instead of bash, so this wouldn't affect me.

Before you modified everybody'a .bashrc, did you at least warn them that they need to undo what you did or manually chmod every file that they create in any other directory?

Did you consider just asking users in this group to chmod files they create under this shared directory.

Did you consider writing a set-UID application that would allow users in that group to change the mode of any file under that directory (AND ONLY under that direcotry) to something any user in the group could use (and send a note to the offending file's creator and that person's supervisor) when it was needed?

At any company I've ever worked for, what you did would be a fireable offense. Please reconsider this action.
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LCHGRP(3)								 1								 LCHGRP(3)

lchgrp - Changes group ownership of symlink

SYNOPSIS
bool lchgrp (string $filename, mixed $group) DESCRIPTION
Attempts to change the group of the symlink $filename to $group. Only the superuser may change the group of a symlink arbitrarily; other users may change the group of a symlink to any group of which that user is a member. PARAMETERS
o $filename - Path to the symlink. o $group - The group specified by name or number. RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 Changing the group of a symbolic link <?php $target = 'output.php'; $link = 'output.html'; symlink($target, $link); lchgrp($link, 8); ?> NOTES
Note This function will not work on remote files as the file to be examined must be accessible via the server's filesystem. Note When safe mode is enabled, PHP checks whether the files or directories being operated upon have the same UID (owner) as the script that is being executed. Note This function is not implemented on Windows platforms. SEE ALSO
chgrp(3), lchown(3), chown(3), chmod(3). PHP Documentation Group LCHGRP(3)
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