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leon247 · #1 7th May 2008, 10:14

Hello,
i'm new on this site and i'm new on Linux, so forgive my
questions...
Becoming from others OS don't understand the group permission on files and folder. Only one group can have permissions? If I have two different groups, how can decide the permission on both groups over the same file?
I can decide permissions for owner, owner group and others.
If I have a second group that is different from other categories, how can I do it?

Thanks!

falko · #2 8th May 2008, 21:42

Quote:

Originally Posted by leon247

If I have a second group that is different from other categories, how can I do it?

Thanks!

You'd have to add all users from the second group to the first group.

leon247 · #3 8th May 2008, 22:16

Quote:

Originally Posted by falko

You'd have to add all users from the second group to the first group.

Thanks, you confirm that on Linux we can't have a situation like this:
owner (rwx)
first group (r-x)
second group (rwx)
others (---)

on the same file.
In this case I can only change permissions to others in r-x and delete
the first group. Is OK? The constraint is that all people can read that
file.

Thanks,
leon247

falko · #4 9th May 2008, 15:00

Quote:

Originally Posted by leon247

Thanks, you confirm that on Linux we can't have a situation like this:
owner (rwx)
first group (r-x)
second group (rwx)
others (---)

That's right, this isn't possible.

Quote:

Originally Posted by leon247

In this case I can only change permissions to others in r-x and delete
the first group. Is OK? The constraint is that all people can read that
file.

You can make it world-readable, but you don't need to delete the first group.

chipsafts · #5 9th May 2008, 18:28

You can't have more than 1 group in an ACL entry? I didn't know that. Explains a lot of problems.

Can 1 group be added to another group without listing individual names?

Does the same rule apply to being able to have mulitple users listed in an ACL ?