From Newsgroup: alt.os.linux

On 2026-03-17 21:19, Paul wrote:

Windows allows adding multiple users as file ownership. This means
these two can "own" the file on my S: drive. The second one
may have been assigned automatically by the system. Or, we can
"force it" of course. The green bar in File Explorer may be present
while a person belonging to the Administrator Group, receives
an Implicit Takeown by the OS, due to the level of elevation
that user possesses. A Limited User could not coerce the situation.

Linux can have several users "almost own" the same file. But it is an
added mechanism, not the original. It is done with ACLS.
--
Cheers, Carlos.
ES🇪🇸, EU🇪🇺;
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From Newsgroup: alt.os.linux

On Tue, 17 Mar 2026 22:11:46 +0100, Carlos E.R. wrote:

Linux can have several users "almost own" the same file. But it is
an added mechanism, not the original. It is done with ACLS.

Linux ACLs cannot convey ownership privileges on anybody besides the
actual file/directory owner. All they can do is offer finer-grained
control of the usual accesses (read, write, execute) to multiple
specified users and groups.
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From Newsgroup: alt.os.linux

On 17/03/2026 12.36, Jeff Gaines wrote:

I was having real problems seeing my HP Proliant Microserver on the
network so I had a break from it and have put Linux Mint xfce on an Asus 170-P box.

Did all the same things and lo and behold I can see it on the network, I have clearly done something wrong on the HP.

I have a 4 TB Iron wolf drive (ext4) in the HP box with my multimedia on
it, presumably all "owned" by "jeff".

All files are owned by an uid/gid (numeric values), then those are
matched to the user/group listed in /etc/passwd and /etc/group.

So when you create jeff on the Asus you have to see to that jeff gets
the same uid/gid as he had on the HP.

Don't forget that the directory you mount into need to have permissions
that allows jeff to access it.

If you decided to change the file owners, you can either use chown
directly, but that will change all files, which may not be the case
always, I would suggest to use find


find /mount/point -uid <the number of the HP user jeff> -exec chown
jeff:jeff {} \;

I'm assuming that the group is named jeff too, this will only change
owner of the files that are owned by jeff on the HP to the user jeff on
the Asus, but will leave all other files unchanged. This is a life saver
in case you would get the mount point wrong say for example you just set
it to root.

No you don't have to boot up the HP to see the uid, just do a ls -l it
will have a number instead of a name, as long as there isn't another
user on the Asus that has the same uid, in that case you will get their
user name and then you could use the option
-user <the HP jeff user name on the Asus>
instead of the
-uid <the number of the HP user jeff>
--
//Aho

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From Newsgroup: alt.os.linux

On Wed, 18 Mar 2026 08:36:27 +0100, J.O. Aho wrote:

So when you create jeff on the Asus you have to see to that jeff
gets the same uid/gid as he had on the HP.

There may be another way, if you don’t want to make a permanent change
to the owner IDs on the volume. I was looking through the mount(8) man
page <https://manpages.debian.org/mount(8)>, and discovered that a new filesystem-independent mount option has appeared at some point, called “X-mount.idmap”.
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From Newsgroup: alt.os.linux

On 18/03/2026 in message <n1v2vsFloj4U1@mid.individual.net> J.O. Aho wrote:

I'm assuming that the group is named jeff too, this will only change owner >of the files that are owned by jeff on the HP to the user jeff on the
Asus, but will leave all other files unchanged. This is a life saver in
case you would get the mount point wrong say for example you just set it
to root.

Can I ask a follow up?

I use JGGROUP on my Windows network, is there any benefit/disbenefit in setting up a JGGROUP on the Linux box and putting myself in it? I don't
know its relevance (if any).
--
Jeff Gaines Dorset UK
Most people have heard of Karl Marx the philosopher but few know of his
sister Onya the Olympic runner.
Her name is still mentioned at the start of every race.
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From Newsgroup: alt.os.linux

On 2026-03-18 08:43, Lawrence D’Oliveiro wrote:

On Wed, 18 Mar 2026 08:36:27 +0100, J.O. Aho wrote:

So when you create jeff on the Asus you have to see to that jeff
gets the same uid/gid as he had on the HP.

There may be another way, if you don’t want to make a permanent change
to the owner IDs on the volume. I was looking through the mount(8) man
page <https://manpages.debian.org/mount(8)>, and discovered that a new filesystem-independent mount option has appeared at some point, called “X-mount.idmap”.

Wow. :-o

I do not have all the options described in the web page, though.
--
Cheers, Carlos.
ES🇪🇸, EU🇪🇺;
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From Newsgroup: alt.os.linux

On 18/03/2026 08.43, Lawrence D’Oliveiro wrote:

On Wed, 18 Mar 2026 08:36:27 +0100, J.O. Aho wrote:

So when you create jeff on the Asus you have to see to that jeff
gets the same uid/gid as he had on the HP.

There may be another way, if you don’t want to make a permanent change
to the owner IDs on the volume. I was looking through the mount(8) man
page <https://manpages.debian.org/mount(8)>, and discovered that a new filesystem-independent mount option has appeared at some point, called “X-mount.idmap”.

Yeah, but still marked as experimental and may not be available in all
distros even if the man page may mention them. I did see those in the
man page earlier this morning, but didn't mentioned them, as there is
also mounting as user/group, I think this will in the long run replace
the file system specific options to mount as special uid/gid, as not all
has this feature today.
--
//Aho
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From Newsgroup: alt.os.linux

On 18/03/2026 09.44, Jeff Gaines wrote:

On 18/03/2026 in message <n1v2vsFloj4U1@mid.individual.net> J.O. Aho wrote:

I'm assuming that the group is named jeff too, this will only change
owner of the files that are owned by jeff on the HP to the user jeff
on the Asus, but will leave all other files unchanged. This is a life
saver in case you would get the mount point wrong say for example you
just set it to root.

Can I ask a follow up?

I use JGGROUP on my Windows network, is there any benefit/disbenefit in setting up a JGGROUP on  the Linux box and putting myself in it? I don't know its relevance (if any).

This more of a samba issue, but sure you may have easier discovery of
your linux shares by the ms-windows machines. As I noted in earlier
threads, I don't use samba and ms-windows nowadays supports NFS, so my
skills is quite limited on the samba stuff.
--
//Aho
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From Newsgroup: alt.os.linux

On Wed, 3/18/2026 4:44 AM, Jeff Gaines wrote:

On 18/03/2026 in message <n1v2vsFloj4U1@mid.individual.net> J.O. Aho wrote:

I'm assuming that the group is named jeff too, this will only change owner of the files that are owned by jeff on the HP to the user jeff on the Asus, but will leave all other files unchanged. This is a life saver in case you would get the mount point wrong say for example you just set it to root.

Can I ask a follow up?

I use JGGROUP on my Windows network, is there any benefit/disbenefit in setting up a JGGROUP on  the Linux box and putting myself in it? I don't know its relevance (if any).

Is this your idea of a workgroup ?
The canonical value is like this.

workgroup = WORKGROUP

On Windows 7, they had HomeGroups as well as SAMBA. For
some reason, in such cases, they used

workgroup = MSHOME

but that isn't particularly clever when trying to put
everything on the same workgroup. Some of the VMs Microsoft
offered for download, were set that way, and if at first
you could not "see" them, using sysdm.cpl and editing
the workgroup, could fix it.

*******

You can try the Arch article on SAMBA, it has a few ideas.
Maybe you need Avahi running.

https://wiki.archlinux.org/title/Samba

There are a number of nameservers. Apple uses Bonjour.
It's not necessarily the case, that a distro had no
nameserver, but maybe you don't recognize whatever
they are using.

Paul

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From Newsgroup: alt.os.linux

On 18/03/2026 in message <10petpb$4338$1@dont-email.me> Paul wrote:

On Wed, 3/18/2026 4:44 AM, Jeff Gaines wrote:

On 18/03/2026 in message <n1v2vsFloj4U1@mid.individual.net> J.O. Aho >>wrote:

I'm assuming that the group is named jeff too, this will only change owner >>>of the files that are owned by jeff on the HP to the user jeff on the >>>Asus, but will leave all other files unchanged. This is a life saver in >>>case you would get the mount point wrong say for example you just set it >>>to root.

Can I ask a follow up?

I use JGGROUP on my Windows network, is there any benefit/disbenefit in >>setting up a JGGROUP on  the Linux box and putting myself in it? I don't >>know its relevance (if any).

Is this your idea of a workgroup ?

If you mean JGGROUP then yes, I have always used that, all my computer
names begin with JG, my namespaces in Visual Studio begin with JG and my classes with J. Consistency is useful when it comes to maintenance.
--
Jeff Gaines Dorset UK
Captcha is thinking of stopping the use of pictures with traffic lights as cyclists don't know what they are.
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