How to use chgrp and chown for a directory ?

[pankajit09]

Hello,

Howto change the group and owner of a directory .

I am doing this -->

chgrp -R groupname directoryname

but its not working .

[sicarie]

Hello,

Howto change the group and owner of a directory .

I am doing this -->

chgrp -R groupname directoryname

but its not working .

chgrp is not the command you need, it is chown.

You can always 'man *command*' to see what they do and how they are supposed to work.

[drhowarddrfine]

He wants to do both. What he's doing should change the group owner so I'm assuming he doesn't have permission to do so. Are you getting an error?

[cassbiz]

the chown command is

chown user.group file
 

if you want to change the directory name then replace file with the name of the directory.

[pankajit09]

Actually I have mounted Windows partition on Debian.

The filesystem is ntfs.

When I enter the mount command it shows read/write.

But when I fire the message which comes is that its a read only file system.

chown pankaj.pankaj /mnt/win/
chown: changing ownership of `/mnt/win/': Read-only file system

The above message tells that the ownership has been changed but actually its not been changed.

[sicarie]

Actually I have mounted Windows partition on Debian.

The filesystem is ntfs.

When I enter the mount command it shows read/write.

But when I fire the message which comes is that its a read only file system.

chown pankaj.pankaj /mnt/win/
chown: changing ownership of `/mnt/win/': Read-only file system

The above message tells that the ownership has been changed but actually its not been changed.

What command did you use to mount the fs?

[pankajit09]

What command did you use to mount the fs?

I first did this and the fs was mounted -->

mount -t ntfs /dev/hda1 /mnt/win

Then I made the following entry in the fstab -->

 /dev/hda1 /mnt/win ntfs noauto,user 0 0

[cybervegan]

What you need to do is chown the directory *before* you mount the filesystem on it. NTFS filesystems don't support *Linux* file permissions and ownerships, so you can't use chown on the files within them (they get their ownership from the directory on which the fs is mounted).

Unmount the filesystem, and then do:

ls -l /mnt

this will show you the owner and group that are assigned to all the mount points inside /mnt. You can then use chown to set the ownership, and chmod to set the permissions as you desire. Then mount the filesystem, and it should work.

hth,
-cybervegan (RHCT)

[pankajit09]

What you need to do is chown the directory *before* you mount the filesystem on it. NTFS filesystems don't support *Linux* file permissions and ownerships, so you can't use chown on the files within them (they get their ownership from the directory on which the fs is mounted).

Unmount the filesystem, and then do:

ls -l /mnt

this will show you the owner and group that are assigned to all the mount points inside /mnt. You can then use chown to set the ownership, and chmod to set the permissions as you desire. Then mount the filesystem, and it should work.

hth,
-cybervegan (RHCT)

I did that but whenever I mount the owner and group automatically change to root.

[cybervegan]

Ah, you need to add to your mount command:

-o uid=username gid=groupname

(Replace username and groupname with appropriate real user and group names)


You may also want to use the umask= option too. See the linux man page for mount for more details (there's a section for each filesystem type, search for ntfs by typing '/ntfs').

If you want this configured permanently, you need to add an entry to your system's /etc/fstab file with the parameters you give the mount command, again, man fstab for the details.

hth,
-cybervegan

[drhowarddrfine]

Is 'mount_ntfs' available on Linux?

[pankajit09]

Is 'mount_ntfs' available on Linux?

What do you mean by that ?

[pankajit09]

Ah, you need to add to your mount command:

-o uid=username gid=groupname

(Replace username and groupname with appropriate real user and group names)


You may also want to use the umask= option too. See the linux man page for mount for more details (there's a section for each filesystem type, search for ntfs by typing '/ntfs').

If you want this configured permanently, you need to add an entry to your system's /etc/fstab file with the parameters you give the mount command, again, man fstab for the details.

hth,
-cybervegan

When I fire the mount command I get this -->

/dev/hda1 on /mnt/win type ntfs (rw,uid=1000,gid=1000)

My /etc/fstab file has entry like this -->

/dev/hda1 /mnt/win ntfs ro,defaults,user,umask=0222 0 0

Is everything fine ?

[cybervegan]

When I fire the mount command I get this -->

/dev/hda1 on /mnt/win type ntfs (rw,uid=1000,gid=1000)

My /etc/fstab file has entry like this -->

/dev/hda1 /mnt/win ntfs ro,defaults,user,umask=0222 0 0

Is everything fine ?

Sorry for the delay in responding!

Adding the "user" flag allows ordinary users to mount the device. I'd add gid=grpno too (where grpno is the numeric group number of a group that you want to allow to use /mnt/win - and add all users who should be able to access the windows partition into the relevant group).

hth,
-cybevegan

[drhowarddrfine]

What do you mean by that ?

I mean is the "mount_ntfs" command/script available on Linux?

[arthurzzk]

chown -R user_Name:user_Name directory_Name
chgrp -R user_Name directory_Name

[pankajit09]

I mean is the "mount_ntfs" command/script available on Linux?

I don't think becoz when I entered "man mount_ntfs" no result.

[pankajit09]

chown -R user_Name:user_Name directory_Name
chgrp -R user_Name directory_Name

I think this should be correct -->

chown -R owner_name directory_Name
chgrp -R group_name directory_Name

[pankajit09]

Sorry for the delay in responding!

Adding the "user" flag allows ordinary users to mount the device. I'd add gid=grpno too (where grpno is the numeric group number of a group that you want to allow to use /mnt/win - and add all users who should be able to access the windows partition into the relevant group).

hth,
-cybevegan

So is this correct -->

/dev/hda1 /mnt/win ntfs ro,defaults,user,umask=0222,gid=1000 0 0

How to include all the users ?

[cybervegan]

So is this correct -->

/dev/hda1 /mnt/win ntfs ro,defaults,user,umask=0222,gid=1000 0 0

How to include all the users ?

It works like this:
groupadd winusers
usermod -G winusers fredb
usermod -G winusers bills
usermod -G winusers mayf

hth,
-cybervegan

[arthurzzk]

I think this should be correct -->

chown -R owner_name directory_Name
chgrp -R group_name directory_Name

chown -R owner_name:group_name directory_Name