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Thread: Owner and rights for hdd

  1. #1
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    Owner and rights for hdd

    I had a external USB-disk, that I have problem with. Probably the USB-SATA-interface...

    But anyway, I formatted another USB-disk to ext4. I think it asked if I sould take ownership of the file system and I say yes. Now I put in the disk in the computer with SATA and have mounted it with fstab in /home/Azyx/1500GB.

    Is that a good idea?

    I have also another 500GB disk mounted in /home/Azyx/500GB

    when I ls -all i get;
    ....
    Code:
    drwx------ 10 Azyx    Azyx      4096 apr 12 14:15 1500GB
    drwxrwxrwx 22 Azyx    root 593920 apr 13 13:51 500GB
    ....

    How do I change the right so they get as the 500GB? No I need to change ownership more that in the mount-folder? fore instance owner ship of the hdd och the filesystem.
    Last edited by Azyx; April 16th, 2013 at 03:54 PM.
    /Azyx

    Ubuntu 16.04LTS 64bit, 16.04 Lubuntu 32-bit on eeePCs and OSX on a G4 800MHz iMac (iLamp). I think I have an W7 on one of my Virtualbox machine under 16.04LTS?

  2. #2
    prodigy_ is offline May the Ubuntu Be With You!
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    Re: Owner and rights for hdd

    For native file systems you need to change actual permissions. The easy way:
    Code:
     chmod -R 777 /home/Azyx/1500GB
    However this will mark all files as executable. A cleaner way would be:
    Code:
    find /home/Azyx/1500GB -type -d -exec chmod 777 '{}' \;
    find /home/Azyx/1500GB -type -f -exec chmod 666 '{}' \;
    Since these commands change permissions recursively, you should be careful with them. And since rw for everyone isn't really secure, you want to be careful with what you put on that drive.
    Last edited by prodigy_; April 13th, 2013 at 02:36 PM.

  3. #3
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    Re: Owner and rights for hdd

    I recently learned something - see post #8 & 10 by morbius1. Seems like a better way as you have more control over what is executable. Change example /mnt/data to your data partition(s).
    http://ubuntuforums.org/showthread.php?t=1795369
    sudo chmod -R a+rwX /mnt/data
    #is better than this:
    sudo chmod 775 /mnt/data
    sudo chown $USER:$USER /mnt/data
    #where $USER should be your login name


    chmod -R a+rwX,o-w /mnt/data
    # Note that the -R is recursion and everything is changed, do NOT run on any system partitions.
    #All directories will be 775.
    #All files will be 664 except those that were set as executable to begin with.
    sudo chown $USER:$USER /mnt/data
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  4. #4
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    Re: Owner and rights for hdd

    It is only storage for media and other files I have on the disk. Now it is like this:

    Code:
    drwxrwxrwx 10 Azyx    Azyx      4096 apr 12 14:15 1500GB
    drwxrwxrwx 22 Azyx    root 593920 apr 13 13:51 500GB
    As you may see, the other disk is owned by the group root, and it work well. But then I samba-share the folder 1500GB it's goes really slow to write and read and system load get hight.

    My fstab lookes like this.

    Code:
    # /etc/fstab: static file system information.
    #
    # Use 'blkid' to print the universally unique identifier for a
    # device; this may be used with UUID= as a more robust way to name devices
    # that works even if disks are added and removed. See fstab(5).
    #
    # <file system> <mount point>   <type>  <options>       <dump>  <pass>
    proc            /proc           proc    nodev,noexec,nosuid 0       0
    # / was on /dev/sdb2 during installation
    UUID=d85c5374-17d7-4482-99c7-24ef41d31c35 /               ext4    errors=remount-ro 0       1
    # /home was on /dev/sdb4 during installation
    UUID=f73abdd8-e708-4a95-87f2-c2eb160dbc29 /home           ext4    defaults        0       2
    # swap was on /dev/sdb3 during installation
    UUID=aee6a155-4b79-40c4-b59c-c615556b4cf7 none            swap    sw              0       0
    #500GB-disken
    UUID=5352c56f-108c-4a55-a351-fbfd1de72c00 /home/Azyx/500GB ext4 defaults   0       0
    #1500GB-disken
    UUID=78610a00-6b42-407b-b1d5-0d484fc12514 /home/Azyx/1500GB ext4 defaults  0       0
    I have a weak memory of that you should let the filesystem, some were be owned by root, but can not remember how...
    /Azyx

    Ubuntu 16.04LTS 64bit, 16.04 Lubuntu 32-bit on eeePCs and OSX on a G4 800MHz iMac (iLamp). I think I have an W7 on one of my Virtualbox machine under 16.04LTS?

  5. #5
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    Re: Owner and rights for hdd

    chmod is permissions and chown is ownership.

    sudo chown $USER:$USER /mnt/data
    Where $USER is the your the user otherwise if you want someone else you have to use name of that user.
    fred@fred-Precise:~$ echo $USER
    fred
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  6. #6
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    Re: Owner and rights for hdd

    Quote Originally Posted by oldfred View Post
    chmod is permissions and chown is ownership.

    sudo chown $USER:$USER /mnt/data
    Where $USER is the your the user otherwise if you want someone else you have to use name of that user.
    fred@fred-Precise:~$ echo $USER
    fred
    No, no other user, but there is something wrong because copying stop and take a lot of time if i share the folder. I don't have anything in /mnt

    But in /dev

    Code:
    Azyx@Blackus:/dev$ ls -all sd*
    brw-rw---- 1 root disk 8,  0 apr 16 15:02 sda
    brw-rw---- 1 root disk 8,  1 apr 16 15:02 sda1
    brw-rw---- 1 root disk 8,  2 apr 16 15:02 sda2
    brw-rw---- 1 root disk 8,  3 apr 16 15:02 sda3
    brw-rw---- 1 root disk 8,  4 apr 16 15:02 sda4
    brw-rw---- 1 root disk 8,  6 apr 16 15:02 sda6
    brw-rw---- 1 root disk 8, 16 apr 16 15:02 sdb
    brw-rw---- 1 root disk 8, 17 apr 16 15:02 sdb1
    brw-rw---- 1 root disk 8, 32 apr 16 15:02 sdc
    brw-rw---- 1 root disk 8, 33 apr 16 15:02 sdc1
    brw-rw---- 1 root disk 8, 34 apr 16 15:02 sdc2
    brw-rw---- 1 root disk 8, 48 apr 16 15:02 sdd
    brw-rw---- 1 root disk 8, 64 apr 16 15:02 sde
    brw-rw---- 1 root disk 8, 80 apr 16 15:02 sdf
    brw-rw---- 1 root disk 8, 96 apr 16 15:02 sdg
    a@Blackus:/dev$
    never seen the group 'disk' before...
    /Azyx

    Ubuntu 16.04LTS 64bit, 16.04 Lubuntu 32-bit on eeePCs and OSX on a G4 800MHz iMac (iLamp). I think I have an W7 on one of my Virtualbox machine under 16.04LTS?

  7. #7
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    Re: Owner and rights for hdd

    There are many other users and groups than / (root) that many are system related. Do not attempt to change them or the only fix will be a reinstall.

    Only your /home or only your data partitions should have your user as owner.

    Code:
    sudo cat /etc/group
    
    root:x:0:
    daemon:x:1:
    bin:x:2:
    sys:x:3:
    adm:x:4:fred
    tty:x:5:
    disk:x:6:
    lp:x:7:
    mail:x:8:
    news:x:9:
    uucp:x:10:
    man:x:12:
    proxy:x:13:
    kmem:x:15:
    dialout:x:20:fred
    fax:x:21:fred
    voice:x:22:
    cdrom:x:24:fred
    floppy:x:25:fred
    tape:x:26:fred
    sudo:x:27:
    audio:x:29:pulse,fred
    dip:x:30:fred
    www-data:x:33:
    backup:x:34:
    operator:x:37:
    list:x:38:
    irc:x:39:
    src:x:40:
    gnats:x:41:
    shadow:x:42:
    utmp:x:43:
    video:x:44:fred
    sasl:x:45:
    plugdev:x:46:fred
    staff:x:50:
    games:x:60:
    users:x:100:
    nogroup:x:65534:
    libuuid:x:101:
    crontab:x:102:
    syslog:x:103:
    fuse:x:104:fred
    colord:x:105:
    scanner:x:106:colord,fred
    messagebus:x:107:
    lightdm:x:108:
    nopasswdlogin:x:109:
    mlocate:x:110:
    ssh:x:111:
    avahi-autoipd:x:112:
    avahi:x:113:
    netdev:x:114:fred
    bluetooth:x:115:
    lpadmin:x:116:fred
    ssl-cert:x:117:
    admin:x:118:fred
    pulse:x:119:
    pulse-access:x:120:
    utempter:x:121:
    rtkit:x:122:
    saned:x:123:
    fred:x:1000:
    sambashare:x:124:fred
    whoopsie:x:125:
    winbindd_priv:x:126:
    haldaemon:x:127:
    powerdev:x:128:
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

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