Write Permissions To External Drive

gael33@gael33-Aspire-X3950 ~ $ sudo chown $USER:$USER /media/usb1
[sudo] password for gael33:
gael33@gael33-Aspire-X3950 ~ $ sudo chown $USER:$USER /media/usb1
chown: changing ownership of ‘/media/usb1’: Operation not permitted
gael33@gael33-Aspire-X3950 ~ $

Any idea why I cannot change permissions on my USB drive?
Any help would be appreciated.

Thanks

gael

Don't suppose someone can tell me exactly what to write in order to download and install PMS on Arch? I'm about to throw my computer out of the window.

First I tried:

Code:

sudo pacman -S plex-media-server-plexpass

And it cannot find anyting. I've only managed to find Plex Home Theatre using this method.

Next I tried:

Code:

sudo pacman -U https://downloads.plex.tv/plex-media-server/0.9.11.17.986-269b82b/plexmediaserver-0.9.11.17.986-269b82b.x86_64.rpm

Which resulted in an error stating:

Code:

error: failed retrieving file 'plexmediaserver-0.9.11.17.986-269b82b.x86_64.rpm.sig' from downloads.plex.tv : the requested URL returned error: 404
warning: failed to download https://downloads.plex.tv/plex-media-server/0.9.11.17.986-269b82b/plexmediaserver-0.9.11.17.986-269b82b.x86_64.rpm.sig
loading packages...
error: '/var/cache/pacman/pkg/plexmediaserver-0.9.11.17.986-269b82b.x86_64.rpm' : package missing required signature.

I mean, what am I doing wrong? Can someone please tell me exactly what to type in to download and install PMS?

Cheers

System Info:

I have normal user in CentOS 7 whose name is "mostafa" (the name of the account).

I naturally have another user called root with all privileges. User "mostafa" is put into sudoers file, too.

The OS is installed in VmWare, so the system is all mine.

Problem:

Now I create a file with touch file.sh and put a command in it, but when I want to run it with Code:

sudo ./file.sh

, an error is shown that the command Code:

./file.sh

does not exist. But if I Code:

 sudo chmod 777 ./file.sh

then it gets run. My question is that, why should I use Code:

chmod 777

when I myself have created the file, and I am in sudoers.

Can anyone explain me why shuold I still use Code:

sudo chmod 777

when the creator of the file is me.

error occured while mounting /media/sdb1.
Press S to skip mounting or M for manual recovery.

this comes up every time i boot.

and after cat/etc/fstab this comes up:

/dev/sdb1 /media/sdb1 vfat uid=users,users 0 0
/dev/sdb2 /media/sdb2 hfsplus defaults 0 0
/dev/sdb1 /media/sdb1 ext4 defaults 0 0

remnants from usb sticks and an external HD that are no connected.

tried to remove the mountpoints with sudo rmdir /media/sdb1, but no help.
I am newbie and I mean NEWbie. Can someone head me in the right direction?

I can't seem to mount a CD-R or DVD-R, doesn't matter if it is blank or not.
However, when I use a program such as Brasero, I am able to write to them. I cannot use dd to write to them.

This is the output of trying to mount/unmount.
Code:

root@delarocha-> mount /dev/sr0 /media/cd
mount: /dev/sr0 is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/sr0,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail or so.

root@delarocha-> umount /dev/sr0
umount: /dev/sr0: not mounted
root@delarocha-> umount /media/cd
umount: /media/cd: not mounted
root@delarocha-> umount /media/cdrom
umount: /media/cdrom: not mounted

dmesg | tail
Code:

root@delarocha-> dmesg | tail
[ 1536.299777] sr 1:0:0:0: [sr0]  
[ 1536.299804] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 1536.299809] sr 1:0:0:0: [sr0]  
[ 1536.299814] Sense Key : Illegal Request [current] 
[ 1536.299820] sr 1:0:0:0: [sr0]  
[ 1536.299824] Add. Sense: Logical block address out of range
[ 1536.299829] sr 1:0:0:0: [sr0] CDB: 
[ 1536.299832] Read(10): 28 00 00 00 00 00 00 00 01 00
[ 1536.299846] end_request: I/O error, dev sr0, sector 0
[ 1536.299915] EXT4-fs (sr0): unable to read superblock

I don't think it can be anything wrong with the disk, since it is a untouched disk.
Note: The results of everything(apart from dmesg I would assume), are the same for a CD-R and DVD-R

This is what I get while trying to dd a .iso and .mp4, respectively.

Code:

web@delarocha-> dd if=/dev/sr0 of=~/Downloads/xubuntu-14.04.1-desktop-amd64.iso
0+0 records in
0+0 records out
0 bytes (0 B) copied, 0.000377316 s, 0.0 kB/s

Code:

web@delarocha-> dd if=/dev/sr0 of=~/Videos/The\ Hobbit/The\ Hobbit\ The\ Desolation\ of\ Smaug.mp4
0+0 records in
0+0 records out
0 bytes (0 B) copied, 0.000377179 s, 0.0 kB/s

uname -a
Code:

Linux delarocha 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt2-1 (2014-12-08) x86_64 GNU/Linux

When I used lsblk when I close the disk tray, it shows it mounted.
Code:

sr0                     11:0    1     2K  0 rom

But after I use the dd command to write the .iso, it disappears.

Here is my /etc/fstab
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>
/dev/mapper/delarocha-root /               ext4    errors=remount-ro 0       1
# /boot was on /dev/sda1 during installation
UUID=5bbedec0-6e3d-4185-91e0-292a72585908 /boot           ext2    defaults        0       2
/dev/mapper/delarocha-swap_1 none            swap    sw              0       0
/dev/sr0        /media/cdrom0   udf,iso9660 user,noauto     0       0
/dev/sdb1       /media/usb0     auto    rw,user,noauto  0       0

I have also tried replacing /dev/sr0 in the above commands with /media/cdrom0.

Hello,

I am getting the follwoing error for Red Hat Enterprise Linux Server release 6.6

sudo su -
sudo: >>> /etc/sudoers: syntax error near line 118 <<<
sudo: parse error in /etc/sudoers near line 118
sudo: no valid sudoers sources found, quitting
sudo: unable to initialize policy plugin

cd /etc/sudoers.d/
-bash: cd: /etc/sudoers.d/: Permission denied

Could you help me to figure it out. As a root user am able to access but as normal user it is not allowing to sudo su - command.

vi /etc/sudoers.d/access
username ALL=(ALL) NOPASSWD: ALL

Please let me know if any additional formation required.

I have a Toshiba Laptop that had a Dual Boot of Windows 7 and Linux Mint 17 on it and both OS's worked fine. I've been wanting to use CentOS 7 as my primary OS so that I can become more familar with RPM management and proceeded to remove my Mint installation and replace it with the CENTOS 7 installation, and the install completed successfully. HOWEVER, here's my problem.....

When my laptop starts up, I don't see GRUB nor do I have any option of selecting whether to run Windows or CentOS. It automatically loads up Centos 7. When I do a 'sudo fdisk -l', I can see that SDA1 is an NTFS drive, and when I try the following 'sudo mount /dev/sda1 /media/Main\ Drive' I get an error message saying that I can't mount an NTFS drive.

Am I missing something or is there a way to access my Windows files from within Centos. I was able to do this with Mint without an issue, but unable to see any of my windows drives because I can't mount an NTFS drive.

I have no problem with keeping CENTOS as my only OS on this laptop, however, I do need to access the files from the Window's partition, and if anyone can help me to access my files, that would be totally awesome.

Thank you in advance for reading through this and for any help offered.....

Mikey

I am toying around with a LFS system and I am suddenly having trouble with sudo not finding binaries in the standard superuser only binary dirs (/sbin /usr/sbin). I am using sudo version 1.8.10p3. The sudoers file parses correctly and I did not modify except to allow users in the wheel group to be able use sudo to call any command. So I imaging something is wrong with the $PATH variable but I am not sure on what it is.

My father passed away about 6 months ago and I'm just getting around to going threw all 18 hard drives... I have been using Ubuntu 14.04 for over a year now and while I'm not a pro I can handle most things.

One drive has LVM on it. I have attached it via a USB2.0 to SATA cable. I followed the instructions he http://linuxers.org/howto/how-mount-...rtitions-linux

Code:

michael [ ~ ]$ sudo fdisk -l
[sudo] password for michael: 

Disk /dev/sda: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x38431b10

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048  1464322047   732160000    7  HPFS/NTFS/exFAT
/dev/sda2      1464322048  2930272255   732975104    7  HPFS/NTFS/exFAT

Disk /dev/sdb: 256.1 GB, 256060514304 bytes
255 heads, 63 sectors/track, 31130 cylinders, total 500118192 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000656a3

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048    33560575    16779264   82  Linux swap / Solaris
/dev/sdb2   *    33560576    75505663    20972544   83  Linux
/dev/sdb3        75505664   500117503   212305920   83  Linux

Disk /dev/sdc: 750.2 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000da346

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1   *        2048      499711      248832   83  Linux
/dev/sdc2          501758  1465147391   732322817    5  Extended
/dev/sdc5          501760  1465147391   732322816   8e  Linux LVM
michael [ ~ ]$ sudo pvs
  PV         VG         Fmt  Attr PSize   PFree
  /dev/sdc5  ubuntu1-vg lvm2 a--  698.39g    0 
michael [ ~ ]$ sudo lvdisplay /dev/ubuntu1-vg
  --- Logical volume ---
  LV Path                /dev/ubuntu1-vg/root
  LV Name                root
  VG Name                ubuntu1-vg
  LV UUID                StErnb-Mtop-NaEy-faw4-wNk0-bY5I-6ARBmI
  LV Write Access        read/write
  LV Creation host, time ubuntu1, 2014-08-12 18:45:21 +0900
  LV Status              NOT available
  LV Size                694.39 GiB
  Current LE             177765
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
   
  --- Logical volume ---
  LV Path                /dev/ubuntu1-vg/swap_1
  LV Name                swap_1
  VG Name                ubuntu1-vg
  LV UUID                62DxMC-qLAo-6cU9-kA5H-kNoL-7B4t-1ZCQcK
  LV Write Access        read/write
  LV Creation host, time ubuntu1, 2014-08-12 18:45:21 +0900
  LV Status              NOT available
  LV Size                4.00 GiB
  Current LE             1024
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
   
michael [ ~ ]$ mount /dev/ubuntu1-vg/root /mnt
mount: only root can do that
michael [ ~ ]$ sudo mount /dev/ubuntu1-vg/root /mnt
mount: special device /dev/ubuntu1-vg/root does not exist

So where did I go wrong?

I tried adding two users in apache group and given 775 permission to Document root but user is not able to write into files in DocumentRoot

Tried adding user and DocumentRoot Folder in sudo file but not able to do it recursively

please help


Thanks for reply,
I have already given chmod 775 -R DocumentRoot - for recursively writting permission
You have told to add user in www-data group and chmod 775 -R to DocumentRoot
usermod -a -G www-data <user1>

How can users in www-data can able to write in DocumentRoot which has apache:apache owner and group
please clarify...

Done below steps to solve this:
1) I have created a new group webdata and added required users in this group
2) set sticky bit to document root with below command
setfacl -m g:webdata:rwx -R /path/to/documentroot/
this command will set rwx permission to DocumentRoot so that members in webdata can have full access but still DocumentRoot user and group will be apache