Recent Questions

I don't know why I am getting this error when I am calling zim from the command line.

link to the documentation for using command line options

For example

zim --help 

I use Windows 10 on desktop and I am looking for window manager doing one particular task: save size and position of each application window and restore them when the application is launched again. For instance, I sometimes change the size and position of my text editor, but I usually want it to open exactly on the same place and the same size that it had before last closing.

Snapping windows to a grid is nice to have, but not necessary. AquaSnap is not an option, because it can manipulate the existing windows but does not remember the position of closed ones.

I am planning to create a custom distro based on Ubuntu which will be free but I want to keep it closed source and only accept donations so is it possible to do so legally? If yes are there any licenses that I can use for free with my distro?

Please help me understand this whole thing about loose and strict source routing

Source routing can be used with with Traceroute.

The idea is to specify what is called a Loose Source Route, which specifies a system through which the packets should pass through before proceeding on to their destination.

Unfortunately, source routing has a great potential for abuse, and therefore most network administrators block all source-routed packets at their border routers.

So, in practice, Loose Source Routes aren't going to work.

Out of curiosity, I ran GNU ddrescue on a Seagate ST1000LM024 HN-M101MBB hard drive with known bad sectors, and then I visualized the ddrescue mapfile with ddrescueview.

When I zoomed in, this interesting patte appeared:

The green gaps (contiguous good sectors) are often 2440 logical sectors (1249280 bytes) large, and the red sections (bad and probably physically damaged sectors) are almost always 1 physical sector (4 logical sectors, 4096 bytes) large.

Keeping this patte in mind, I did a calculation to estimate how many sectors would be on the track. The hard drive spins at 5400 rotations per minute, the sustained read rate at that part of the drive is about 109 mebibytes per second (I tested this on a drive of the same model with no bad sectors), one track goes around 360 degrees, and a logical sector is 512 bytes.

((109MiB/s / 5400rpm * 360 degrees) / 512 bytes) = 2480

The estimation shows that there are about 2480 logical sectors in the affected track. The patte happens every 2444 logical sectors.

This suggests that the physical damage looks like a very thin strip heading inwards practically tangent to the circle of the platter. The thin strip fits in an arc less than 0.001639°. This damage, whatever it is, appears to be a microscopic gash.

There are other characteristics of the patte that I can't quite make sense of.

• The bad sectors only exist in the first ¹/₆ of the drive, the outer edges, with no clear patte of where the bands of pattes appear.
• The pattes don't appear to be one long gash; they're more like a dotted/dashed line ("┋"):

Why would damage appear like this? What could create such an orderly damage patte?

S.M.A.R.T.

# smartctl -a /dev/sdf
smartctl 6.4 2014-10-07 r4002 [x86_64-linux-4.3.0-0.bpo.1-amd64] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Seagate Momentus SpinPoint M8 (AF)
Device Model: ST1000LM024 HN-M101MBB
Serial Number: S314J90G121745
LU WWN Device Id: 5 0004cf 20f07d081
Firmware Version: 2BA30003
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Form Factor: 2.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS T13/1699-D revision 6
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Sat Mar 19 10:02:27 2016 CDT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x00) Offline data collection activity was never started. Auto Offline Data Collection: Disabled.
Self-test execution status: ( 121) The previous self-test completed having the read element of the test failed.
Total time to complete Offline
data collection: (12480) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. No Conveyance Self-test supported. Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering power-saving mode. Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported. General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 208) minutes.
SCT capabilities: (0x003f) SCT Status supported. SCT Error Recovery Control supported. SCT Feature Control supported. SCT Data Table supported.
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x002f 100 100 051 Pre-fail Always - 118722 2 Throughput_Performance 0x0026 252 252 000 Old_age Always - 0 3 Spin_Up_Time 0x0023 092 092 025 Pre-fail Always - 2494 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 96 5 Reallocated_Sector_Ct 0x0033 252 252 010 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 252 252 051 Old_age Always - 0 8 Seek_Time_Performance 0x0024 252 252 015 Old_age Offline - 0 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 4188 10 Spin_Retry_Count 0x0032 252 252 051 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 21 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 102 13 Read_Soft_Error_Rate 0x003a 100 100 000 Old_age Always - 0
181 Program_Fail_Cnt_Total 0x0022 100 100 000 Old_age Always - 655675
191 G-Sense_Error_Rate 0x0022 100 100 000 Old_age Always - 56
192 Power-Off_Retract_Count 0x0022 100 100 000 Old_age Always - 25
193 Load_Cycle_Count 0x0032 089 089 000 Old_age Always - 111986
194 Temperature_Celsius 0x0002 058 050 000 Old_age Always - 42 (Min/Max 14/50)
195 Hardware_ECC_Recovered 0x003a 100 100 000 Old_age Always - 0
196 Reallocated_Event_Count 0x0032 252 252 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 037 037 000 Old_age Always - 10437
198 Offline_Uncorrectable 0x0030 252 252 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0036 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x002a 100 100 000 Old_age Always - 3688
240 Head_Flying_Hours 0x0032 100 100 000 Old_age Always - 4186
241 Total_LBAs_Written 0x0032 097 094 000 Old_age Always - 4770327
242 Total_LBAs_Read 0x0032 096 094 000 Old_age Always - 5931956
254 Free_Fall_Sensor 0x0032 252 252 000 Old_age Always - 0
SMART Error Log Version: 1
Waing: ATA error count 13458 inconsistent with error log pointer 4
ATA Error Count: 13458 (device log contains only the most recent five errors) CR = Command Register [HEX] FR = Features Register [HEX] SC = Sector Count Register [HEX] SN = Sector Number Register [HEX] CL = Cylinder Low Register [HEX] CH = Cylinder High Register [HEX] DH = Device/Head Register [HEX] DC = Device Command Register [HEX] ER = Error register [HEX] ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.
Error 13458 occurred at disk power-on lifetime: 4188 hours (174 days + 12 hours) When the command that caused the error occurred, the device was active or idle. After command completion occurred, registers were: ER ST SC SN CL CH DH -- -- -- -- -- -- -- 40 51 08 28 ec cb e2 Error: UNC 8 sectors at LBA = 0x02cbec28 = 46918696 Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- c8 00 08 28 ec cb e2 08 00:02:49.684 READ DMA b0 d5 01 00 4f c2 00 08 00:02:49.684 SMART READ LOG ef 10 02 00 00 00 a0 08 00:02:49.684 SET FEATURES [Enable SATA feature] 27 00 00 00 00 00 e0 08 00:02:49.684 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3] ec 00 00 00 00 00 a0 08 00:02:49.684 IDENTIFY DEVICE
Error 13457 occurred at disk power-on lifetime: 4188 hours (174 days + 12 hours) When the command that caused the error occurred, the device was active or idle. After command completion occurred, registers were: ER ST SC SN CL CH DH -- -- -- -- -- -- -- 40 51 08 28 ec cb e2 Error: UNC 8 sectors at LBA = 0x02cbec28 = 46918696 Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- c8 00 08 28 ec cb e2 08 00:02:49.681 READ DMA b0 da 00 00 4f c2 00 08 00:02:49.681 SMART RETURN STATUS ef 10 02 00 00 00 a0 08 00:02:49.681 SET FEATURES [Enable SATA feature] 27 00 00 00 00 00 e0 08 00:02:49.681 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3] ec 00 00 00 00 00 a0 08 00:02:49.681 IDENTIFY DEVICE
Error 13456 occurred at disk power-on lifetime: 4188 hours (174 days + 12 hours) When the command that caused the error occurred, the device was active or idle. After command completion occurred, registers were: ER ST SC SN CL CH DH -- -- -- -- -- -- -- 40 51 08 28 ec cb e2 Error: UNC 8 sectors at LBA = 0x02cbec28 = 46918696 Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- c8 00 08 28 ec cb e2 08 00:02:49.677 READ DMA b0 d1 01 01 4f c2 00 08 00:02:49.677 SMART READ ATTRIBUTE THRESHOLDS [OBS-4] ef 10 02 00 00 00 a0 08 00:02:49.677 SET FEATURES [Enable SATA feature] 27 00 00 00 00 00 e0 08 00:02:49.677 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3] ec 00 00 00 00 00 a0 08 00:02:49.677 IDENTIFY DEVICE
Error 13455 occurred at disk power-on lifetime: 4188 hours (174 days + 12 hours) When the command that caused the error occurred, the device was active or idle. After command completion occurred, registers were: ER ST SC SN CL CH DH -- -- -- -- -- -- -- 40 51 08 28 ec cb e2 Error: UNC 8 sectors at LBA = 0x02cbec28 = 46918696 Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- c8 00 08 28 ec cb e2 08 00:02:49.674 READ DMA b0 d0 01 00 4f c2 00 08 00:02:49.674 SMART READ DATA ef 10 02 00 00 00 a0 08 00:02:49.674 SET FEATURES [Enable SATA feature] 27 00 00 00 00 00 e0 08 00:02:49.674 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3] ec 00 00 00 00 00 a0 08 00:02:49.674 IDENTIFY DEVICE
Error 13454 occurred at disk power-on lifetime: 4188 hours (174 days + 12 hours) When the command that caused the error occurred, the device was active or idle. After command completion occurred, registers were: ER ST SC SN CL CH DH -- -- -- -- -- -- -- 40 51 08 28 ec cb e2 Error: UNC 8 sectors at LBA = 0x02cbec28 = 46918696 Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- c8 00 08 28 ec cb e2 08 00:02:49.670 READ DMA ec 00 01 00 00 00 00 08 00:02:49.670 IDENTIFY DEVICE ef 10 02 00 00 00 a0 08 00:02:49.670 SET FEATURES [Enable SATA feature] 27 00 00 00 00 00 e0 08 00:02:49.670 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3] ec 00 00 00 00 00 a0 08 00:02:49.670 IDENTIFY DEVICE
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Short offline Completed: read failure 90% 4101 933752
# 2 Short offline Completed: read failure 90% 4101 933752
# 3 Short offline Completed: read failure 90% 4101 1417744
# 4 Short offline Completed without error 00% 3607 -
# 5 Short offline Completed without error 00% 3002 -
# 6 Short offline Completed without error 00% 2338 -
# 7 Short offline Completed without error 00% 1044 -
# 8 Short offline Completed without error 00% 334 -
# 9 Short offline Completed without error 00% 0 -
SMART Selective self-test log data structure revision number 0
Note: revision number not 1 implies that no selective self-test has ever been run SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS 1 0 0 Completed_read_failure [90% left] (0-65535) 2 0 0 Not_testing 3 0 0 Not_testing 4 0 0 Not_testing 5 0 0 Not_testing
Selective self-test flags (0x0): After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.

ddrescueview Gallery

Low Resolution

High Resolution

This is what I know:

text-mode 80x25 characters. I need to put character 'B' on column 8, row 5. What's the formula to know this answer?

EDIT:

How would I do this for graphical mode? For example:

resolution of 1024x768

yellow pixel on (123,456)

http://stackoverflow.com/questions/36011878/howto-edit-source-code-virtualbox-5-0-16-so-that-high-resolution-virtual-desktop

Using VirtualBox 5.0.16 and WinXP, my computer (1280x800p) can have 3840x1024p virtual desktop. But the virtual desktop is with scrollbar vertical and horizontal.

What I want is: No problem with those scroll bar, but it would be very nice to have virtual desktop that can automatically scroll to the right when my mouse go to the right perimeter (and all direction right, left, up and down).

Anyone know what code to be revised in the VirtualBox Source Code? (what is the filename, where, and what is the code)

Unless you tell it to wipe or repartition your other partitions, they will be left intact. However, now is the time to make sure you have a backup of this data. If you mess up the installation, you may accidentally ask Windows to erase the data and then you'll be thankful for the backups.

I'd like to use borg as a backup solution. I only like to back up home directory, so I run borg as non privileged user. Which rights do I need to assign to the borg repository to make it work?

DISCLAIMER: I'm not a computer-genius by any means.

I recently installed SteamOS on a disk partition in the hopes of trying to dual boot it with Windows 10, only to find out that even following the steps for a dual boot guide, my Win10 boot loader had been deleted. I then deleted the SteamOS/Linux partition from a USB recovery using diskpart in the command prompt. I then used the same commandprompt to type

bcdboot.exe H:Windows H:

to use my Windows installation on the H:-drive. The boot is working as long as I use the boot menu when starting up, otherwise it just goes into grub-rescue, which I'm not interested in doing. My question is now: How do I boot from the H:-drive installation as default? Alteatively, how do I stop my computer from going into grub rescue?

To help with ssh security on my centos7 server, I am trying to install google authenticator. Problem is, the guides I have found all say to do as a first step:

sudo yum install google-authenticator

However, I get a message that google-authenticator isn't available.

Do I need to point this to a certain repo? If so, how do I do that? (I'm a bit new to doing sysadmin-style work on CentOS7.

When doing some research, I found this out: https://www.howtoforge.com/tutorial/secure-ssh-with-google-authenticator-on-centos-7/

If you scroll down to the Idea, user mutwakel yassen mentioned "wgetting" the tar ball from the code itself, but looking at the link they provided, it points to the open source version of the Google app, which from my understanding, might be out of sync from the official Google version, which makes me conceed if it will work with my phone app.

Does anyone know if the official packages are in the repo, or if there is a way to install the Google version in other means? Or has anyone gotten the most recent version of Google Authenticator (at the time of writing, 4.44) to work with the open source project?

I have two recovery partition and I need to delete one of them. I need to know which recovery the active, recovery partition (400 MB)or recover partition (839MB) .

Succinctly: I want to wipe this machine, and install something that will get me closer to the command line, but also easily integrate a nice slim GUI that draws on Windows and Mac.

In more detail:

I have a Windows seven machine with some weird file structure. I don't have admin or root privileges. I've got a boot disk for Windows seven. I took a UNIX class and thought I'd be fine adding a partition of Ubuntu studio... And I was not fine. Attempts to fix this on my own has made it worse... There were some hardware issues, so I may need to repurpose this to parts. It was a hand me down, and the previous user liked clickbait a lot... Which makes me want to not give up if it is a software problem.

It boots into Windows 7, but Is really slow. I can't log into either of the Ubuntu partitions, and I don't know how passwords got onto them. The installs seemed... Very sketchy. By the time I hit a command line, I tried ls and couldn't figure out what exactly had happened. A friend suggested arch Linux, but by that point I couldn't get back into the partition. Another friend gave me a flash drive to boot from. Bad timing led to leaving and allowing the battery to die mid install.

Right now I'd love to replace every bit with a zero, then install something that will have a GUI, a nice lack of granting execute permissions, and beginner friendly documentation.

After that, functionality for a virtual machine, specifically Windows, with the intention of using solidworks and some other programs that the college I'm attending only has Windows licences for would be nice.

A DAW would be very nice as well, something like pro-tools with support for focusright interfaces etc.

Also, as a note on Windows 10, it failed to install on this machine, repeatedly, which was one of the factors leading to the Ubuntu installs.

I have a bash script where $DIR is a directory name that may contain spaces.

This:

rm "$DIR/*.MOV"

gives the error "No such file or directory". There is no file literally named "*.MOV"; I want the * to expand into multiple arguments - one per matching filename.

Eg:

rm some folder/foo.MOV some folder/bar.MOV

How can I do this?

What I am trying to so is: Open a WInSCP-Session using a private key instead of a password.

The simple Password-Approach works:

 WinSCP.exe root:[email protected]

But the next step, using the key, does not work. Just to be clear. I mean this key:

I tried:

 WinSCP.exe root:[email protected] /privatekey "path/to/private_key.ppk"

But WinSCP ignores the parameter and asks for the password. So, what did I forget?

Currently I have Google Chrome Version 49.0.2623.87 m.

Approximately everything is okay with me before 1 month. But currently I am having a trouble with my Chrome Browser. I have Win 8.1 and Core i-3 Dell Laptop. Ram 4GB. Every tabs get reloaded when I am another page/app/window. Any help may appreciable. Thanks in advance.

I have a PC with an Asus motherboard running Windows 7 Pro. Yesterday I installed latest Windows updates, restarted, and shortly afterwards hibeated the machine.

This moing on un-hibeating I got a black screen with:

The system found unauthorized changes on the firmware,operating system or UEFI drivers

It also said:

Go to BIOS Setup > Advanced > Boot and change the current boot device into other secured boot devices

The only way I was able to get it to boot was by changing the BIOS secure boot OS to 'other OS' i.e. I think this means secure boot is effectively disabled.

There have been no hardware changes to this machine recently (last thing I changed was adding more RAM about 3 weeks ago, and it has successfully rebooted multiple times since then). There is no CD/DVD or bootable USB device connected.

I'm running a full MSE scan just to be sure / paranoid. Is it possible the Windows updates caused this? Should I be conceed about disabling secure boot? I've tried setting it back to enable however the original message reappears.

I have changed the hostname in avahi-daemon.conf file in /etc/avahi so as that the host-name=osmc and it's uncommented. When I do a sudo systemctl status avahi-daemon -l I get the following;

● avahi-daemon.service - Avahi mDNS/DNS-SD Stack
Loaded: loaded (/lib/systemd/system/avahi-daemon.service; enabled)
Active: active (running) since Fri 2016-03-18 23:21:31 GMT; 9h ago
Main PID: 1298 (avahi-daemon)
Status: "avahi-daemon 0.6.31 starting up."
CGroup: /system.slice/avahi-daemon.service ├─1298 avahi-daemon: running [osmc.local └─1300 avahi-daemon: chroot helpe
Mar 18 23:21:31 osmc avahi-daemon[1298]: New relevant interface eth0.IPv4 for mDNS.
Mar 18 23:21:31 osmc avahi-daemon[1298]: Network interface enumeration completed.
Mar 18 23:21:31 osmc avahi-daemon[1298]: Registering new address record for 192.168.0.13 on eth0.IPv4.
Mar 18 23:21:31 osmc avahi-daemon[1298]: Registering HINFO record with values 'ARMV7L'/'LINUX'.
Mar 18 23:21:32 osmc avahi-daemon[1298]: Server startup complete. Host name is osmc.local. Local service cookie is 1330739464.
Mar 18 23:21:33 osmc avahi-daemon[1298]: Service "osmc" (/services/udisks.service) successfully established.
Mar 18 23:21:33 osmc avahi-daemon[1298]: Service "osmc" (/services/ssh.service) successfully established.
Mar 18 23:21:33 osmc avahi-daemon[1298]: Service "osmc" (/services/sftp.service) successfully established.
Mar 19 08:58:24 osmc avahi-daemon[1298]: Files changed, reloading.
Mar 19 08:58:52 osmc avahi-daemon[1298]: Files changed, reloading.

I can ping -c 3 osmc.local and get 0% loss. However when I try to access a service e.g nzbget or transmission via a chrome on my Android device I get DNS could not be resolved. It works fine on my Ubuntu PC and my Chromebook, any ideas?

I have my machine set to wa me when the battery is at 25% and got to hybrid sleep at 15%.

Well, I must have been extremely focussed on what I was working on because I didn't see the waing bubbles and suddenly lost power and some amount of work.

Is there a way to force the system to go to hibeation/sleep regardless what I am doing or wa me in such a way so I cannot miss it, a system dialog box perhaps?

Thanks.

On Windows machine,

I start a server on port 62325

$ netsh firewall show state shows:
Ports currently open on all network interfaces:
Port Protocol Version Program
-------------------------------------------------------------------
62325 TCP Any (null)

But when another client on different machine tries to connect to that port it shows on that client machine:

Ero 10061 : No connection could be made because the target machine actively refused it

Though loopback(127.0.0.1) for a client on the same machine works.

Full code: https://stackoverflow.com/questions/36083310/no-connection-could-be-made-because-the-target-machine-actively-refused-it-error