Mehran's questions

I'm trying to create a docker image (using a Dockerfile) and as part of the process, I have to install apt-get install python-opencv. But it asks all these questions about geographic area and other stuff. And I cannot answer them since it is within the process of creating a docker image. How can create a docker image with python-opencv without having to answer any questions?

Configuring tzdata
------------------

Please select the geographic area in which you live. Subsequent configuration
questions will narrow this down by presenting a list of cities, representing
the time zones in which they are located.

  1. Africa      4. Australia  7. Atlantic  10. Pacific  13. Etc
  2. America     5. Arctic     8. Europe    11. SystemV
  3. Antarctica  6. Asia       9. Indian    12. US
Geographic area: 

I followed this other post and managed to turn my DSLR into a webcam successfully. To test it, I can see the live video in applications like guvcview and my DSLR is recognized as Dummy video device (0x0000).

But the same device can not be found in Chrome when I try to use it as a webcam. For the record, this is how I initialize the process:

gphoto2 --stdout --capture-movie | ffmpeg -i - -vcodec rawvideo -pix_fmt yuv420p -threads 0 -f v4l2 /dev/video1

[UPDATE]

Thanks to @llogan, I tested with FireFox and it works there! So my problem is only with Chrome.

This is what I'm getting by running the given command:

$ gphoto2 --stdout --capture-movie | ffmpeg -i - -vcodec rawvideo -pix_fmt yuv420p -threads 0 -f v4l2 /dev/video1
Capturing preview frames as movie to 'stdout'. Press Ctrl-C to abort.
ffmpeg version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
[mjpeg @ 0x5653c54659c0] Format mjpeg detected only with low score of 25, misdetection possible!
Input #0, mjpeg, from 'pipe:':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: mjpeg, yuvj422p(pc, bt470bg/unknown/unknown), 960x640, 25 tbr, 1200k tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (mjpeg (native) -> rawvideo (native))
[swscaler @ 0x5653c54bb000] deprecated pixel format used, make sure you did set range correctly
Output #0, v4l2, to '/dev/video1':
  Metadata:
    encoder         : Lavf57.83.100
    Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 960x640, q=2-31, 184320 kb/s, 25 fps, 25 tbn, 25 tbc
    Metadata:
      encoder         : Lavc57.107.100 rawvideo
frame=  551 fps= 23 q=-0.0 size=N/A time=00:00:22.04 bitrate=N/A speed=0.905x    

[UPDATE]

As suggested by @llogan, I tested this other command:

$ gphoto2 --stdout --capture-movie | ffmpeg -i - -c copy -f v4l2 /dev/video1
Capturing preview frames as movie to 'stdout'. Press Ctrl-C to abort.
ffmpeg version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
[mjpeg @ 0x55eaeabdd900] Format mjpeg detected only with low score of 25, misdetection possible!
Input #0, mjpeg, from 'pipe:':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: mjpeg, yuvj422p(pc, bt470bg/unknown/unknown), 960x640, 25 tbr, 1200k tbn, 25 tbc
[v4l2 @ 0x55eaeabe78c0] V4L2 output device supports only a single raw video stream
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
    Last message repeated 1 times

As you can see it did not even initialize the webcam. And to be clear about what I mean when I say it doe not work in Chrome, the webcam menu only shows my other webcam and there's no trace of my DSLR. While in FireFox, I have two webcams to select from. I also opened the developer tools in Chrome and there's no errors/warnings to help understand anything about this issue.

I've just installed kvm on my Kubuntu 18.04 and I got a new user listed on my login screen. Apparently, this is an old bug. Some posts here and there suggested that I should create this file:

/var/lib/AccountsService/users/libvirt-qemu

with this content:

[User]
SystemAccount=true

which I did. But it did not fix the issue. The user is still shown on the login screen. One more thing, before I create the file, I had this user listed in my System Settings as an ordinary user. After I created the file, the user is not listed in the User Manager anymore. So the file has done something but all the way through.

Is there anything else I can try?

Following the newly acquired knowledge that prime-select is only for laptops and in order to switch graphics card for desktops, I have to go to BIOS and switch it there, these are what I did:

1. On the boot sequence, I pressed DEL key to load the BIOS page.
2. As I have an Asus mother board, I went to Advanced mode > Advanced > System Agent Configuration > Graphics Configuration
3. Then I selected iGPU as my Primary Display instead of Auto (I didn't touch Multi Monitor)

After these steps, I saved and rebooted. Then the boot sequence shows while my HDMI is connected to the integrated graphics card (and it shows nothing if it is connected to the discrete one). Everything seems fine till it gets to the OS' logon screen and it just shows a black one.

What I'm trying to achieve here is to use my Nvidia graphics card for processing only (Cuda) and my integrated one for display. And I'm using a Kubuntu 18.04 with Nvidia driver 430.

BTW, if I disconnect the discrete graphics card completely, everything works (to be honest, I didn't test it with iGPU selected, only with Auto).

I'm using Kubuntu 18.04 and I have an Nvidia graphics card with driver 430 installed. I would like to use the Nvidia GPU for its Cuda only and not for the video output. After some search online, it appears that one way to do this is to use Nvidia PRIME.

Here are my issues switching from Nvidia display output to intel (my onboard graphics card):

1. I've seen articles and images of Nvidia X Server Settings with PRIME Profiles tab. I don't have that tab.
2. Some people pointed out that the same functionality could be achieved with commands like sudo prime-select intel. I've done that without any errors. And when I run prime-select query, it shows me intel afterward. But still, I could only get video output out of Nvidia HDMI (after reboot). And it was a very low-resolution output without the Nvidia driver loaded.

BTW, I've purged all the Nvidia packages and reinstalled them from scratch.

Can someone please help me switch the video output to my onboard graphics card?

I'm not sure how but in my Kubuntu 18.04 every single click in the Dolphin file manager leads to opening the file/folder (it wasn't like this before). I know that this behaviour is supposed to be controlled by the two radio buttons in System Settings:

System Settings / Input Devices / Mouse:

Icons
    Double-click to open files and folders (select icons on first click)
    Single-click to open files and folders

But even though the first option is selected, I still get the + and - badges when I hover my mouse cursor over the icons in Dolphin. And each click will open the file or the folder instead of just selecting it.

Does anyone have any solution for me?

I have a long running process on a remote computer which I started like this:

$ nohup ./process > output &

My problem is that the output file is getting bigger and bigger fast. And of course, the only use this file has to me is monitoring the progress of the process:

$ tail -f ./output

So I would like to truncate the file from time to time to conserve the space (I'm afraid I might run out of space). So I tried this:

$ truncate -s 0 output

But it seems since the file is open and being written to, this command has no effect. As a test, once I removed the file but then there wasn't a new one created. So I had lost my progress report and I had to restart the process.

Is there any way I can truncate the file while it is being written to?

I'm using Kubuntu 18.04 and I have an issue with the default audio speaker. I'm using Win7 Mixer and I'm happy with it GUI-wise but it has one issue which is on my nerve. Take a look at the below image:

As you can see I have an HDMI, Speaker, and a headset (HD 4.40BT). And as it is shown in the image, if I want to switch between them, I can click on the icon and choose "Default".

While this moves the green circle to clicked speaker, but audio will be played from the chosen speaker only if it is already playing. In other words, while the default state does change but the new processes that want to play audio they will fallback to the HDMI (always). And the only way I can listen to the audio on my headset is to start the audio and then switch to my headset.

This is really annoying because consider you are watching some YouTube video and want to listen to it on your headset. So you'll make the headset your default speaker. But once you click away from the video and go to another one or even pause for a second, the audio will be played from the HDMI again while the green circle is still on the headset!

Does anyone know how can I fix this problem?

[UPDATE]

While the default applet suffers from the same problem (exactly the same), pavucontrol only changes the default fallback speaker but as I mentioned earlier, the fallback speaker (the green circle) plays no role what-so-ever. So in other words, pavucontrol does nothing.

[UPDATE]

This is not going be a solution to the problem I've stated above myself. But I just wanted to mention that today the problem was resolved on its own without me doing anything about it!!!

I think there must have been some package updated which fixed the issue. But in anyway, now after I switch to an output, it will stick.

[UPDATE]

As if the situation was not strange enough, the problem that was resolved on its own, is not back. I'm not sure what's going on!

I just deleted my old Ubuntu 14.04 and installed 16.04 and I'm having trouble finding one of my audio devices.

You see, I have an HDMI monitor and an onboard audio card. In my old Ubuntu, I used to have two options in the "Sound settings" (in fact more than two but the rest didn't do anything). Selecting the HDMI option would have resulted in the audio to be played by my monitor and there was this (something) Analog option which selecting that would lead to the audio to be played from my headphones (connected to the onboard audio card).

Now that I've installed Ubuntu 16.04, the analog option is missing from the Sound settings window and the audio is played only by my monitor (HDMI). The funny part is that my headset's mic (connected onboard audio card) is active as the input device. But the output device of the same exact audio card is not recognized.

Here are some info I've gathered:

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 9: HDMI 3 [HDMI 3]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: PCH [HDA Intel PCH], device 0: ALC887-VD Analog [ALC887-VD Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: PCH [HDA Intel PCH], device 1: ALC887-VD Digital [ALC887-VD Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

And here's the screenshot of my sound setting's window:

I have to use ssh on regular basis and I would like to exit each terminal before closing the window. This means I have to execute exit multiple times. And I was wondering if there is a hotkey for that? I know Ctrl + Shift + q closes the terminal but that's not exit.

I've got an Ubuntu 16.04 installed and for the past few days. I was able to play sounds from my analog audio output (with my headphones connected to it).

I also have an HDMI connection and speakers on my monitor. Today I switched the audio output to HDMI, the moment I did this, I realized that my analog audio output is missing in the list but it was too late. Now I can not switch back to my analog anymore. Even though I know it is installed and working.

The funny thing is that when I turn on my computer, the welcome sound is still played from my headphones (the audio output that is missing).

I've read a couple of posts and questions, here and there, but they mostly assume that your sound card is not installed, while mine is.

Has anyone got any suggestions for me?

[UPDATE]

$ lspci | grep Audio
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)

Even though I'm not sure if it is relevant:

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: PCH [HDA Intel PCH], device 0: ALC887-VD Analog [ALC887-VD Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: PCH [HDA Intel PCH], device 1: ALC887-VD Digital [ALC887-VD Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

By the way, I forgot to mention. My microphone which belongs to the same analog audio device, works.

I have a couple of local domains resolved to 127.0.0.1 in my /etc/hosts file. And it was all alright for a period of time but now when I run:

nslookup test.local

It results in:

Server:     192.168.1.3
Address:    192.168.1.3#53

** server can't find test.local: NXDOMAIN

The 192.168.1.3 is our network DNS and it's not supposed to know my local domain test.local. After a couple of searches I found that /etc/nsswitch.conf file holds information on the priority of the DNS sources to query by. But there was no problem there! Here's mine:

# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc-reference' and `info' packages installed, try:
# `info libc "Name Service Switch"' for information about this file.

passwd:         compat
group:          compat
shadow:         compat

hosts:          files mdns4_minimal [NOTFOUND=return] dns
networks:       files

protocols:      db files
services:       db files
ethers:         db files
rpc:            db files

netgroup:       nis

So does anyone know why my hosts file is not included in DNS look-up?

I've read that I should have nameserver 127.0.1.1 in my /etc/resolv.conf file only if my machine has its own DNS server. Since it doesn't, having it causes problems. But no matter what I do I can not get rid of it!

Here are the things I've done so far:

1. Adding nameserver 192.168.1.3 to /etc/resolvconf/resolv.conf.d/base file. (192.168.1.3 is our network's DNS).
2. Running: sudo resolvconf --enable-updates.
3. Running: sudo resolvconf -u.
4. Running: sudo service network-manager restart (just to make sure).

Yet when I open the /etc/resolv.conf file it says: nameserver 127.0.1.1! Does anyone have any idea what's wrong?

Please note that it's actually 127.0.1.1! And I have no idea why it's not 127.0.0.1!

Even when I update the /etc/resolv.conf manually and change it to anything else, the sudo resolvconf -u will revert it back to 127.0.1.1! Where is this address coming from?

I'm trying to test drive the Ubuntu touch on my Nexus 7 (2013) which recently has been upgraded to Lollipop (5.0.2). So I followed the steps starting with backing up my device. But the problem is that adb does not list my device!

$ adb devices
List of devices attached 

$ 

Also:

$ adb backup -apk -shared -all
adb: unable to connect for backup

It's in the case that my tablet is successfully recognized as a mass storage and I can copy to/from it easily. I've also made sure that the developer mode is activated on my device, as I tap on Build number it tells me:

No need, you are already a developer.

Yet adb can not find it. How can I find what's wrong with it?

[UPDATE]

I just realized that I've also got a smart phone! It's a Moto G with KitKat 4.4.4 on it. adb does not find that either!

I've just install Ubuntu 14.04 (trusty) to give a test run as I need to use monodevelop I've also decided to install that too. Previously I'd installed monodevelop compiling it from scratch on my 12.04 with so much effort. And this time I thought it would be nice if I could do it the easy way, PPA.

So I added ppa:ermshiperete/monodevelop and tried:

$ sudo apt-get install monodevelop-current
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 monodevelop-current : Depends: monodevelop-4.0 (= 4.2.2-1) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

I'm relatively new to PPAs so I'm not sure if I'm doing something wrong or there's a problem with monodevelop + 14.04?

I'm trying to install MySQL 5.6 on my Ubuntu 12.04 over the already installed 5.5 the easy way (using PPAs).

I've found Ondřej Surý's PPA here. It sounds promising but I couldn't upgrade my MySQL. Here are the steps I've taken:

1. sudo add-apt-repository 'deb http://ppa.launchpad.net/ondrej/mysql-5.6/ubuntu precise main'
2. Openning Update Manager I pressed Check button to retrieve the database for newly added repository.
3. A bunch of packages were listed including MySQL client 5.6 and others but they were all small packages (matter of kB).
4. I downloaded and installed all of the listed packages (except one which I'll tell you about it later).
5. Restarted mysqld daemon.

Having done all above, I see no change in my MySQL server version, it's still 5.5.35! The one package that didn't install was perhaps the most important one, it's called:

MySQL database sever (metapackage depending on the latest version)
mysql-server (Size: 88 kB)

And the reason why I didn't install it is because I can't! Even though it's there in my update manager's list with a check-box but the check-box is disabled and I'm unable to check it. It's just stuck there and won't go away or anything.

Did I miss a step or something? How can I install MySQL 5.6?

I've got an Ubuntu desktop 64bit with a VMware workstation 8 installed on it and now I'm trying to install an Ubuntu server 12.04.2 64bit as a VM but it prompts error and stops.

Here's the error:

Unable to install the selected kernel
An error was returned while trying to install the kernel into the target system.
Kernel package: 'linux-generic-lts-quantal'.
Check /var/log/syslog or see virtual console 4 for details.

Afterwards it goes to Ubuntu installer main menu and I used the shell access ash to read the /var/log/syslog to look for the error. Here's what I found (even though I have no idea what I'm looking for!):

in-target: E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

And a couple of lines later:

base-installer: error: exiting on error base-installer/kernel/failed-install

Can someone tell me what's going on? I've just downloaded the ISO file for Ubuntu server using Torrent and I will download it once again from their website later even though I don't think the file is damaged as it gets opened with Archive Manager successfully!

[UPDATE]

I've tested the same ISO image file with AQEMU and faced the same results.

I've also noticed that the image file I'm downloading directly from Ubuntu's website is 12.04.3 while the one from torrent is 12.04.2.

We shall see if this new image file will work in few hours (it's the second time I'm downloading it as the first time failed with a 404 error).

[UPDATE]

I've just downloaded 12.04.3 from torrent and it works fine. The problem was either the 12.04.2 or my version was damaged!

I'm trying to compile the latest version of MonoDevelop (4.0.9) on my Ubuntu 12.04 and I'm facing errors I can not overcome. Here are my machine's configurations:

OS: Ubuntu 12.04 64-bit
Mono: version 3.0.12

And here are the commands that I ran to download MonoDevelop:

$ git clone git://github.com/mono/monodevelop.git
$ cd monodevelop
$ git submodule init
$ git submodule update

And afterwards to compile:

./configure --prefix=`pkg-config --variable=prefix mono` --profile=stable
make

Then I faced the following errors (sorry if it's long):

...
Building ./Main.sln
xbuild /verbosity:quiet /nologo /property:CodePage=65001 ./Main.sln /property:Configuration=Debug
/home/mehran/git/monodevelop/main/Main.sln:  warning : Don't know how to handle GlobalSection MonoDevelopProperties.Debug, Ignoring.
:  warning CS1685: The predefined type `System.Runtime.CompilerServices.ExtensionAttribute' is defined in multiple assemblies. Using definition from `mscorlib'
/usr/lib/mono/4.0/Microsoft.CSharp.targets: error : Compiler crashed with code: 1.
:  warning CS1685: The predefined type `System.Runtime.CompilerServices.ExtensionAttribute' is defined in multiple assemblies. Using definition from `mscorlib'
Editor/IDocument.cs(98,30): warning CS0419: Ambiguous reference in cref attribute `GetOffset'. Assuming `ICSharpCode.NRefactory.Editor.IDocument.GetOffset(int, int)' but other overloads including `ICSharpCode.NRefactory.Editor.IDocument.GetOffset(ICSharpCode.NRefactory.TextLocation)' have also matched
PatternMatching/INode.cs(51,37): warning CS1574: XML comment on `ICSharpCode.NRefactory.PatternMatching.PatternExtensions.Match(this ICSharpCode.NRefactory.PatternMatching.INode, ICSharpCode.NRefactory.PatternMatching.INode)' has cref attribute `PatternMatching.Match.Success' that could not be resolved
TextLocation.cs(35,23): warning CS0419: Ambiguous reference in cref attribute `Editor.IDocument.GetOffset'. Assuming `ICSharpCode.NRefactory.Editor.IDocument.GetOffset(int, int)' but other overloads including `ICSharpCode.NRefactory.Editor.IDocument.GetOffset(ICSharpCode.NRefactory.TextLocation)' have also matched
TypeSystem/FullTypeName.cs(87,24): warning CS0419: Ambiguous reference in cref attribute `ReflectionHelper.ParseReflectionName'. Assuming `ICSharpCode.NRefactory.TypeSystem.ReflectionHelper.ParseReflectionName(string)' but other overloads including `ICSharpCode.NRefactory.TypeSystem.ReflectionHelper.ParseReflectionName(string, ref int)' have also matched
TypeSystem/INamedElement.cs(59,24): warning CS0419: Ambiguous reference in cref attribute `ReflectionHelper.ParseReflectionName'. Assuming `ICSharpCode.NRefactory.TypeSystem.ReflectionHelper.ParseReflectionName(string)' but other overloads including `ICSharpCode.NRefactory.TypeSystem.ReflectionHelper.ParseReflectionName(string, ref int)' have also matched
TypeSystem/IType.cs(50,26): warning CS1584: XML comment on `ICSharpCode.NRefactory.TypeSystem.IType' has syntactically incorrect cref attribute `IEquatable{IType}.Equals(IType)'
TypeSystem/IType.cs(319,38): warning CS1580: Invalid type for parameter `1' in XML comment cref attribute `GetMethods(Predicate{IUnresolvedMethod}, GetMemberOptions)'
TypeSystem/TypeKind.cs(61,17): warning CS1580: Invalid type for parameter `1' in XML comment cref attribute `IType.GetNestedTypes(Predicate{ITypeDefinition}, GetMemberOptions)'
TypeSystem/SpecialType.cs(50,52): warning CS1580: Invalid type for parameter `1' in XML comment cref attribute `IType.GetNestedTypes(Predicate{ITypeDefinition}, GetMemberOptions)'
/usr/lib/mono/4.0/Microsoft.CSharp.targets: error : Compiler crashed with code: 1.

I've accidentally removed all my home directory (don't judge!). My early search results led me to applications like extundelete and photorec. But the results were not acceptable. extundelete exits unexpectedly (without doing anything) and photorec recovers files in a flat structure. I wonder if there's an application which recovers files and folders together. My lost archive is consisted of thousands of files which are worthless if they are not structured in the original folders!

I've just removed most of the files in my home directory accidentally, using rm -f command. Anyway, I searched and found some of the tools for recovering deleted files, like extundelete, foremost and photorec. The problem is that I don't have an extra partition to specify as the output-dir to save the recovered files to. All of my hard disk is in one partition and it's the one I'm trying to recover. And on the other hand, the files to recover are pretty huge.

So my question is, how can I recover deleted files into the same partition as the original files? Does any of the tools available recover files in place? I mean hypothetically speaking it must be doable to restore a file pointer into the filesystem without actually copying the file body!? Actually it must be much faster and much easier for an application to do that! (if you ask me)