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1500 questions
104
votes
2 answers

How do I enable Ubuntu (using full disk encryption) to call LUKSsupend before sleeping/suspending to RAM?

This question is related to another one by @Stefan, but it is not a duplicate of it. The questions are slightly different: the author simply wanted to know if this had been implemented, while I'm asking for help specifically on how to do this (in a…
Jonas Malaco
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104
votes
2 answers

Compressing folders with password via command line

I would like to know whether it is possible to do the following via CLI. I have a Folder F which contains several sub folders and some files. I want to compress folder F into .zip file with the "password-only-extract".
Varun
  • 2,109
104
votes
2 answers

What does “%U” mean when calling a command?

When editing the Applications menu, I see for some applications their commands have %U such as gedit %U and gnome-mplayer %U, but others don't such as gcalctool. I was wondering what %U means when calling a command, and when it is needed and when…
Tim
  • 26,107
104
votes
7 answers

In VirtualBox, how do I set up host-only virtual machines that can access the Internet?

In setting up virtual machines with VirtualBox, I often want the following characteristics VM has a static IP host can access VM without port forwarding VM can access the internet I can move my laptop from network to network (e.g. from home to…
Christian Long
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104
votes
7 answers

How to check the information of current installed video drivers?

My CPU usage is high when I do trivial things such as scrolling through a PDF file. So I think my video driver is not properly installed. I want to confirm that by checking the information of my currently installed video driver, such as if there's a…
smwikipedia
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104
votes
2 answers

Where are the Unity desktop wallpapers located?

Please see the picture below. Where are the Unity desktop wallpapers located?
Hejar Mukriyani
  • 1,173
104
votes
7 answers

Installing Java Automatically (With Silent Option)

I'm trying to install Java through apt-get. I found this PPA of Java Installers, however, when I add the repository, update and then issue the apt-get install -y command, the installer for java takes over and it pops up a configuration option. I'm…
Layke
  • 1,379
104
votes
9 answers

What's the best, simplest OCR solution?

I'd like to scan a good amount of papers I have lying around, with the least possible hassle. I would like to convert them to images using Simple Scan, then convert them to text using OCR. Is there a good OCR app with a GUI that will give me good…
Bou
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104
votes
1 answer

How do "apt-get clean" and "apt-get clean all" differ?

What, if anything, is the difference between this command: sudo apt-get clean And this command: sudo apt-get clean all On my Lubuntu 12.04 system, simulating these commands reveals their behavior to be exactly the same: ek@Apok:~$ apt-get -s…
Eliah Kagan
  • 119,640
104
votes
3 answers

Cannot connect MySQL Workbench to MySQL server

I have installed MySQL workbench from Snap Store and MySQL server 8.0 using apt. The server is running fine and I can access MySQL shell from terminal. But I am having issues connecting the Workbench to the server. I'm getting         Cannot…
parv desai
  • 1,259
104
votes
4 answers

Error during converting jpg to pdf

Each time I want to convert jpg file to pdf by this command convert *.jpg pictures.pdf I have this error message: convert: not authorized `pictures.pdf' @ error/constitute.c/WriteImage/1028.
Adon Naaman
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104
votes
11 answers

New alert keeps showing up: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001

I just installed a new Ubuntu Server 18.04. I set my hostname hostnamectl set-hostname ****.openbayou.biz and I set /etc/hosts: 127.0.0.1 localhost [ip address] ****.openbayou.biz hostname # The following lines are desirable for IPv6 capable…
Gregory Schultz
  • 1,309
103
votes
4 answers

Accidentally removed /bin. How do I restore it?

I was working on a directory named bin. After I was finished, because of the ownership of bin and some files within it I accidentally ran: sudo rm -r /bin Instead of: sudo rm -r bin It seems that my hands used to add a / in front of everything I…
Ravexina
  • 57,256
103
votes
11 answers

Steam not opening in Ubuntu 16.04 LTS

I have never used Ubuntu or any other Linux OS before last Friday. For all I know, I might have installed Ubuntu wrong and be missing a component. I would prefer if you use simplest terminology possible, but I'm OK with doing a bit of googling if…
Never2MuchPizza
  • 1,131
103
votes
4 answers

How to Display Hidden Characters in vim?

How can I configure vim to display hidden characters like tabs or spaces ONLY while those characters are typed? I do not want tabs and/or space replaced with special characters like ">" or "_" when the file is written.
dan0
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