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1500 questions
168
votes
11 answers

How to hear my voice in speakers with a mic?

I have a USB microphone that I can chat on Skype, record sound etc. But how can I make it so that when my mic is on and I speak, Ι hear it in speakers live without having to record my voice first and then play it back? What apps do I need or where…
Martin Zeltin
  • 5,413
168
votes
9 answers

How to restart GNOME Shell from command line?

I would like to implement a keyboard shortcut to restart gnome-shell whenever this one crashes ( some bugs aren't currently fixed just yet). For this I would need a command line to restart the shell. The Alt + F2 and restart command won't work when…
neydroydrec
  • 4,800
167
votes
18 answers

How to fix virtualbox's copy and paste to host-machine?

Sometimes while using VirtualBox, I have tried copying text from the virtual machine to the host machine but failed. Whenever that happens, I fix it by rebooting the virtual machine. Is there a solution to this because I don't want to keep rebooting…
sam
  • 6,941
167
votes
6 answers

Permission denied when running .sh scripts

./geany_run_script.sh: 5: ./geany_run_script.sh: ./Area_circumference: Permission denied program exited with code: 126 . This problem always occur when I try to execute my code. What might be the solution?
khwilo
  • 1,863
167
votes
15 answers

Create a single pdf from multiple text, images or pdf files

I have a bunch of text files, images and pdf files which I want to convert into a single pdf file. How do I do it?
AJha
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167
votes
8 answers

How to edit pdf metadata from command line?

I need a command line tool for editing metadata of pdf-files. I'm using a Aiptek MyNote Premium tablet for writing my notes and minutes on this device, import them later and convert them to pdf automatically with a simple script using inkscape and…
bdr529
  • 3,118
167
votes
9 answers

Hide current working directory in terminal

As a default, the terminal prompt shows something like: user@system:/folder1/folder2/folder3/folder4$ the deeper you go into the filesystem, the less space is left for typing in commands. Can I change this to only show something like: > I mean, I…
Theodor
  • 1,765
167
votes
2 answers

What does outputting to /dev/null accomplish in bash scripts?

Oftentimes I run into small bash scripts that use this sort of syntax in if statements: some command > /dev/null 2>&1 What is the purpose of outputting to /dev/null like that, and what does the 2>&1 mean? It always seems to work but I'd like to know…
javanix
  • 1,803
167
votes
3 answers

What's the right terminology for Unity's UI elements?

I've sent a few mails to the Ayatana mailing list regarding some UI suggestions for Unity, but I'm afraid I keep confusing the right terms for the UI element, so I would like to have some clarification. Answer Index: Ubuntu 12.10, 12.04 LTS and…
Bou
  • 4,552
166
votes
6 answers

How do I enable automatic updates?

Update Manager is constantly offering me updates (e.g. security fixes, updates from PPAs). How can I tell my Ubuntu installation to automatically download and install updates whenever they become available?
David Siegel
  • 9,052
166
votes
4 answers

How can I display the list of available Wi-Fi networks?

My Ubuntu laptop's Wi-Fi works fine on various Wi-Fi networks. But the list of available networks accessed from the toolbar icon of nm-applet no longer appears. I just see the known networks. The list of hidden networks also doesn't show any new…
Joshua Fox
  • 3,011
166
votes
5 answers

How to enable root login?

I would like to enable the root account on my Ubuntu installation. I realize the security implications of this.
Lincity
  • 25,809
166
votes
13 answers

Unable to use IntelliJ IDEA keyboard shortcuts on Ubuntu

I am very new to Ubuntu, and I'm having a problem that I don't know how to get it fixed. I even tried looking it up on the web for answers, but maybe I don't know the right terms to search for it. I work with IntelliJ IDEA , an application for…
Rodrigo Sasaki
  • 2,079
166
votes
8 answers

How do I SSH to machine A via B in one command?

I want to access a computer, say machine A which is based in my university's network. However, this computer is only accessible via the internal network of the university, so I can not use SSH to this computer from home directly. Here's what I do…
nikosdi
  • 1,852
166
votes
8 answers

Whats the simplest way to edit and add files to "/var/www"?

Having installed the web server is there a simple way to set a user able to use the graphic interface to copy files and directories to the local web server /var/www I gave myself administrative privileges in Ubuntu but it still doesn't allow copies.
k_graham
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