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1500 questions
319
votes
3 answers
How to extract a zip file to a specific folder?
I have a zip file that I need to extract into another folder. When I set up extraction to said folder it says "permission denied". I've read here how to log into a terminal as root and superuser but can't find anything to help me.
I need to extract…
Tj Cooke
- 3,199
318
votes
6 answers
How do I find out which process is eating up my bandwidth?
I think I'm being the victim of a bug here. Sometimes while I'm working (I still don't know why), my network traffic goes up to 200 KB/s and stays that way, even tough I'm not doing anything internet-related.
This sometimes happens to me with the…
Malabarba
- 10,546
317
votes
6 answers
Why is swap being used even though I have plenty of free RAM?
I thought the whole essence of swap was to act as a temporary storage safety net when RAM was full but my swap partition is constantly being used even though I sometimes have as much as 3GB free RAM. Is this normal?
Mysterio
- 12,288
316
votes
10 answers
What is the difference between Terminal, Console, Shell, and Command Line?
What is the difference between Terminal, Console, Shell, and Command Line?
Anon
- 12,339
316
votes
13 answers
What software can I use to view epub documents?
What software can I use to view .epub documents?
Olivier Lalonde
- 60,581
315
votes
9 answers
How can I fix a 404 Error when using a PPA or updating my package lists?
PPA seems to be constantly offline. Whenever I use sudo apt-get update, this error is shown:
W: Failed to fetch http://ppa.launchpad.net/ 404 Not Found
How do I fix these errors?
Pedro
- 3,151
315
votes
10 answers
How can I tell, from the command line, whether the machine requires a reboot?
When you install certain updates (e.g. a new kernel) in Ubuntu Desktop, you get an indication that a reboot is required (in Lucid, the logout icon turns red).
How can I check, from the command line, whether an Ubuntu server requires a reboot?
I…
Marius Gedminas
- 11,555
315
votes
5 answers
Why did the command ":(){ :|: & };:" make my system lag so badly I had to reboot?
DANGER!
Do not run this command to 'test' it unless you are prepared for a crash and/or force-rebooting your system.
I was in my Virtualbox running 12.04 trying to compile an app, and while waiting I happened to chance upon a forum where a comment…
blade19899
- 26,994
314
votes
20 answers
SSH connection problem with "Host key verification failed..." error
I can connect to another Ubuntu machine in my LAN via SSH. On both of then PC's I installed openssh-server
but from another Ubuntu computer I can not connect to my PC via SSH and I got this error:
Host key verification failed...
Navid
- 3,353
313
votes
9 answers
How do I find out which repository a package comes from?
Is there a method or command which can tell from which repository a package is coming from?
dfme
- 3,253
312
votes
8 answers
How can I fix apt error "W: Target Packages ... is configured multiple times"?
I just installed Ubuntu Gnome 16.04. I told it to save my documents - which worked. Some software had to be reinstalled. Now when I run sudo apt-get update I see this:
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in…
Tim
- 33,500
312
votes
10 answers
How to choose the default gcc and g++ version?
So I have installed gcc-4.4 and gcc-4.3 (same for g++). Now as far as I remember there is a tool in Ubuntu which sets the symlinks for you if you just tell it which version you want. However it does not seem to work in the newest version, which I…
Nils
- 3,361
312
votes
19 answers
How can I securely erase a hard drive?
I'm planning on selling a USB external hard drive that currently contains an old Ubuntu installation with stored passwords and banking information.
How can I securely erase the drive before selling it?
ændrük
- 78,496
311
votes
12 answers
What's a command line way to find large files/directories to remove and free up space?
Looking for a series of commands that will show me the largest files on a drive.
Ryan Detzel
- 3,251
311
votes
23 answers
SSH Permission denied (publickey)
I am trying to connect to a Linode (running Ubuntu 12.04 LTS) from my local machine (also running Ubuntu 12.04 LTS)
I have created a private and public key on my local machine and copied my public key to my Linode's authorized_keys file. However,…
Pattle
- 3,249