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1500 questions
270
votes
11 answers

How do I start/stop mysql server?

I tried to find in some articles describing how to correctly start & stop mysql server. I found this link: How to start/stop MySql server on Ubuntu 8.04 | Abhi's Blogging World I ran this command: /etc/init.d/mysql start but I see this error…
user471011
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269
votes
20 answers

How do you reset a USB device from the command line?

Is it possible to reset the connection of a USB device, without physically disconnecting/connecting from the PC? Specifically, my device is a digital camera. I'm using gphoto2, but lately I get "device read errors", so I'd like to try to do a…
cmcginty
  • 6,016
268
votes
4 answers

How do I stop Apache2 from automatically starting on boot?

How do I stop Apache2 from automatically starting on boot? I can't seem to find an option that disables the automatic start-up when I turn on the machine.
chip
  • 2,971
267
votes
8 answers

How can I measure the execution time of a terminal process?

I'm trying to measure the execution time of a process that I call via the command line (i.e., I want to find out how long it takes to for the process to finish). Is there any command that I can add to the command calling the process that will…
user848635
265
votes
20 answers

Ubuntu 16.04 ssh: sign_and_send_pubkey: signing failed: agent refused operation

I just upgraded my Ubuntu System from 15.10 to 16.04 by completely wiping the Ubuntu 15 partition from my system. After installing Ubuntu 16.04 I recreated my ssh keys as I forgot to back them up, but whenever I attempt to use ssh I get…
Lektonic
  • 2,753
264
votes
3 answers

How to exclude multiple directories with rsync?

I am trying to backup my home directory using rsync, and I want to exclude some of the directories that contain junk. I want to specifically exclude /home/ben/.ccache and /home/ben/build. Unfortunately the documentation for rsync was information…
Freedom_Ben
  • 9,532
264
votes
5 answers

How do I enable the "Universe" repository?

How do I get to the Universe Repository in supported versions of Ubuntu?
Dr.C.Badrinathan
  • 2,705
263
votes
10 answers

Can't format Ubuntu installation stick

I've made an USB installer stick from Windows with Ubuntu 16.04 LTS , now I'm trying to format it from Ubuntu. When I try to format I get this error : This partition cannot be modified because it contains a partition table; >please reinitialize…
Nephilim
  • 2,631
263
votes
2 answers

How do I make my systemd service run via specific user and start on boot?

I just upgraded from Ubuntu server 14 to version 15. I had trouble getting my upstart script working after the upgrade, and read that systemd is the new default. I'm far from a linux expert, so please go easy on me :-) Here is what my upstart script…
void.pointer
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263
votes
10 answers

How can I restart pulseaudio without having to logout?

Sometimes the pulseaudio service stops and it doesn't restart itself when I open an audio file with banshee or totem. How I can make pulseaudio start again without having to logout?
gourgi
  • 5,398
262
votes
13 answers

Uninstall GRUB and use Windows bootloader

I have Windows 8 pre-installed, and then I installed GRUB with Ubuntu. Ubuntu is not my thing, so now I want to remove it along with GRUB. From what I have learned, with UEFI, GRUB does not overwrite the windows bootloader in the EFI partition and…
mrolive
  • 2,775
262
votes
4 answers

How to resize an image through the terminal?

I have Ubuntu 10.04. I have converted image through terminal using the following command: convert myfigure.png myfigure.jpg But I want to resize the height and width of the converted image. Is there any way to do this?
Md Kutubuddin Sardar
  • 2,761
262
votes
5 answers

How to create a permanent "alias"?

If you create an alias for example: alias cls="clear" It exists untill you kill terminall session. When you start a new terminal window the alias doesn't exist any more. How to create "permanent" alias, one that exists in every terminal session?
Zango
  • 5,133
262
votes
6 answers

How to understand the Ubuntu file system layout?

In Windows there’re perhaps only a couple of important folders (by important I mean important in my logical picture of the Windows file system) in the installation drive (in my case C:\). Namely Program Files and Windows. I simply stay away from…
Shashank Sawant
  • 2,929
262
votes
11 answers

How do I kill processes in Ubuntu?

How do I kill all processes running by my own non-root account? I have some spinning smbd processes that I caused from my windows machine and so I telnetted into the linux server and I want to kill those spinning processes. I don't have authority…
djangofan
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