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1500 questions
372
votes
7 answers

Boot drops to a (initramfs) prompts/busybox

I am running an HP pavilion dv6000 dual boot win7 and Ubuntu 12.04. (well, up until today). After a reboot, the boot process drops to the BusyBox shell and I end up at the prompt: BusyBox v1.18.5 (Ubuntu 1:1.18.5-1ubuntu4) built-in shell…
dpm
  • 3,721
371
votes
10 answers

How to prevent "Write Failed: broken pipe" on SSH connection?

What can I do to configure SSH on both client and servers to prevent Write Failed: broken pipe errors? It often occurs if you sleep your client computer and resume later.
sorin
  • 10,135
362
votes
13 answers

How can I monitor the memory usage?

I have used top to see the memory usage at the moment. But I would like to monitor the memory usage over a period of time. E.g start monitoring and then execute a few commands, and final stop the monitoring and see how much memory that have been…
Jonas
  • 8,667
362
votes
6 answers

Getting "System program problem detected" pops up regularly after upgrade

This started to happen immediately after I had rebooted the first time after doing a system upgrade. It first starts with a dialogue that says "System program problem detected". Then when I try to hit 'report problem' not much happens. I am led…
grrrbytes
  • 3,743
361
votes
7 answers

What is a process, and why doesn't it get killed?

The chrome browser was not responsive and I tried to kill it, but instead of disappearing the process had at its right, and didn't get killed: What is for a process and why it doesn't it get killed?
Eduard Florinescu
  • 8,587
359
votes
6 answers

How do I check the SHA1 hash of a file?

How do I check the SHA1 hash of a file?
Lincity
  • 25,749
359
votes
13 answers

How to format a USB flash drive?

In Windows there is a straightforward "Format" option in a flash drive's right-click pop-up menu. Where's that in Ubuntu?
Ivan
  • 58,745
359
votes
37 answers

How can I improve Ubuntu overall system performance?

What are your tips for improving overall system performance on ubuntu? Inspired by this question I realized that some default settings may be rather conservative on Ubuntu and that it's possible to tweak it with little or no risk if you wish to make…
Decio Lira
  • 8,154
356
votes
9 answers

Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'xxx' doesn't support architecture 'i386'

Getting below error message while issuing : sudo apt-get update Get:1 http://us.archive.ubuntu.com/ubuntu xenial InRelease [95.8 kB] Ign:2 http://repo.mongodb.org/apt/debian wheezy/mongodb-org/3.2 InRelease …
Scott Stensland
  • 17,385
355
votes
14 answers

How can I adjust the mouse scroll speed?

This question has been asked many times with no answer. I've used my basic Google skills and haven't come across a fix. This is system wide. My mouse simply scrolls too fast. I'm new to ubuntu and linux in general. Would switching styles or…
Unisucs
  • 3,551
354
votes
14 answers

"(CRON) info (No MTA installed, discarding output)" error in the syslog

I have a fresh install of Ubuntu 12.04.1 LTS an a number of servers. I have not added any cron jobs or edited my crontab on those servers, however, at around the same time for each machine, I get a 75% CPU spike and the following info in my syslog…
sungiant
  • 3,655
354
votes
17 answers

How do I clear the DNS cache?

I just updated the DNS record (ns1, ns2, ns3.myhostingcompany.com) for a site I've got hosted, but I still get the domain registrar parking page. I'd like to see if the problem is Ubuntu's cached DNS records. Is there a way to clear Ubuntu's DNS…
Jono
  • 4,229
352
votes
8 answers

What is the safest way to clean up /boot partition?

I have 200 MB assigned for the /boot partition. Whenever I try to update the kernel, I receive an error message that basically states /boot is full. What can I do to cleanup /boot and remove/backup the older kernels?
koba101
  • 3,523
  • 3
  • 14
  • 4
351
votes
22 answers

How to list manually installed packages?

I'd like to get a list of packages installed manually by apt or aptitude and be able to find out whether a foobar package was installed manually or automatically. How can we do that from the command line?
Umang
  • 6,733
349
votes
12 answers

How do I view all available HDD's/partitions?

I found a 6 GB IDE HDD in my basement. I want to plug it in and see what might be on it. The drive seems to be recognized in BIOS. I can't find it in Ubuntu to view files, and Ubuntu is the only OS on that particular computer. I was wondering if…
Casey Hungler
  • 3,781
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