Ask Ubuntu General Room

DK Bose

02:21

@dessert, one caution about using water derived from sewage for crops: things like cysts are pretty tough and may cause problems if ingested via uncooked stuff like lettuce, and other salad components.

Kulfy

07:34

Working fine at my end.

Fabby

It was a fluke...

Kulfy

I have experienced this multiple times in the past.

Ubuntu Questions on U&L

08:12

0

Q: Can i stop/cancel gparted resize in middle of move to the right?

Alright, so i wanted to extend my / partition from 20g to 100g while taking 80g from /home partition. I started gparted and started the process. My / was in sda3 (3rd position) My /home was in sda5 (5th position). So i resized the front of sda5 to 80g, but i didnt know it would move all of my ...

Ubuntu Questions on U&L

10:12

0

Q: How to get all package names that were not installed from a repository in /etc/apt/sources.list

Is there a way to get the names of all installed packages that are not installed from repositories listed in /etc/apt/sources.list ? Or get the name of all packages that were installed locally(using dpkg -i) and not from any repository ?

debian ubuntu apt package-management repository

Ubuntu Questions on U&L

13:33

0

Q: How can I install SOGo within Plesk?

I hope someone of you knows Plesk. And maybe also SOGo. Since 3 years or so there is a feature request within Plesk to include SOGo but nothing happened since this time. So I can wait or do it myself. Because I think the last solution is the best one, I'm looking for a way to include SOGo to a Pl...

linux ubuntu package-management email plesk

0

Q: Update BIOS on ubuntu

I am using a HP 15 laptop running Ubuntu and am trying to find BIOS for my hardware. The current version is 2013, its strange and unfair that HP thinks people only use Windows. Is there a way i can possibly extract files from the exe file available for the Windows system and update my BIOS to 20...

ubuntu hardware bios

DK Bose

14:30

Is askubuntu.com/q/1142881/248158 on topic? It involves a "respin".

Ubuntu Questions on U&L

14:56

0

Q: Thunderbird can't find mail server configuration

Hello stackexchange community. I'm having issues when it comes to connecting to my mail server using Thunderbird client. The weird thing is that I can connect to my mail server usign telnet in the client "telnet mail.zumsfresh

debian ubuntu postfix dovecot thunderbird

Kulfy

15:09

@DKBose Looks like a question perfect for meta

DK Bose

15:26

@Kulfy Will do!

Kulfy

@DKBose An edit and +1 :)

2 edits* (Grace period expired :/)

Ask Ubuntu Meta

15:46

2

Q: Are "respins" on-topic?

I came across Ubuntu 18.04 (respin) installer crashes on Dell XPS 15 9560. It deals with a respin of Ubuntu 18.04: Collection of scripts and tweaks to adapt Ubuntu and Linux Mint ISO images to let them run smooth on Dell XPS 15 9560. This might work on other Dell XPS too. From the GitHub l...

discussion scope

Ubuntu Questions on U&L

16:55

0

Q: Grub rescue: '/boot/grub/i386-pc/normal.mod' not found

I installed ubuntu 18.04 using usb. On restarting I got Error: unknown filesystem Entering rescue mode grub rescue> This is what I tried ls (hd0,msdos7) / set prefix=(hd0, msdos7) /boot/grub insmod normal And I got this message '/boot/grub/i386-pc/normal.mod' not found. How do I resolve thi...

ubuntu

vidarlo

19:08

This answer - which seems to be the target of a large bounty - confuses me a bit. It goes counter to what I know about NFS, and it goes counter to what I know about nobody user...

Is someone able to shed some light on this?

Ubuntu Questions on U&L

19:33

0

Q: Nvidia Graphics driver problems with gdm3 and external display connection

I'm experiencing multiple issues with my Nvidia driver, the one I'm trying to fix right now is that my laptop won't detect an external display connected via HDMI. For some reason I don't have a xorg.conf file right now, when I generate one or copy over my backup the system is stuck at a black scr...

ubuntu nvidia display gdm gdm3

Ubuntu Questions on U&L

20:13

0

Q: Some font sizes are strangely big

On my Lubuntu (ubuntu based) VM I see different font sizes, it's very strange. In some apps it looks normal, in others the fonts are extremely large. Even in some apps there are some huge variations of the font sizes between a section and another. What can I do? Screenshots

ubuntu virtualbox fonts lubuntu size

Ovie Trix

Hello, I'm pretty confused on how DNS works.

Where can I find a helpful guide.

vidarlo

@OvieTrix at what level?

For a brief overview, the wikipedia article is fairly good

Ovie Trix

I just purchased a domain @vidarlo, and want to point it at my server but, I was wondering if there was a way to detect the packet so I can forward that packet to a webserver vm

vidarlo

DNS has nothing to with packets

DNS is a phone book. It says that example.org has a IP of 93.184.216.34

You could configure a reverse proxy on a host that direct traffic with the HTTP host header example.org to your VM

or if you only have one webserver, simply forward all traffic on port 80/443 to your VM

DNS doesn't really enter into what you want to do at all, as you describe your problem.

Thomas Ward

yawns I heard DNS and then packets mentioned

vidarlo is correct.

vidarlo

20:25

and I guess @ThomasWard would suggest nginx as a reverse proxy :)

Thomas Ward

or haproxy depending on what you're proxying :P

if you're proxying HTTPS/HTTP then yes nginx

Ovie Trix

So, I can use Nginx to redirect the traffic to my server, and have multiple domains pointing to the server?

vidarlo

yes

Ovie Trix

awsome thanks @vidarlo!!!

vidarlo

but if all your websites is hosted on a single host, you can use NAT as well, just redirect everything on port 80 and port 443 to that VM

that's probably a lot higher performance than a proxying solution in terms of latency and troughput

...not that it would really matter :)

Thomas Ward

20:31

if you're like ME though you have multiple VMs running different services independently of each other and you have either nginx or haproxy doing the handoff to the individual backend VMs.

but meh

Ovie Trix

I'm treating the host like a router

Thomas Ward

not everyone has a massive virtualization cluster like I do :p

vidarlo

@ThomasWard yeah, it makes sense in some scenarios, but if you have five websites hosted on a single VM, it strikes me that NAT is simpler.

Ovie Trix

Should I still be using iptables or will they be deprecated soon?

Thomas Ward

why would iptables be deprecated

it's part of the Linux kernel for firewalls

Ovie Trix

20:34

I saw somewhere I think in an article, that ntables would replace it

I'm just going to take articles with a grain of salt from now on

Thomas Ward

state your source because i don't think that's true :p

vidarlo

even if it's deprecated, kernel features don't die quickly.

Thomas Ward

yeah unless the article is a blog post on Canonical or from one of the Ubuntu mailing lists confirmed by the relevant teams, it's hearsay and rumor and lies.

TO MY KNOWLEDGE, in ubuntu, there are no plans to deprecate iptables

vidarlo

I've seen discussions about replacing it in Linux, but that's more academic discussions where someone makes a point that iptables is bad for reason x, solution a is much better because of y

Ovie Trix

I'm going to sub to mailing lists from now on

vidarlo

20:40

@OvieTrix LWN :)

They provide a pretty good overview of changes and significant events in the Linux community

RobotHumans

20:50

Good luck all on moderator elections.

3

Ubuntu Questions on U&L

21:31

0

Q: HDMI on 400px x 400px Displays Only Static

I am currently working on a small embedded display (400x400) which communicates via MIPI but I have an HDMI->MIPI adapter board. Using HDMI from a Mac computer runs the display perfectly fine. However, when I try to run it from linux, in most distros I've tried, it instead displays unmoving color...

ubuntu linux-kernel drivers android hdmi

Rinzwind

@OvieTrix yes, and it will but not soon

@ThomasWard nftables has support for lookup tables and has debugging :)

Moytaba

why is this becoming an infinte loop?

Rinzwind

but that wont make it. Linux is heading towards bpfilter as a replacement of iptables

Moytaba

counter_value(){ echo $counter }
declare -a array=(0 1 2 3 4 5)
counter=0
while [[ -v array[counter_value] ]]; do echo $counter; counter=$((counter+1)); done

Rinzwind

and the article @ThomasWard lwn.net/Articles/747551

Byte Commander

21:47

what is -v?

Moytaba

@ByteCommander checks whether that element of the array is set

Byte Commander

weird that it isn't documented in help test or help [[

Moytaba

@ByteCommander yeah :) I was surprised when realized that too

Byte Commander

@Moytaba d'oh. while [[ -v array[counter] ]]; of course.

not counter_value

Moytaba

@ByteCommander because counter_value is echoing...!?

thanks

Byte Commander

21:57

but the function doesn't get called that way

while [[ -v array[$(counter_value)] ]]; do echo $counter; counter=$((counter+1)); done would work too

but why complicate it

besides, you have to counter_value(){ echo $counter ;} (add the semicolon if you one-line the function)

Moytaba

@ByteCommander thank you! 0/

Ubuntu Questions on U&L

23:30

0

Q: Changed output from mipcc

When I first ran echo '#include <stddef.h>' | mpicc -M -E after installing libopenmpi-dev(apt-get install libopenmpi-dev), it printed out a path to a header file, something like /usr/lib/gcc/x86_64-linux-gnu/5/include/stddef.h but now when I rerun the command, I am getting gcc: fatal error...

ubuntu aws ubuntu-xenial

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Ask Ubuntu General Room