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Questions tagged [ubuntu]

Please don't use this tag just because your system is running Ubuntu. Use it _only_ if your question is somehow specific to Ubuntu only. Note that https://askubuntu.com is specifically dedicated to Ubuntu questions.

3
votes
2answers
26 views

How is the /etc/passwd file instantiated?

This is a weird question, but it strikes me as question a fish might ask about water. How is the /etc/passwd file created? Initially. Where I am coming from is this I'm a Linux sysadmin and have ...
0
votes
1answer
28 views

SSH configuration: chown username:group: says invalid user

My Ubuntu16.04.4 server has username: graycodes THE ERROR OUTPUT: chown: invalid user: 'vagrant:vagrant' I'm setting file permissions for OpenSSH. What I'd like is to keep my username as ...
0
votes
0answers
20 views

USB Smart Card Reader Connection Issues

I've recently begun working on a smart card reader connection issue in a company I'm working as an intern. The reader in question is a DUAli DE-620 using the CCID driver, and I'm working with Ubuntu ...
0
votes
0answers
17 views

Backup and restore of Ubuntu with rsync

I am working on backup and restore on ubuntu using rsync command. Here I am having the requirement that I have to take the back up of my system using rsync but on local hard drive (i.e. no external ...
1
vote
0answers
8 views

Chrony connectivity is lost after 10 to 15 mints

I have used for logging sensor data while not connected to the Internet.I want to use a GPS receiver for the time. I would like to use gpsd and chrony to achieve this. here is my chrony.conf file. # ...
0
votes
1answer
17 views

Matlab application command alias creation error in Ubuntu 18.04

I had installed MATLAB 2017b in my Ubuntu 18.04 PC and am able to execute it as : sudo /usr/local/MATLAB/R2017b/bin/matlab -desktop I intend to install another version sometime in the future as well....
0
votes
0answers
21 views

for Linux in the enterprise, what percentage of the market is RHEL/CentOS/Oracle? [on hold]

I worked at Hortonworks in a previous life. The vast majority of our customers ran RHEL or some Linux variant that's similar to RHEL (e.g. CentOS, Oracle linux, etc...). I don't have an exact number, ...
0
votes
0answers
4 views

Disable haptic feedback on Apple trackpad

I have just installed Ubuntu on my 2015 MacBook Pro. The haptic feedback (the noise made by vibration when clicking) was optional in MacOS, but I don't see a way to disable it in Linux. How can I do ...
0
votes
2answers
22 views

How to find the PCI_ID of the port that a certain USB device is plugged into

I would like to find the pci_id of Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p in the output below. /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M |__ Port 1: ...
0
votes
0answers
31 views

Why can't I mount array disks for dd?

When I have an USB disk recognized, I can do the 'dd' command and wipe data from the stick. I cannot do that with a SCSI disk from array such as NetApp. They don't seem to mount at all. The disk would ...
1
vote
0answers
13 views

Ubuntu 18.04 : Trigger scripts when VMware template is cloned

I am trying to trigger some scripts only once when an Ubuntu 18.04 template is cloned. Is there anyway to setup cloud-init and clone to VM to template? I couldn't found how and where this can be ...
0
votes
0answers
41 views

resetting serial port configuration

stty allows to read a serial port configuration. I have noticed that when some program opens, configures and later closes a serial port the last serial port configuration is still present in the ...
1
vote
2answers
26 views

Ubuntu 18.04: Error with mailx smtp - mailx: unrecognized option “-S'”?

I was trying to send an email to multiple persons using mailx (mailx (GNU Mailutils) 3.4). I did that successfully on a previous version of Ubuntu, v16.04, and the script was working fine. Now I have ...
0
votes
1answer
22 views

Systemd-networkd: Run script after DHCP client aqcuires new address

I am on ubuntu 18.04 server. I need to run a script that updates an IP address on CloudFlare (kind of DynDNS script). In previous versions I could do this with a DHCLIENT exit hooks for the interface ...
1
vote
0answers
21 views

Microcap-12 using Wine 3.03 in Ubuntu 18.04. Can't save files

I'm trying to run Microcap-12(electronic circuit simulator) with Ubuntu. Until now, the only, but very important, issue, is that I can't save the files. Info displayed running wine in terminal: When ...
0
votes
1answer
28 views

sniffing serial port - jpnevulator sniffs only some bytes

I use jpnevulator to sniff an application which reads a serial port: jpnevulator --tty /dev/ttyS0 --read Let's assume that the following bytes are sent to the serial port: A B C D E. Sometimes ...
12
votes
2answers
987 views

Is it safe to rename .deb file named by the standards?

The established structure of the .deb file name is package_version_architecture.deb. According to this paragraph: Some packages don't follow the name structure package_version_architecture.deb. ...
1
vote
1answer
26 views

Can I move my Ubuntu 18.04.1 LTS OS to my SSD? (From HD)

I am currently dual booting windows 10 and Ubuntu 18.04.1 LTS. My windows is on my SSD and when I tried to add Ubuntu not too long ago there was only 2gb available shrink space on my SSD. So I thought ...
2
votes
0answers
14 views

KVM passthrough in virtual machine more than 3 usb devices

I have a question, how can i passthrough in virtual machine more than 3 usb devices? I have a usb hub and i cannot passthrough in virtual machine more than 3 usb device. My usb device connect to usb ...
0
votes
1answer
47 views

Why would one have to exit twice when leaving an ssh bash connection? [on hold]

When connected through SSH, a machine requires that I exit twice before returning to the local computer's shell; is there a reason why this happens, it doesn't seem like it should work that way.
0
votes
1answer
46 views

Is it a good practice to use symbolic links for configuration files? [on hold]

I am thinking of creating symlink for configuration files in /etc. In fact, I tried doing it and ended up with services weren't able to restart (even though target file permissions and ownership are ...
0
votes
0answers
16 views

How can I access Windows partition after experiencing a selection loop in Grub?

Distro Kubuntu 18.04 Kernel version 4.15.0-34-generic Hi everyone, After a certain update I suddenly cannot access my Windows 10 partition from Grub. When selecting /dev/sdb2 Windows on Grub, it ...
1
vote
0answers
23 views

Ubuntu 17.10 guest in Virtualbox 5.2, Xorg driver not working

I have Ubuntu 17.10 as a guest in Virtualbox 5.2.8 running on a Windows 7 host. I'm using Xorg, not Wayland. This has previously been working correctly, but I rebooted the system a couple of days ...
0
votes
0answers
23 views

/usr/bin/ld: Cannot find -lbfd [on hold]

I am trying to compile some code for a setup. https://code.google.com/archive/p/decaf-platform/wikis/build_conf.wiki I have managed to reduce the errors by installing the prompted dependencies. Now I ...
0
votes
0answers
20 views

How to disable the microphone mute feature using mouse sensitivity buttons?

I am using a Razer Imperator mouse on Ubuntu 18.04. I am aware that this brand is not very well supported on Linux but, surprisingly, mouse sensitivity buttons work just fine (probably because of ...
0
votes
0answers
15 views

Installation error for OpenVPN and other apps - Something phython2.7 related

I'm trying to install OpenVPN on Ubuntu 18.04 to setup a VPN - but it shows some weird error that says the following: The directory '/home/myusername/.cache/pip/http' or its parent directory is not ...
0
votes
0answers
16 views

permission in wine applications

running wine program argument, on wine at USER/.wine, and program at wherever. running as USER, with ownership of user, and the group set to USER, the result No protocol specified creating Window ...
0
votes
0answers
8 views

bad font in openbox after resume

I've got openbox installed on my laptop on a Ubuntu 16.04 base and it works great. Only at times, after I resume from sleep, my system fonts are messed up and they won't come back until I restart ...
0
votes
0answers
43 views

Maintaining Linux OS for a long time? [on hold]

I have been using Linux as my main operating system (OS) for more than three years. I had tried to maintain my OS to keep it in a good, fast and clean shape so I can use it for a long time. In the ...
1
vote
0answers
34 views

What features did Ubuntu have on by default that made it like Windows?

In the last line of this explain xkcd it says, "This may be a reference to Ubuntu being developed with non-advanced users in mind, with many fail-safes and additional features being turned on by ...
0
votes
1answer
31 views

Common location for systemd unit files on Ubuntu and RHEL

I would like to create a scripted install for a list of Systemd services. This installation should support both Ubuntu (starting with version 16.04) and RHEL/CentOS (starting with version 7.2) I read ...
1
vote
0answers
20 views

How to enable networking for xen guest

I have a really weird one. The setup is an ubuntu 16.04 host, with xen installed. I'm using virt-manager on my mac to manage the machines. I've added a bridged network then I attempted to add a ...
0
votes
0answers
22 views

Identify Resource Usage of a Process: CPU, Memory and I/O [duplicate]

I need to request some AWS resources and in order to do so, I need to identify what are my requirements for: Number of CPU cores (maybe GPUs as well) (performs parallel processing) Amount of Memory ...
0
votes
0answers
9 views

How to setup keyboard switching in Tigervnc via Remmina Remote Desktop

I know neither which component is malfunctionning here nor what are full list of used components, so sorry for fuzzy question. I am running VNC server on a headless Ubuntu box with tigervncserver. ~/....
-1
votes
0answers
16 views

Error on docker-ce installation on Ubuntu 18.04

Docker engine stopped working on my desktop (I cannot remember if it had a kernel or docker update or maybe both). $ apt policy docker-compose docker-ce docker-compose: Installed: 1.17.1-2 ...
2
votes
0answers
49 views

Timeout to keep or reset settings when configuring displays

I'm using Ubuntu 18.04 on my Lenovo W540, and I want to connect three external displays to it through the "Ultra Dock" docking station, and not use the build-in display. According to the manual one ...
-4
votes
0answers
24 views

Ubuntu servers for web browser [closed]

If I am building a web browser, what is the ideal number of Ubuntu Linux servers to deploy in order to support high levels of traffic?
0
votes
1answer
18 views

Merlin Asuswrt Cifs Smb Share cannot mount

After installing Merlin 380.70 on my asus router I cannot mount my USB-connected smb shares via cifs. I keep getting varying mount errors: 6 & 22 are the most common. I've tried changing the smb ...
-1
votes
0answers
33 views

USB tethering with Android fails

I just recently noticed that I cannot connect to the internet using USB tethering on my Moto G6 phone. It just keeps attempting to connect, to no avail, when I plug my phone into my laptop and enable ...
0
votes
0answers
11 views

the following packages have unmet dependencies Ubuntu PPA

I have added the following PPA to Ubuntu 18.04.1 LTS sudo add-apt-repository ppa:linbit/linbit-drbd9-stack sudo apt-get update but now when trying to run sudo apt-get install drbd-dkms python-...
0
votes
0answers
21 views

updating ubuntu 16.04lts and installing wine? [closed]

I've got ubuntu 16.04 and it absolutely refuses to update. It keeps on telling me that certain files are not being used and as a result it can not be updated. They are all related to winehq. and or ...
1
vote
1answer
23 views

Open Port443 on Linux Ubuntu 12.04

i have a Linux Ubuntu 12.04.3 LTS with Elastic Search installed. the Elastic Search is configured to accept the local requests via HTTP. i have a php website on the same server. it was on port 80 but ...
1
vote
0answers
48 views

Ubuntu 18.04 Terribly slow on startup, then freezes completely [closed]

I am trying to understand the issue here, since it seems extremely strange altogether. How can I recover this system without completely reinstalling Ubuntu? Running 18.04 since it came out as a ...
0
votes
0answers
29 views

Installing older kernel for older hardware vs Installing old distro version

I have an old IBM Think Centre computer, with a 3Ghz Pentium IV Processor. I bought it as a refurbished computer. I used it as a webserver a few months but now I want to use it as my personal computer....
0
votes
1answer
16 views

Unable to locate package postgresql-server-dev?

I am trying to install the following packcage postgresql-server-dev-9.5. Using sudo apt-get install postgresql-server-dev-9.5 Now, after I run this command I get this error: Unable to locate ...
0
votes
3answers
32 views

Creating directories with sequential numbering

I am trying to create a sequence of identical directories with names like 'file001' in sequence from 1 to 512. I am running the following in the shell: for i in $(seq 001 512): do mkdir ...
1
vote
3answers
34 views

Get system to use another drive as /home after installation

I recently got a new laptop and have installed Ubuntu 18.04 on it. However, I have an issue: I do not have a lot of storage space. I want to add an new, larger internal drive to my laptop and use ...
1
vote
0answers
10 views

Set Sierra modem to packet switching via AT Command using ubuntu live CD

Lifebook E5440 has WWAN Modem Sierra EM8805 Multi SIM - Phone is occupied when Notebook is online i know this problem from lenovo notebooks Win10 doesnt let me set the config cause there is no com ...
0
votes
1answer
12 views

Invalid key bindings after upgrade to ubuntu 18.04 from 16.04

I need a shortcut Alt + 1 in Intellij IDEA but after Ubuntu upgrade it results into Alt + plus. However other numbers like Alt + 2 behave as expected. And hitting 1 indeed results into writing 1 in ...
0
votes
1answer
17 views

List files exceeding a certain size limit

I have an application structured in the form of a folder and several levels of subfolders. I want to list all the files within my application's folder that are equal to or larger than 300KiB. How do ...