Ubuntu is a Linux distribution with an emphasis on ease of use and installation. Note that http://askubuntu.com is specifically dedicated to Ubuntu questions.

learn more… | top users | synonyms (1)

4
votes
4answers
345 views

Remove a directory from inside using the command line interface [duplicate]

Imaging the next simple file structure within the /home/user/ directory: /home/user |--dir0 |--dir1 |--file1 My current directory is 'dir1' and I remove the ...
2
votes
1answer
130 views

UTF-8 not working over SSH

I have configured my terminal on OSX to show emoji properly. When I open up a terminal I can type and see emoji properly. My locale settings for OSX are shown below. When I start a tmux session it ...
2
votes
2answers
142 views

SFTP clients uploading files with too restrictive rights

I have the following setup: Ubuntu 14.4 server offering SFTP service in a front-end area. External clients have the ability to upload files. A back-end process (on another server) tracks uploaded ...
1
vote
2answers
58 views

does dos based laptop works fine with linux distro [closed]

Which laptop is most compatible with Linux? i checked this link but i need to know something else as below: i need to purchase a laptop which will support linux fully when i will install say fedora ...
1
vote
0answers
45 views

Won't standby, usb_bluetooth refusing to freeze

I am running Linux Mint 17.1 Rebecca on a Yoga Pro laptop. The laptop will only go into standby once and then will not until it is restarted. When attempting to standby it will freeze for 20 seconds ...
2
votes
3answers
7k views

How do I get my wireless USB mouse working

My wireless USB mouse is not plugging and playing. This is my first time using linux (Ubuntu 12.04) and I'm trying to get a development environment going to learn to use the shell, Python, and other ...
1
vote
2answers
51 views

Ubuntu reboots at startup as default runlevel is set to 6

Someone has changed my default runlevel to 6 so whenever I start Ubuntu it reboots.. Can anyone help me by suggesting some solution how to change my default runlevel?
1
vote
1answer
54 views

How to revert list of email by date using mutt?

I use the office365 mutt config connect my Microsoft Office 365 email account, and that works fine. One issue I am having is that I want to reverse the email view so that I see the most recent ones ...
2
votes
1answer
662 views

install php7 alongside php5 on Ubuntu

I have installed php 5 as my main version on Ubuntu 15.04 which I use to develop my current projects. I want to install php 7 alongside php 5 is there a way to install both?
11
votes
4answers
43k views

How do I find out why cron is not running my jobs?

I'm using Ubuntu 14.04, and the cron daemon is running: # ps ax | grep cron 822 ? Ss 0:00 cron but it is not executing any jobs. I was previously getting entries in /var/log/syslog such ...
0
votes
0answers
161 views

Dual boot windows 10 on mSATA and keep ubuntu on the HDD, on a Dell Inspiron 17r 5720

I currently am running ubuntu 14.04 on my Dell Inspiron 17r 5720, on a 1th HDD. It's a great computer, but I really could use another storage drive, and solid state drive, and windows OS( for school ...
1
vote
0answers
23 views

how to select a budget laptop for linux say fedora /ubuntu [duplicate]

i need to purchase a laptop which will support linux fully. my question:->what points should i consider laptop for linux before buying it say should it come with os /no os/specific os as i will ...
33
votes
3answers
140k views

“Input/output error” when accessing a directory

I want to list and remove the content of a directory on a removable hard drive. But I have experienced "Input/output error": $ rm pic -R rm: cannot remove `pic/60.jpg': Input/output error rm: cannot ...
5
votes
2answers
32k views

Suddenly, I Can't login with correct password (greeter & tty)

This might be a duplicate of other password related questions but it's somehow eccentric. I have 3 accounts in my Ubuntu 12.10 system (one standard and two administrators). One of the administrator ...
0
votes
2answers
117 views

Ubuntu Minimal of less than 100 MB [closed]

I want a minimal Ubuntu of less than 100 MB after installation!! Ubuntu with only terminal no GUI!!! Actually i want to install a terminal based Ubuntu with no GUI as my virtual machine Can anybody ...
0
votes
2answers
106 views

Warning while Booting into Ubuntu

Recently, I installed Kali Linux 2.0 as a third OS on my Dell Latitude E7240. I used Unetbootin to make a bootable USB of Kali Linux. When I booted from it, it gave me options I wasn't used to. I ...
1
vote
1answer
131 views

Chromium deps install problem on libgl1-mesa-glx:i386

everyone I'm trying to build chromium on Ubuntu 14.04.3 in my Virtualbox and get stuck at installing deps running install-build-deps.sh. The problem lies in package libgl1-mesa-glx:i386. Here's the ...
1
vote
1answer
111 views

iptables mangle table with custom chain

I create a new chain in mangle table: $IPTABLES -N newchain -t mangle After that all the 80's port packets I put to that new chain: $IPTABLES -t mangle -A PREROUTING -i eth1 -p tcp --dport 80 -j ...
-2
votes
1answer
418 views

Graphic card driver issues Ubuntu 14.04 [closed]

I have a Thinkpad T400 with a ATI Mobility Radeon HD 3470. It appears that the basic installation of my Ubuntu does not "fully use" the ATI graphics card. From what I have read, the fglrx driver does ...
1
vote
0answers
32 views

Why can't I view a folder in the Files navigator, when permissions are 766, owned by me?

I have the following mounted drive: caleb@ubuntu-box:/media/data/plex$ ll total 20 drwxrwxrw- 5 caleb caleb 4096 Jul 11 13:29 ./ drwx------ 3 caleb caleb 4096 Jul 10 19:48 ../ drwxrwxrw- 4 caleb ...
1
vote
3answers
123 views

Can I install Ubuntu and mint side by side with Windows 10?

I have a lenovo laptop with 5th gen Intel i5 and 4gb RAM. Its running on Windows 10. Being tech savvy I couldn't resist myself from using Linux based OS. With all the research I did I finally came ...
2
votes
1answer
195 views

hcidump not acquiring data packets in Ubuntu 14.04?

I am trying to communicate between two bluetooth modules in two different Ubuntu 14.04 VMs. While the data is transmitted and received perfectly, the hcidump is not able to acquire that data. I also ...
1
vote
1answer
22 views

How to view embedded PDFs on a website in Ubuntu 14.04?

I'm using Ubuntu 14.04 and have tried 3 different browsers (Chrome, Firefox, Chromium) to open an embedded pdf file ("application/pdf") and none of them seem to work. On Chrome I've installed the ...
4
votes
2answers
637 views

ssh, sudo, then download?

I got a server A, it has three users on it. I need to download a folder's 70 gigs of content into server B. The server only has 90 gigs of space, so compressing, then transferring isn't an option. In ...
12
votes
1answer
349 views

Partitioning done incorrectly?

Long story short, we had issues installing linux on this system. It magically decided to work, but now I'm unsure about the hard drive partitioning. One hard drive has linux installed on it and the ...
1
vote
0answers
42 views

Using xampp on ubuntu

I have installed XAMPP on Ubuntu and trying to run a project developed on Windows on Ubuntu. I am getting 404 page not found permission. I guess it is due to permissions and ownership but I can't ...
3
votes
3answers
269 views

SOLVED: How can i see which process hangs my Banana-pi for few seconds every couple of minutes?

answer: I'll post the answer before the problem. I fixed my "freezes" by turning autoneg of (ethtool -s eth0 duplex full autoneg off). how i found this: every time after a freeze, monitoring disk I/O ...
0
votes
0answers
73 views

Ubuntu Configuring static route with IPV6

I am having trouble getting ECE4110Host1 to ping ECE4110Host2 via static routing. I did it in IPV4 but not sure why I cant get it in IPV6. In the ECE4110Host1 command I enter: sudo ip -6 route ...
2
votes
1answer
148 views

How do I crash Ubuntu Linux 14.04 LTS deliberately?

I'm trying to crash an instance on AWS so that I can simulate what happens when it gets 'stuck'. I tried the top suggestions here How to cause kernel panic with a single command? but unfortunately ...
1
vote
1answer
8k views

Set environment variable $PATH globally on Ubuntu 14.04

I am trying to add environment path variable of composer globally. I've tried many ways but it does not seem to work. I searched other posts, but did not find matching answers. I am trying to ...
2
votes
1answer
66 views

Network interfaces up order, ipv6 tunnel problem

I have a ipv6 tunnel interface, that is using my network connection on eth0. when I turn on my system something messes up the things and I have no ipv6 connectivity. The system is Ubuntu 14.04 server ...
1
vote
1answer
1k views

hdmi not showing up in xrandr

Everything used to work until recently. Now, whenever I connect my HDMI monitor to my laptop nothing happens. Running xrandr doesn't show the HDMI output. Can anyone help out? I've been trying to fix ...
1
vote
0answers
146 views

Bridged Networking Problem with VirtualBox

I'm running an Ubuntu Linux guest in VirtualBox on a Mac host running OS X EL Capitan 10.11, and the guest isn't connecting to the host's Wi-Fi. It's set to bridged networking, using the regular en0 ...
-1
votes
1answer
79 views

Error while installing wget and unzip

I am trying to install wget and unzip on an Ubuntu machine. But I am facing the issue shown in the screenshot (dependency problems). sudo apt-get install wget unzip
1
vote
0answers
84 views

GDM is flashing and I can't login

I recently switched to Ubuntu GNOME from Windows and am very inexperienced. I was using Ubuntu fine for a while. But this morning I had trouble signing in because my login prompt continuously ...
6
votes
3answers
3k views

Get diff changes between original files installed with apt and current files

I installed php5-fpm package using apt; then I made some changes to the PHP configuration files. Now I would get the diffs between the original files versions (the ones of the package installed) and ...
4
votes
1answer
339 views

Ubuntu 15.04 PlayOnLinux Evernote can't edit notes

Just installed Ubuntu 15.04 (yes, I know that I'm a slowpoke). On Ubuntu 14.10 I was using Evernote via POL and everything was OK. Now I have a weird problem. Everything is synced. I can see a list ...
1
vote
1answer
161 views

How do I disable the usb optical mouse from Ubuntu 14.04 terminal?

I would like to disable a specific usb device (mouse) via Ubuntu Terminal. I have Ubuntu 14.04 and I tried this method and this method but both do not work with kernel 3.x. Any suggestion?
1
vote
0answers
37 views

Flash drive fat32 partition overwritten by Linux Mint 17.1 image writer - need to recover [closed]

Ah Yeah...Mint 17.2 image is written onto a Kingston flash drive (8GB) and overwritten a fat32 partition. I can take You to the moon if You tell Me that, those files aren't lost ones. ///the image ...
1
vote
1answer
93 views

Postfix is not releasing email

I got a Ubuntu 14.04 server and I am testing Postfix. My /var partition got full at a certain moment, but I could still send some emails (locally and to a different host too). Postfix accepted for ...
4
votes
3answers
38 views

Two different lists of installed packages

I'm trying to get an authoritative list of installed packages in order to find the explicitly installed ones as is done here. This command gives me one list aptitude search '~i !~M' -F '%p' ...
1
vote
1answer
319 views

Mouse and keyboard not working on Windows 8.1 after Ubuntu dual boot?

After dual booting my system with Ubuntu, my mouse and keyboard no longer work, in Windows 8.1. The light on the peripherals glows, so I know they are on, however they are just not responding. In the ...
0
votes
0answers
131 views

ubuntu 15.04 problem with typing password to decrypt the disk

I have a stupid problem after installation of ubuntu15.04 on lenovo e450. I install ubuntu with full-encryption disk option, but I have a problem. I cannot type password to this password box, but when ...
0
votes
0answers
65 views

Raspberry Pi OctoPrint server forwarding to Ubuntu VPS

I have a Raspberry Pi web server via OctoPrint which I have opened ports for to my home router so I can control my printer from anywhere. My biggest problem is my ISP keeps changing my IP address ...
2
votes
2answers
207 views

is a script a program being run under the current shell or a child shell?

I am confused with regards to the following - if I execute a script or run a program in the current shell by typing on its name it searches in the $PATH variable, to find the location of the ...
2
votes
0answers
78 views

How should I make use of Network Namespaces to access two IDENTICAL WiFi AP?

I encounter a problem when I'm trying to use a Ubuntu laptop computer to connect to two identical WiFi AP in the same time. These two AP are actually not normal AP like broadband routers, but Sony ...
0
votes
1answer
123 views

Setting up MEAN webserver in Ubuntu 14.04 vm

I'm new to the world of web servers. My lab gave me a url with a Ubuntu 14.04 virtual machine. I sorted out enough of what I needed to do to SSH in, install all relevant libraries, and clone my code ...
0
votes
0answers
72 views

program “killed” as soon as it runs

Ubuntu 12.04 I have success with make, and output a program name algo. When I type ./algo,the terminal just directly shows 'killed' And I searched the var/log/message or syslog kern.log. I don't ...
0
votes
0answers
28 views

Add new HDD to Azure VM and set RAID 0

I need to attach some hard drives to my Ubuntu Azure VM and enable RAID 0 for them to improve the performance. The new storage space will be under /home/director (for storing my host data). I have ...
0
votes
1answer
191 views

How to use grep when file does not contain the string

In my bash script I'm trying to print a line if a certain string does not exist in a file. if grep -q "$user2" /etc/passwd; then echo "User does exist!!" This is how I wrote it if I wanted the ...