Linux refers to the family of Unix-like computer operating systems using the Linux kernel. If your question is about a certain distribution only, use a more specific tag.

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Upstart: What is the first tracked PID w/o expect, but with script AND exec?

I have some Upstart configs used to start some foreground and blocking processes to run in the background as some kind of "daemons", especially those processes do not fork in any case. What I want is ...
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Input/Output error while installing Ubuntu 14.04

Hi there I was trying to restore my Dell Inspiron 3543 to factory state after accidentally loosing my data using Dell's factory image that I backed up when I first bought the laptop. I am facing ...
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Missing /grub/stage1 file

My situation goes like this. I have a SW-RAID1 setup on the server. Unforunately, it is only able to boot from device sda, without it. The server will not be able to boot up using device sdb. So after ...
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How to install Webcam driver for satellite P755D S5172 in Linux

Has any one configure the webcam under Fedora 22 or other linux version ? Please provide me with the steps Thanks
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How to install Webcam driver for satellite P755D S5172 in Windows 10

I have upgraded to Windows 10 - 64 Bits and my camera used to work in Windows 7 also 64 bits. I have tried using the official Windows 7 driver but no luck. Please advice me on How to install Webcam ...
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1answer
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Complete password- and key-less login for user using SSH

I want to use this plugin in my text editor to debug my HHVM application. Therefore I need a Linux user which is able to login via SSH both without password and without key authentication. How can I ...
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6 views

ffmpeg concatenate dynamic chunks (on-the fly)

The ffmpeg docs for concat lists the following way ffmpeg -f concat -i mylist.txt -c copy output The mylist.txt file contains file like file '/path/to/file1' file '/path/to/file2' file ...
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5 views

Start a gnome-terminal at a certain position, certain size and font size

Before I start I have looked around and cannot find a solution to my problem. You may think this is similar to other questions but please read all the way through. So what I want to do is write a ...
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1answer
11 views

Command line for Application alias in Mac OS X

I’m working on an installer for a project and I’ve written a post-install script that runs the executable for my project after it’s done. I want to know the command line argument—or if there is a ...
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10 views

Can't boot kali linux under grub2 (usb flash)

I split usb flash to three part: | For DATA | For Kali Linux | Persistence | Then i'm install grub on /dev/sdb2: sudo grub-install --no-floppy --root-directory=/mnt/linux /dev/sdb Write ...
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2answers
14 views

Opening port in iptables doesn't work

I add the following line before COMMIT in /etc/sysconfig/iptables: -A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT Then I use service iptables restart to restart iptables, but the ...
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23 views

After Upgrade: Pacman error 404

I've upgraded Arch Linux on my Raspberry, and now receiving following error every time I want to update my system with pacman -Syu: :: Synchronizing package databases... error: failed retrieving ...
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31 views

Linux : let process run per CPU

My server has 4 CPUs, and I'm parsing a file using grep. It's very slow using just one process. Is it possible to let run four processes using these 4 CPUs? How to do it ? Thanks.
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11 views

Closing open file without killing the process

I have java(yeah java...) application running on CentOS 7. After a while, there are many "deleted" files that bother me. for deleted files used(not the issue): lsof | grep "(deleted)" I found them ...
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1answer
19 views

Which shell script executes first at boot time?

Is there a standard entry point of the shell in Linux? For example I know that /etc/profile get executed at startup, but which is the script that gets executed first? If every distro does it ...
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8 views

How to compile phantomJs on a machine and then 'port' it on a other?

I've a Ubuntu 15.04 VPS with only 512MB of RAM. It's enough. No Problem. But I need to compile ("build") phantomJs, because there is no linux packages available. This require as much as 4GB of RAM, ...
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1answer
22 views

Virtual Machine or a Cloud Server without IP Address?

Is it possible to create a virtual machine or a cloud server on a dedicated server without IP address, for example with a hostname, or something else? The reason I'm asking this is because I want to ...
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15 views

Recover a Windows partition (under GRUB) and lost files

I am bringing this question and comments here, after feeling stackoverflow wasn't a place for me. I hope, at least, get some help here. Thank you very much indeed in advance. I really need a solution ...
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15 views

Error installing Safari for Windows on Ubuntu 15 through Wine

I'm trying to install Safari 5 for Windows in Ubuntu 15 through Wine (version 1.6.2). First I downloaded with wget: wget http://appldnld.apple.com/Safari5/041-5487.20120509.INU8B/SafariSetup.exe ...
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6 views

Libvpx install with Yasm in non default directory

i can not install libvpx because it is looking for Yasm in the default directory is there a way to tell it where Yasm is installed?
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1answer
15 views

Running a VPN inside a Linux VM, connect from host to encrypt traffic

Is it possible to run a VPN inside a Linux VM that a host would connect to in order to protect traffic on an unsecured network? Or is the traffic that the VM VPN tunnel sends going to be unencrypted ...
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1answer
11 views

New HDD mounting and partitioning difficulties

I have recently purchased and installed a brand new 8TB Seagate Archive HDD into my desktop computer, and, using the "Disks" program in Ubuntu, I created one 8TB NFTS partition named "MediaStorage" ...
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1answer
19 views

Linux Ubuntu Password reset

I used the passwd >username< on Ubuntu, and it gave me a list of options. How do I get past them? If I try using the options, it won't let me. Please help. Thanks!
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13 views

How can I get new messages in thunderbird via linux terminal?

I am trying to find a way of getting new messages from Mozilla Thunderbird without opening it.
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1answer
21 views

Problems running nmap export to file in linux as a cron job / bash script

I have a very simple bash script that runs nmap and exports the results to an xml file, and the uses scp to upload the file to a server: #!/bin/sh nmap -sn -oX /home/scan.xml 192.168.20.1-255 wait ...
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7 views

How to read an dar archive via LTO-6 tape

The /data folder was saved on tape with dar -R /data/ -c - | mbuffer -R 110M -P 90 -m 1G | dd of=/dev/nst0 bs=256k How can I test, list and extract it? I tried the following to test the archive ...
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How to disable creating device nodes of ldm disks in ubuntu?

Yesterday I've installed ubuntu 14.04 to my mother's home computer. That's really good deal, but she uses windows too to work with documents. This documents is placed on the Windows dynamic disks in ...
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18 views

Can't install deepin os

i'm trying to dual-boot windows 10 and deepin-os I have deepin-OS 2014.3.i made a boot able flash drive (8GB) and boot from the flash drive then a screen came up says to choose the language i click on ...
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1answer
10 views

Antergos Linux gnome3 powerbuttons disapeared

I installed Antergos Linux a few days ago (sdb5). I'm new to Linux so I just used most the defaults (changed Chrome to Firefox) and used sdb8 as /home and sdb9 as swap. I changed a few setting, ...
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3answers
26 views

How to scp-and-ssh with specifying host twice?

I frequently do this kind of thing: scp somefile me@host:/some/path ssh me@host Typing out me@host twice can be irksome. We (or at least bash) can grab that last argument with !:$, but that ...
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1answer
16 views

GParted created 30GB partition with 0.6-1.6GB usage

I have Linux Mint 17.2 Cinnamon. I intend to install 3 other Linux distros on my SSD, so I installed gparted 0.18 from the package manager. I realized that I cannot resize the root partition with ...
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12 views

Elementary os freya installer does not recognize existing OS and partitions

I have tried to install Elementary os freya on my laptop but in the partioning step it shows me a blank disk drive: 750 gb on unallocated space. when I start gparted (still in elementary os live usb) ...
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VLC playlist on Ubuntu 14.04

How to force VLC in Ubuntu to open recently played audio items in main window on startup, as most of players does by default? I checked all settings ten times, throughout web also, there is no ...
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6 views

Network IO throttling in cgroups

cgroups allow the user to manage the resource usages of processes or groups of processes. Block IO throttling is supported and works well. Why is it however that network IO throttling (specifying hard ...
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1answer
20 views

Make multiboot ISO with EFI support in windows

I currently have 3 ISOs. Windows 8.1 64-bit EFI ISO Debian 8 Network Install 64-bit Ubuntu 15.05 64-bit I would like to make it into a mutiple-distro linux install ISO. It needs to support EFI, ...
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9 views

DGND3700V2 as pass thru and WAP only

I have a DGND3700V2 but want to set up my linux box a router/webfilter etc, with time based internet access control based on mac address filtering to , ie make my router pass thru to the linux box but ...
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1answer
12 views

Not able to set wallpaper after reboot through ~/.fehbg in .xinitrc in i3 on Arch Linux

I'm trying to set my wallpaper using an automated script in .xinitrc rather than having to set it after every reboot by myself. I've used feh to set the wallpaper. And then used the generated .fehbg ...
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How to access KDE's camera:/ from terminal?

KDE's device notifier detects my GoPro Hero camera correctly and allows me to access its contents in dolphin through the URI camera:/ Is there a way to access the camera also from the command line? ...
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23 views

grep : how to do it as fast as possible

I have 30GB log files in .gz format. I'm using zgrep to search and calculate total number of user connection. What I do is to zgrep and take domain name from the first big .gz file, and search for ...
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1answer
72 views

Hacking attempt! Via Get request with Wget

This is a bit confusing, by the way I'm not a sysAd and only know a little bit about handling a linux. I'm running a website (LAMP) and hosting it in Digital Ocean. The server is centos 7 and ...
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1answer
32 views

grub rescue mode on kali linux (usb flash)

Trying to create Kali Linux live USB persistance. Split the usb like this: || first part FAT for data || second part FAT for LINUX || third part for persistance|| Then set "bootable" flag in gparted ...
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1answer
65 views

Can't install Kali Linux from USB, fails to find CD-ROM drive

I successfully made a live USB of the Kali Linux. When I boot from the USB it gives an option to install. I clicked on that option. At one point it was detecting and mounting CD-ROM drives. As I have ...
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1answer
18 views

Error messages when extracting a .tar.bz2 in Ubuntu

While extracting a .tar.bz2 file using the command tar xjf git.tar.bz2 I received error messages that shows Cannot hard link to and Cannot create symlink to What will be the reason ...
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1answer
55 views

PubkeyAcceptedKeyTypes and ssh-dsa key type

I'm trying to test the order in which keys are tried. One of the system's users is using DSA, so I'm trying to test it as an option. I'm getting a Bad key types. $ ssh -vv -p 1522 ...
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20 views

LVM space suddenly gone

I'm having issues with LVM on a Debian Jessie server. After adding a new SSD to the group storage I extended the volume, no issues were seen. After a power outage though, the server went offline for a ...
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1answer
17 views

What does “key_load_public: no such file or directory” mean?

I've been troubleshooting a PubkeyAuthentication-only issue. When I use verbose mode, I see a lot of "key_load_public: no such file or directory". Obviously, the keys exits on the filesystem, so that ...
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1answer
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How do I create a shortcut on Windows to launch Urxvt w/ Cygwin bash but also with certain options beforehand?

Confusing title, I know. Here's the problem: To launch Urxvt in such a way that my extensions work, I'd open up Cygwin and use export DISPLAY=:0 and then urxvt. If I launch urxvt just with urxvt then ...
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1answer
10 views

How can I install Google Chrome on Fedora without any issues?

I would like to install Google Chrome on Fedora. But I couldn't get the file I downloaded from Google's website to work, and there's too much confusing and sometimes even conflicting information about ...
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12 views

getting permission denied when uploading gfiles using php on ec2

I am trying to upload files using PHP on a Amazon t1.small instance but getting the following error: [ Tue Aug 25 22:04:25.163568 2015] [:error] [pid 6467] [client 120.56.186.247:2440] PHP Warning: ...
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1answer
40 views

Someone can help me find these 3 commands?

I’m making only one question to avoid spamming. I have 3 situations where I don't know which commands I should use. They are: List all files that have at least 3 letters on its name. Count how many ...