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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Is it possible to bring up the OS without any displays on an armStone A9? [duplicate]

How to bring up the operating system on an armStone A9 without any additional displays, but just via LAN cable? My network setup looks like this: Details: PC (machine 1): Ubuntu 14.04 LTS / ...
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Setting up an OpenVPN connection between my home network and a serve ro the internet

I want ot tunnel all local network traffic oven an OpneVPN connection. I have an ubuntu server configured on the internet (and it works from my laptop) and am now trying to configure the Raspberry to ...
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How to encrypt data in bitbucket without losing git diff tools?

Based on this question:encrypt files before sending them to cloud. considering openssl: For example when using openssl we can write the files fooenc.sh: #!/bin/sh openssl enc -bf -nopad -pass ...
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23 views

ZFS panic in debian

All my server's process relative to zfs are in 'D' state. Here is dmesg: [ 108.965838] BUG: unable to handle kernel NULL pointer dereference at 0000000000000048 [ 108.965993] IP: ...
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connection speed gets slow when using ip address but fast when using domain name

I have a web server and recently i changed the ISP for my home. after then, when i tried to connect my web site(admin pages) by ip address of the server, it takes considerably long time to load the ...
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42 views

How do I install Nix on a custom directory?

I have been trying to follow the Nix wiki to install Nix on a custom path /scratch/gopinath/nix. The /nix path is not accessible to me due to the restrictions on the system provided by my university. ...
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20 views

Access Websites & Modify Web Contents [closed]

so I'm given a website, and it requires me to use a token to get in. Is there any way I can do this on a normal web browser? I've been using curl -X GET in the Linux terminal. Also, how can I modify ...
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15 views

OpenVZ cotainer and NAT

I have been trying to days to solve my NAT issue with OpenVZ. I have used their guide on their website/wiki, however I just seem to be unable to get it to work. My Linux box is running on CentOS 6 ...
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14 views

Linux Mint: Switch Wacom pen sides

I am running Linux Mint 17 x64 on Cinnamon. I have a Lenovo Thinkpad X220 with tablet. My pen has something wrong with it (Windows and Linux) where the eraser and pen are flipped when it registers. ...
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1answer
34 views

Create custom PCM device in ALSA

How can I create custom PCM device with dmix-slave and use it in audacious without touching global PCM? Is it even possible? I tried miscellaneous configurations but no luck. ALSA asound.conf syntax ...
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2answers
50 views

NetworkManager icon on notification area is not present

I have noticed that recently the NetworkManager icon is not present on the notification area plugin on my XFCE panel after every fresh login; however, I am able to see its notifications and it in fact ...
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1answer
65 views

SSH on Raspberry Pi (OpenELEC) not working

I am not able to use SSH to connect to the Raspberry. Raspberry Pi B+ OpenELEC 5.0.8 (SSH enabled) wired eth0 (recognized during setup) 10.190.135.xxx IP address If I ping the said ...
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4answers
27 views

What issue exists when multiple lines of 'date' are used in bash?

I'm currently reading through a book on bash programming, Pro Bash Programming. At one chapter (Chapter 4) they ask what problem the following script has. I myself have no clue after reading through. ...
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25 views

Permission to execute denied for every file in /tmp:

When I try to execute any program from the /tmp directory, it shows me /tmp/file_name: Permission denied. The same error is shown when I simply enter /tmp. The file system for /tmp is ramfs. I've ...
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2answers
25 views

Flash not showing in /dev but I see it in lsusb

I have a USB flash drive. I formatted it some time ago, and an copy of my Bitcoin private keys were on it. I would like to recover it (it was formatted as Ext4, if I remember). After plugging the USB ...
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40 views

Merge multiple DVD ISO files of a Linux distro into single ISO for installation from USB

I have downloaded Oracle Linux 7 ISO files from Oracle website. There are 4 ISO files. V74844-01.iso (4.1 GB) V74845-01.iso (340 MB) V74846-01.iso (3.4 GB) V74847-01.iso (2.1 GB) Now I want to merge ...
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32 views

How do I disable devices to conserve power?

I run ArchLinux on a Lenovo G series and downloaded powertop and it says that USB bluetooth and "USB device: Lenovo EasyCamera" are drawing a lot of power. While it advised I implement these rule: ...
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14 views

How to run systemd's unit as soon as possible? - systemd

this is forked question from previous question: How to show own welcome message during boot with lolcat, Debian 8 (and systemd)? We have a working output of systemd's unit, that calls this script: ...
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10 views

Preserve formating and colors of output (created by my script) during boot - systemd

this is forked question from previous question: How to show own welcome message during boot with lolcat, Debian 8 (and systemd)? Now we have working output, but it deletes extra spaces and colors Is ...
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2answers
28 views

Modify a large file, then be able to rollback changes doing it (almost) inplace

I'm recovering data from a damaged 500GB disk drive. I'm copying data (ext4 partition) to a 500GB image file. The process is taking about 3 months of copying in total (yes, months). So I'm using dd ...
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1answer
23 views

KODI remote isn't working

I'm trying to correctly configure KORE, the official Kodi Remote app for Android, but I'm unable to do so. My copy of Kodi is installed on a laptop with openSUSE as a base system, and both it and my ...
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1answer
28 views

How can my home server accept and reply to connections from the Internet when OpenVPN client is running?

I have a headless home server running Ubuntu Server 12.04. A 3rd party website (to which I'm subscribed) periodically sends commands to a daemon on my home server which in turn responds to the 3rd ...
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2answers
44 views

Fedora 21 reports root file system as 100% full, cannot use yum

When I try to use a yum command like yum update the terminal yields this: Error: Insufficient space in download directory /var/cache/yum/fedora * free 0 * needed 100 k When I ...
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20 views

LVM: “Volume group is not consistent” and “Incorrect metadata area header” but volume still mountable

I'm on Ubuntu 14.04 with a volume group that has 4 disks in it: Incorrect metadata area header checksum on /dev/sde1 at offset 4096 Incorrect metadata area header checksum on /dev/sde1 at offset ...
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29 views

Lightweight linux preboot environment?

I was wondering if there was any way to setup a light, low resource linux environment that'll have basic features like a web browser but can boot into a full linux distro or Windows if I need a more ...
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2answers
17 views

How to add the filepath to a specified line of a file using bash script?

I have the following bash code: echo "Enter an input path" read -e input_path OLDTEXT="\put(0,0){\includegraphics{/" NEWTEXT="\put(0,0){\includegraphics{$input_path/" find . ...
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2answers
36 views

Can I get Emacs to save a local copy when editing a remote file?

I know I can edit a remote file over SSH by opening a file path of the form /ssh:user@host:/path/to/file. However, right now I'm working on a kernel module in a Linux VM. Since my kernel module might ...
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0answers
15 views

Can't connect to network on Debian 7

During the install of Debian 7, I entered the static IP of my unmanaged network with subnet 10.0.0.1/24 and was able to install the OS and download updates from the repo without a problem. Once the ...
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9 views

Is a btrfs RAID1 mountable if the added device isn't available/offline/failed/degraded?

Assume I created a RAID1 with btrfs's functions (btrfs device and btrfs balance subcommands instead of mdadm) like so: btrfs device add /dev/sdxZ /dev/sdxY btrfs balance start -dconvert=raid1 ...
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1answer
132 views

Are there any good reasons for halting system without cutting power?

Are there any good reasons to halt a system without switching off power to the hardware? I mean using the halt command without using the -p switch. I haven’t been able to find an answer on the ...
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Where do I edit the location to search for modulefiles?

I am using fedora and modules was installed by default. module avail lists locations /usr/share/Modules/modulefiles and /etc/modulefiles. I am installing my software in /apps and would like to have my ...
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1answer
42 views

Route traffic through google servers or google proxy

I am using Kali Linux on a 384kbps internet. But when I download from google server eg. from google drive or gmail, I get download speeds upto 3mbps. Our ISP has allowed unlimited bandwidth only for ...
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1answer
31 views

How to select files with spaces in their name in a terminal?

When using gnome-terminal which is the default on Linux Mint, I can select files using a double click. For example: user@hostname $> ls 1.file.name 2-file-name 3 file name with spaces This ...
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2answers
34 views

Transparently split file | Hardlink to file part

I have really big file (TrueCrypt container) and I want to save it in some cloud, but it has constraint on file size, limiting to 2 Gb, also it has some tool to sync directory. The idea is to create ...
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1answer
17 views

Some characters in zsh don't show until the key is released

When inputting specific characters in zsh shell (in my case e and ;) they don't show up immediately after pressing the key. Instead they only show up a short time after releasing the key. When these ...
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1answer
26 views

Synology ssh port receiving too many intrusion attacks, how to ban systematically?

I have a synology NAS which I leave at home, and leave it open so I can access it remotely from the office. One of the useful things to do is enable the ssh port so I can access it with my terminal. ...
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1answer
35 views

Older History of commands linux

I want to check history of commands on my linux server that dates 1month and 4 days old, but the history is showing up to 1 month only (I was late checking it earlier). I know the ' History ' command ...
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23 views

Decrypt SSL Data in wireshark

In all the tutorials which I saw in web, they pointed me to add key file in Edit->Prefereces->Protocols->SSL->SSL key file but there is no such SSL key file in version I use. Can somebody guide how ...
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12 views

Connecting to the Host and Internet from an Internal Network in VirtualBox

In order to simulate a network, I have 3 VMs set up in VirtualBox called VM1, VM2 and VM3. They each have 2 network interfaces all of which can ping the others at the moment. The Network interfaces ...
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2answers
47 views

can we do the full disk encryption of a already installed Linux machine?

I need some information regarding any possibility to do full disk encryption for a already installed Linux system(e.g centOS or Ubuntu). Is there any default mechanism for FDE present in Linux like ...
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1answer
53 views

Unable to boot Ubuntu 14.10 on Toshiba Satellite C55D with UEFI boot mode

I am trying to get Ubuntu 14.10 to boot on my Toshiba Satellite C55D-B5212. I have UEFI boot mode and Secure Boot enabled. The Ubuntu live USB stick booted without issues and the install seemed to ...
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17 views

Windows 8 partition safe to delete

I'm fairly new to Windows since XP. After Windows XP, I happily moved to Linux. Now, I'm back and am looking to dual boot a new Windows 8 machine and am a little disoriented on the new partition ...
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2answers
60 views

Parse file from certain line onwards in bash on Linux

I have a CSV file containing the following registers: Name,Phone,Country John,N/A,USA Max,N/A,USA Name,Color,Size John,Blue,M Max,Red,S How can I read only the registers from Name,Color,Size and ...
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1answer
8 views

Debian user desktop not working on TightVnc

I have a BBB with tighvncserver on it. Iam trying to connect from my windows pc via tightvnc to the beagleboard. With root its working fine. The desktop displays correctly. See attached Screenshot ...
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DD-WRT: /tmp folder permissions

After making a simple hello world OpenWRT package I installed it to the /tmp folder on the dd-wrt device. The program shows up in ls /tmp but when I try to execute it, it shows me /tmp/helloworld: ...
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1answer
13 views

How to rsync a folder and subfolders using filenames only?

I would like to synchronize files from the folder /media/alex/Disk1/Movies to the folder named /media/alex/Disk2/Movies. I want to copy each file from /media/alex/Disk1/Movies or a subdirectory to the ...
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11 views

VMware Workstation - Linux/gnome screen saver locking of guest and host

I've got some RHEL6 machines that run VMware Workstation 11 on them. The host and the guest are required to have a screensaver enable after 15min of inactivity that goes to a lock screen. My users ...
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1answer
24 views

Kernel Thread that won't exit, Load Average +1

So I have a new server that is up and running with Centos 6, and the load average is stuck hovering around 1, even when the machine is nearly idle. I reviewed the process table and found this ...
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RHEL upgrade makes AIDE to run slower

ALL, For our product we upgraded from RHEL 5 to RHEL 6. Unfortunately AIDE tool that we use for intrusion detection started to slow down it's scan for about 2-2.5 times. I checked and the ...
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1answer
28 views

the difference with bitrate and frame rate with ffmpeg

I am working on the project that compressed live video with ffmpeg. I want to know what is the difference between -b 2500k(bitrate) and -r 25 (frame rate)? Is the any relation?