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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Curl post form and get result

I found this website http://www.fonefinder.net/findome.php , that locates phone provider by number (ex: http://www.fonefinder.net/findome.php?npa=562&nxx=866&thoublock=1666) shows VERIZON ...
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Slow internet using Arch Linux

After a week or so of using Arch Linux I cant access the Internet. It takes around 5 mins to load Google (most of the other websites just give me a timeout), pacman’s downloading speed range between ...
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2k views

OpenVPN on Debian 6 failed to start

I configured openvpn on my Deabian 6 VPS (using OpenVZ) several times but always stuck on "Starting virtual private network daemon: client server failed!" The syslog indicates, that there seems to be ...
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How to get total records affected in database: A shell script

I have written a shell script to update the records on database server. The query.sql file contains variable number(almost 600 to 800)of insert queries. As I am running the script, it runs fine and ...
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Unresolvable broken dependencies, none of 'apt-get' commands works

Before I explain the problem, I should say that I have tried all other answers to similar questions and troubleshootings around the Internet, and none of them works. To be more specific all apt-get ...
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9 views

Wi-Fi signal strength in OpenWRT

Is there a way to retrieve signal strengths on all the devices connected in a wireless network in OpenWRT? I want to check signal strength of devices connected to the router. My router has OpenWRT ...
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2answers
162 views

Why does i3 Window Manager make a blank section?

Once in a while, my i3 Window Manager makes a blank tile that only shows the desktop background. I don't know what causes this. Maybe it's a keystroke I am inadvertently making. It ruins the whole ...
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1answer
3k views

With Centos 7 as a Virtualbox guest on a Mac Host, how can I change the screen resolution of the console / command line?

I am using the minimum install of CentOS 7 with command line access only (no graphic support installed). After spending hours reading online about editing grub files, installing guest additions, and ...
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1answer
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Unable to view contents of directory on Linux server via FTP, or using “dir” via shell, able to find files within directory nonetheless

I have a directory on my Linux (CentOS) server which serves as a repository for uploaded files from a webpage. I noticed I was not able to open the file using Filezilla via FTP (was formerly able ...
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14 views

linux crash graphics go crazy

Frequently at boot my computer does this. It is extremely frustrating as I have to restart it many times till it works normally. Any ideas are greatly appreciated. system specifications ubuntu ...
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1answer
22 views

Is mounting a filesystem as read-only enough to prevent FS/data corruption in case of power loss?

I have a home-made HTPC setup. I often plug and unplug USB drives on it. I was wondering whether just unplugging these drives without umounting them first would be alright considering that they are ...
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3answers
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How to make a local tar file of a remote directory

This link describes how to copy tarred files to minimise the amount of date sent over the network. I am trying to do something slightly different. I have a number of remote files on different ...
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need to recover data from bcache device

I have had some problems with a bcache device, that ended up in: bcache-super-show /dev/bcache0: sb.magic bad magic invalid superblock(bad magic) I need to save the data that was on that device, I ...
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How to encrypt a file or directory in Linux?

What's the most popular command to do such things as encrypting a file or directory in terminal in Linux?
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1answer
25 views

Why an OS has same name on different achitectures?

What is the similarity in running a same OS (like Linux) on different architectures? I mean, we cannot run Linux x86 apps on Linux ARM. And even the OS itself is constructed differently for different ...
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Wifi hotspot, what's wrong with this redirection structure/code?

My linux machine provides a Wifi access point (made with hostapd package). Interface wlan0 is thus accessible by machines around. When clients webbrowses my machine, I would like any IP/url to be ...
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1answer
20 views

Keeping data separate from OS

Is there a simple way to configure windows/linux/mac so that the OS is installed on a separate HDD/SSD to all the user data which is stored on one or more drives?My motivations are: Quick and easy ...
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1answer
8 views

I am trying to run a cronjob but it is not executing correctly

I have the following line in my crontab */1 * * * * /usr/bin/screen -S lftp /bin/bash /media/c419d280-9833-4432-b5a5-520f040b87ec/NASDataDisk1/Other/autolftp-sftp.sh >> ...
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1answer
14 views

What is MASQUERADE made for?

A simple redirection is used on my server, with iptables rules : $ iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination 13.37.42.1:80 $ iptables -t nat -A POSTROUTING -j ...
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GNU ddrescue imaging of failing hard drive is extremely slow

My friend has a (nearly full) failing 1 TB Western Digital My Passport. It will only occasionally mount on my MacBook, and refuses outright to mount on my Ubuntu box. I'm trying to use GNU ddrescue ...
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2answers
85 views

How to redirect LAN traffic to a L2TP/IPsec client connection on a gateway?

I established a L2TP/IPsec client connection on the gateway, and I'm trying to redirect my host on LAN to use this connection when accessing the Internet. Here is the network topology. This is my ...
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The conflict spread: http://archive.ualinux.com maya Release (expected maya, but received precise) [on hold]

The conflict spread: The conflict spread: http://archive.ualinux.com maya Release (expected maya, but received precise) broccoli@K53SV ~ $ ls 123.txt Playlist.pls ...
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2answers
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What command lists the files created in a specific month and is readable for the owner?

I am supposed to find the command that lists all the files created in September and are readable for the owner. Also explain how the command works. I know I'm supposed to use ls -l and I will ...
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2answers
125 views

Cannot load tp_smapi module on thinkpad x60

I have an old thinkpad x60 running debian. Recently, I brought a new battery, to check the stats(manufacture-data, first use etc ..) I installed a common program called tlp on the machine. But It ...
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ipTables, how to block all services requesrs on port 80 for an IP?

On a linux server/router, I want to block port 80 only for one IP (example : 1.2.3.4 ) I have been given this example : ### Block Incoming Port Requests (BLOCK PORT) # To block port 80 only for an ip ...
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5answers
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sending one key stroke to two windows (Ubuntu)

I'm running Ubuntu Linux. I have two open Terminal windows running side by side. I'm looking to be able to hit the enter key once, and have that key stroke sent to both windows. (What I'm doing is ...
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How do I set systemwide connection over a proxy server

My Internet access is through a proxy, my OS is Debian 8, each application must configure it to use the proxy, but there are some that are a headache to make it work with a proxy, then my question is: ...
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13 views

fast encrypted disk on raspberry pi

I need to have a trivially encrypted disk on my raspberry-based server. As far as I know, Raspberry Pi doesn't have any hardware AES encryption. That means, the standard disk encryptions are awfully ...
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2answers
14 views

How to chroot with sshd in a directory not owned by root?

I followed this, to restrict user to a determinate directory and it works perfectly, but i need to chroot a user in a directory that is /dir1/dir2/dir3/dir4 Suppose dir1 is owned by root, dir2 by ...
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8 views

Logging signal strength in router logs

how to know the client(device) signal strength that connected to WiFi in OpenWrt platform? Is it possible to to log signal strength of devices connected to Wi-Fi access point? Actually not even just ...
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0answers
16 views

Group permission doesn't work for group

I'm trying to give me permissions to write on a file owned by www-data me@home $ touch my_tralala && chmod 660 my_tralala me@home $ sudo chown www-data:www-data my_tralala me@home $ groups me ...
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Pycharm on Linux: Scrolling has become suddenly very sluggish

I've a Linux machine with 4gb of RAM and 2 VCPUs on VirtualBox running on a Windows 7 host (Core i7 with 16 gigs of RAM). The Linux VM is my workspace for a project. I run Mobaxterm on my Windows ...
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cannot connect with Remote desktop in windows 8.1 using RDP file

I am having difficultie connecting to a remote computer using my dell notebook with windows 8.1 I have connected to this computer many times before using Linux (Remmina and/or KRDC) without any ...
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Screen session freezes, output stops, but process continues running. Reclaiming screen possible?

On a remote server, I have one screen session running. Inside the screen session, I have 10 windows, each of which runs a separate process (issued via the cron). We have this setup since we want to be ...
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6answers
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How to access a network folder in Ubuntu using the terminal

I am new to Ubuntu(and Linux for that matter) and I am trying to access files using the terminal. The network folder is on my Desktop, but when I go to the Desktop folder via the terminal, the ...
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Change Linux console screen blanking behavior

How do I change the screen blanking behavior on Linux virtual terminals? For example, if I switch to a VT from X, login, and leave the system alone for 5 minutes or so, the screen will blank like a ...
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2answers
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Where has all my memory gone?

I have a linux server that keeps using up all its memory and I can't see what is using it. Running top gives the following response: Tasks: 103 total, 1 running, 102 sleeping, 0 stopped, 0 ...
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Is there a way to install Arch Linux on a separate drive via Windows?

I want to install Arch Linux on a new SSD I've bought however I don't have any discs or external drives to install it from. Is it possible to install Arch Linux via Windows 7 which is running on a ...
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Automatically fit document on smaller paper size (LibreOffice Writer)

The whole point of the system of European paper sizes is that all have exactly the same ratio. So, theoretically, you can print an A3 document on an A4 sheet and it will not be distorted — it will ...
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1answer
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Can phpMyAdmin be used to connect to a remote database?

I recently read this tutorial, which explains how one can easily reconfigure a local installation of phpMyAdmin to connect to a remote database. The functionality seems to be supported, but not ...
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1answer
15 views

why doesn't strace work on gcc -c

>echo > foobar.c >strace gcc -c foobar.c 2>&1 | grep foobar.o > (nothing) - foobar.o is being written obviously, but I don't see it on strace. Why?
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ubuntu 14.04 cannot “apt-get update” ok

I am running ubuntu 14.04. Recently I am not able to update the apt source. When I typed "sudo apt-get update", the process is very very slow, in hours that not proceed. And the result is all "Ign" or ...
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233 views

Webcam is only recognized by some software

I have a webcam that works fine in software such as camorama and cheese. However, I cannot use it in websites that allow you to use a webcam (it's not recognized). I tested it with: Chromium 34.0 ...
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1answer
34 views

Why have a single partition on an external hard drive?

I have several external hard drives that I've formatted (in ext4) without creating a partition table and a partition first. I formatted the raw block devices, and they work fine. I only want one ...
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How to make Kalibrate-rtl and rtlsdr-scanner work with my gsm modem?

How to make Kalibrate-rtl and rtlsdr-scanner work with my gsm modem? My modem is a D-link HSUPA 3.75g dwm-156 . root@kali:~# kal -s GSM900 -v No supported devices found. I'm grateful for any ...
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1answer
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Wirelss card not being detected in backtrack 5

I just installed backtrack 5 and I am unable to detect my wireless card. iwconfig doesn't list my interface. I can see that the hardware is present in lspci -vnn (see below) but I can't get the ...
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Ubuntu Boot (Panic) Error

![enter image description here][1]I recently did a update on my machine and ever since Ubuntu will not boot properly. I get an error message and I have to go into recovery mode in order to start the ...
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2answers
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Why are Fedora partitions not listed under the extended partition?

I recently installed Fedora 22 on a desktop PC. I wanted to install it on a logical partition. During installation, in the Anaconda installation wizard, I chose to create a 16 GiB logical partition as ...
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2answers
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Get rid of null character in vim variable?

I'm trying to fix vim's Backspace behavior on one of the platforms I use. I got the name of this platform (call it bad_platform) from the system's get_platform command. Following the advice in :help ...
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Win XP, Win 8 and Linux in Grub2

For the following setup: kellogs@kellogs-PC:~ > sudo fdisk -l [sudo] password for kellogs: omitting empty partition (5) Disk /dev/sda: 160.0 GB, 160040803840 bytes 255 heads, 63 sectors/track, ...