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

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112 views

Only Allow Connection to Certain BSSID

There are two networks with the same SSID. I want to ensure I only connect to the access point and never connect to the other one. How can I allow AND prevent connection to wireless networks based on ...
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1answer
27 views

Lost Directory structure

Made a stupid typo and moved all my directories into cyberspace and have no idea where they went I accidentally moved them into /etc/Public but when I tried to move them to ~/Public they are no way to ...
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55 views

ssh tunneling on multi systems

I would like to ssh-forward id_rsa keys from localhost through server 1 to server 2 On the localhost computer I have the id_rsa keys which get added to ssh-agent for forwarding to a remote server. ...
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93 views

Reach ssh server behind a router on embedded system using established socket connection

I have developed an embedded application running linux to do remote I/O control. The application open a socket connection to my server to communicate, periodically, the state of the I/O and getting ...
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1answer
938 views

How to add a prefix to every row of a particular column in a csv file via command line on linux

So basically i am trying to achieve the following.    File before editing.  column-1,   column-2,  column-3,  column-4,  column-5 Row-1-c1,  ...
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81 views

How to run headless VirtualBox in another GUI terminal in Linux?

I want to run Windows and Linux simultaneously through Virtualbox with Linux as a host. Having desktop environment running on GUI terminal (ctrl+alt+f7) I want to run from the first terminal (ctrl+alt+...
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43 views

One database on Linux and Windows

I want to use MySQL database on my Ubuntu installation as of Windows 7, It should be dynamically, I mean when I change data in database on Ubuntu it should save also on Windows too. I've already ...
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1answer
766 views

Remote Packet Capture using Wireshark

Well The scenario is that I have a Windows machine(at home) and a Linux box running headless Ubuntu server(without GUI) on a remote location. I got Wireshark installed on my windows machine, and ...
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1answer
595 views

Use router as external high powered Wi-Fi adapter

I need a powerful external Wi-Fi adapter for a couple of days. I heard that some types of router support this mode, allowing me to connect the router to my notebook and just use it as an external Wi-...
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1answer
17 views

Move child folders into a different folder

I am new to UNIX, and I am trying to write a shell script that would move all folders that are older than a day in log archive directory into another folder. Below is the command I am using for doing ...
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1answer
264 views

(Arch)Linux board with dual ethernet

I am looking for a Linux board with the following requirements: 2 ethernet ports (helpful, but only 1 required) 2 USB ports SDXC support (for SD/MicroSD) WiFi (>25 concurrent users ideally) HDMI or ...
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579 views

Unable to SSH into remote server with defined user & keyfile

This one is just bugging me, I can ssh in as USER when I am using USER account ie: USER@SERVER$ ssh -v USER@ip-SERVER2 logs in just fine if I try and use USER2@SERVER$ ssh -v USER@ip-SERVER2 ...
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439 views

Routing Traffic With OpenVPN

Few minutes ago i configured my VPN server, and actually I can connect to my VPN but all trafic is going through my normal home network. On my OpenVPN application I've got an information : Server IP: ...
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1answer
2k views

How to plot an R table in Linux terminal

I have a text file that I converted into a numeric vector: numbers <- scan("list_of_numbers.txt") I then put it into a table: t <- table(numbers) Which outputs like this: 1 2 ...
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1answer
47 views

Is my Windows partition too far down on the disk?

I have /boot/ on /dev/sda1 (1GB), followed by my Linux root LVM on /dev/sda2 (1.3GB). Finally, I freshly installed Windows 7 on /dev/sda3 in the remaining 700GB of space. When I select Windows 7 in ...
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535 views

Block All Traffic and Allow from Defined IP only in IPTABLES

I want to create a gateway firewall for my network . I want to block all the internal traffic on gateway and allow it from two computers only . On gateway --> eth0 is network card in gateway PC ...
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1answer
189 views

Mix of GRUB and GRUB2 (Linux and Solaris)

ALL, I have a DELL laptop on which I installed Linux and Open Solaris (in that order). Linux used GRUB2 and it was OK. Solaris still uses GRUB1 and it looks like it did overwrite the GRUB2 ...
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1answer
671 views

VMware 10 and Linux guest OS: how to change NIC driver from vmxnet3 to vmxnet

Guest OS: Ubuntu 14.04 Host OS: Windows 7 VMware Workstation 10 Problem: vmware tools automatically install vmxnet3 driver, without an option to select nic driver. In .vmx, ethernet0.virtualDev = "...
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114 views

Software RAID 1 Configuration

I have created a software RAID 1 quite some while ago and it always seemed to work for me. However I am not completely sure that I have configured everything right and do not have the experience to ...
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1answer
1k views

Upgrade R version on Linux Red Hat 6.2

I have R 2.15.2 installed on Linux Red Hat 6.2 and I want to upgrade it to the lastest version because I cannot install some packages (like 'Rcpp', 'shiny' and others). How can achieve that? Thanks! ...
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1answer
114 views

Remove all GUI elements from a Firefox 29 window under a specific profile

I'd like to make desktop shortcuts to certain webapps to a Firefox 29 window w/ all the GUI elements such as tabs, menubar, buttons, etc. removed. I'm following these instructions. This screengrab ...
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1answer
590 views

WGET/cron downloading webcamera file

our new town doctor put a web camera to his waiting room for people to see how much crowded it is. As my mom and grandparents go to this doctor, I wanted to download the files periodically and if they ...
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1answer
81 views

rsync per-site configuration file?

I know how to configure a per-site entry for ssh, but is there any kind of a client configuration for rsync that allows per-site configuration options and aliases or similar shortcuts like the .ssh/...
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1answer
250 views

How to let Linux Python application handle termination on user logout correctly?

I have written a Linux GUI application in Python that needs to do some cleanup tasks before being terminated when the user logs out. Unfortunately it seems, that on logout, all applications are killed....
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1answer
595 views

Windows does not boot - black screen with blinking cursor

In /dev/sda1 I restored Windows image with clonezilla (previously working with this hardware). From this time, I can not boot to Windows, black screen with blinking cursor is appeared. Then I ...
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243 views

Slackware ./configure error

I'm new to slackware. i'm trying to install freetds on my slackware 14.0 but i get this error when i run ./configure config.log say: gcc: error: unrecognized command line option '-V' gcc : fatal ...
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1answer
4k views

Networking lost after update from Debian Wheezy to Jessie

I am currently setting a Virtual Machine for development purposes. I did a big part of this configuration under Wheezy, but I need some debs that were available only on Jessie. So, I've updated the ...
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1answer
312 views

How to remove the urlbar/navigator bar of the Iceweasel 29.0.1?

I just updated my Iceweasel on Debian Jessie. The current version number is 29.0.1. I like using vimperator which does not work well with a navigator bar because the navigator bar always catch the ...
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1answer
678 views

Can't connect to windows server with rdesktop - “No valid license available” error

Im using Remotedesktop Client 0.23 on Linux Mint. When im trying to connect to a windows server, I get the following error: Disconnect: No valid license available I know that I'm supposed to delete a ...
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1answer
751 views

Iptables mark incoming packet - vpn routing

I have connected my home to my workplace for out of house backup reasons through OpenVPN. The connection is working nicely. At work I have 5 fixed IP addresses. Now I would like to assign one of ...
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1answer
787 views

Drive still usable if Seatools reports errors?

I have a Seagate 3TB Expansion Desktop drive that was part of a Linux RAID 6 array that failed. I eventually did a zero fill both through Seagate DiscWizard and via Linux dd, neither reported errors. ...
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1answer
96 views

Can you have 2 network boot servers?

I currently run Windows Deployment Services (WDS) to deploy default and custom created images. However, WDS can not do Linux as it requires .wim files. I want to also deploy Linux. Is it possible to ...
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1answer
25 views

do I need to partition new external drive before writing disk image?

I am having trouble rescueing data from potentially dying hard drive (laptop Windows 7, not booting) previous attempts have resulted in the copied files substantially exceeding their original file ...
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1answer
818 views

Installing Linux on a Windows 8.1 laptop

I would like to clean install a Linux distribution as Ubuntu etc. My laptop runs Windows 8.1. I have two options in mind. Clean install or dual boot. My technical question is: My laptop have a 8GB ...
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1answer
49 views

Can I remove the original file while running “sort”?

I'm sorting a huge file, around 400 gigabytes. I'm running out of the disk space and I must do something quickly. Let's assume the original file is called original_file. So I execute (simplified) it ...
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1answer
150 views

Limiting messages in Centos log file

I have a Centos 6.4 server. I wish to view httpd and PHP errors in /var/log/messages. The log shows a bunch of kernel messages which I don't want to view. How can I either configure syslog to not ...
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1answer
254 views

sfdisk can't create more than 4 partitions?

I'm running Centos 6 from command line, and I need to partition my disk using sfdisk more than 5 times. However I can't seem to create more than 4 partitions. >> sfdisk <scsi ID> --force ...
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1answer
154 views

Deploy PAM system-auth file from Configuration Server (Spacewalk)

I have my pam.d system-auth file set up correctly on a laptop to set password complexity requirements. If the contents of the file are copied directly into the /etc/pam.d/system-auth location (or the /...
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1answer
165 views

IPTables and PPTPd

I'm trying to add the line -A POSTROUTING -i ppp0 -j MASQUERADE to my IPTables in order to allow VPN to have access to the entire internal and external network (eth0, and eth1), but when I try to ...
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1answer
1k views

How to partition a Free Space using parted

During the installation of my ubuntu server, I had to leave a big space of my hard drive for specific service. Well, I forgot to to partition it up and leave it mounted during installation. Right Now, ...
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1answer
143 views

shred command overwrite value?

I'm trying to determine what shred uses to overwrite a file. Here's the description: Overwrite the specified FILE(s) repeatedly, in order to make it harder for even very expensive hardware ...
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1answer
397 views

iptables --append FORWARD required for routing between NIC alias IPs?

I have an ubuntu box with a single NIC. In order to bind a number of services (like apache, dnsmasq, etc), I have bound them to different alias's (e.g. eth0:0, etc), some of which are on completely ...
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1answer
330 views

How to add iptable support to the kernel (for Wheezy/Sid release)

I am running an ARM processor (similar to the raspberry pi) and my kernel doesnt natively support iptables. If I run apt-get install iptables, it successfully installs but NAT tables are unable to be ...
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1answer
409 views

Associate MIME Type with Shell Script?

I want to associate any file type with a .abc extension with the following shell script: #!/bin/bash echo arg 1 is: $1 The .abc type files just have text, but I want to ensure that opening a file ...
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1answer
20 views

Diagnose HD deficiencies on Linux without admin rights

Tools like dd or hdparm allows giving useful statistics on hard drive behavior, but require having a root access to the machine. Is there a common reliable way to diagnose HD problems for non-power ...
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1answer
203 views

Linux Bash SSH - Why won't my port forwarding tunnel command work?

The commands I'm trying are: ssh -vxNn -L 8080:192.168.x.xx:80 hostname@server ssh -vxNn -L 8080:192.168.x.xx:80 hostname@server Where the "x" is masked for security as is the hostname and server, ...
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1answer
786 views

How to make grub2 boot another drive MBR?

My laptop (DELL Vostro 3350) have two hard drives: 1- /dev/sda , ssd with Ubuntu14.04 , grub2 installed to this MBR. Installed on normaly hd bay 2- /dev/sdb , stock hd (with recovery partition etc ...
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1answer
189 views

How can I change names of network interfaces shown in “ip addr show”

Below is my partial output of ip addr show 10: ge4: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN link/ether 02:00:00:00:00:06 brd ff:ff:ff:ff:ff:ff 11: ge44: <...
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1answer
490 views

hardware clock is set but date command is displayed wrong date and time

I am setting date with settimeofday function my hardware clock is set perfectly but when i execute date command it shows me wrong date and time. but if i reboot the system than it show me proper date....
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1answer
5k views

init.d script - Permission denied

I'm trying to create a init.d script for my server which should start/stop the teamspeak server and some node.js apps using "pm2". Here's my script: #! /bin/sh ### BEGIN INIT INFO # Provides: ...