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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Diagnosing sporadic crashes on debian jessie (stable)

My server used to be incredibly stable on wheezy. After upgrading to jessie, it is now prone to crashing about once per week. I check on my server in the morning, the machine is on and the screen is ...
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OpenVPN setup in linux

I am running a Linux server with 2 network interface. one for internet and one for local clients. Local clients use windows 7.how can i use openvpn to connect from remote (home pc) to this linux ...
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How to mute application that does not appears in Linux volume manager?

I've downloaded gitter application but I cannot find the option for muting the sound for all rooms. So I've decided to mute application using OS features instead of particular application. The problem ...
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SQL error: [unixODBC][Driver Manager]Data source name not found, and no default driver specified

I am running a PHP script on a RedHat server using Teradatas ODBC drivers. <?php $conn = odbc_connect("Teradata", "username", "password"); $result = odbc_exec($conn, 'SELECT count(*) FROM ...
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Terminal closing unexpectedly after VM clone

I use a RedHat linux distribution on a VirtualBox. We have a ClearCase version control system with dynamic views (our home dirs are based on a shared server, using ClearCase users). This project has ...
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Prevent Administrator from listing Encrypted User Folder contents in Windows7

On a Windows7 system with a standard user and an administrator, the standard user encrypted his Documents folder using windows built in folder encryption feature. When the standard user is not logged ...
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2answers
31 views

IP address lost after rebooting Ubuntu Server 14.04

I have configured IP in desktop version of ubuntu server and I access that server through VNC viewer. But when I reboot the server the IP address gets flushed and I am not able to access the server ...
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1answer
23 views

how to host a web app on a linux box but still use windows authentication?

What do you need to have a web app hosted on a linux that uses windows authentication? I mean we have a lot of applications in our intranet on IIS servers. These applications almost always rely on ...
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14 views

Slow Authentication on Arch Linux using NSLCD and Windows AD

I recently built a Arch Linux server that authenticates using NSLCD connecting to Windows AD. The authentication works, but there is a long delay (approx 10 seconds) between entering a password and ...
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3answers
22 views

Backup linux workstation command

So I'm what you'll call a "almost" noob when it comes to linux. I recently started working on a CentOS workstation and I know there's a lot of customizations on it from the other user. I also know ...
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Open encrypted volumes created by LibreCrypt in linux

How can I open encrypted volumes created by LibreCrypt on linux? These Volume is created by LibreCrypt on Windows7 and is formatted with fat32. When I tried opening this volume in Linux through ...
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Deleting partitions [meant to be dual-boot] or a fresh re-install [Virtualization]: Centos 7/Win7

I appreciate any advice given to resolve this particular dilemma. The Background: I need to have Macromedia [Adobe] Dreamweaver and as such a copy of Windows somewhere. My main system is Centos 7.1. ...
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1answer
16 views

tcplay: cannot write to mounted volume

Background I set up a TrueCrypt volume in Windows that I want to write to in Linux. It is a file within a hard drive I have mounted to a directory: drwx------ 1 user user 20K Aug 18 02:53 hdd/. I ...
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Debian 8 High memory usage by rsyslogd (virtual not resident) on Debian

Good evening. So, after using Debian for a while, I noticed that each rsyslogd thread is taking a lot of memory 252MB Virtual Memory. I read that virtual memory is allocated but not used, but ...
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2answers
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virtualenv cannot create enviroment

System used= ubuntu 14.04 , python = 2.7.6 . I'm trying to setup virtualenviroment using virtualenv to setup django1.8 . I installed pip and virtualenv using below commands apt-get install ...
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28 views

xrandr to set display to use single monitor, even if you have another monitor connected or disconnected

xrandr to set display to use single monitor, even if you have another monitor connected or disconnected I have a laptop that can move and be connected to different monitors etc through out the day. ...
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1answer
26 views

linux + RAID - on which disk are my file?

I have a server with 4 physical disks ( HP WK 8600). Seems like the 4 disks are mounted on a RAID card. The Ubuntu 14.04 sees only one disk. -wks:/dev$ lsscsi -g [2:2:0:0] disk INTEL ...
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1answer
23 views

Added 2x DIMMs to Linux system but not seen in Total Memory

I had an old PC with Arch Linux $ uname -a Linux desktop 4.1.4-1-ARCH #1 SMP PREEMPT Mon Aug 3 21:53:10 UTC 2015 i686 GNU/Linux with 2GB RAM. I've added 2x1Gb DDR2 DIMMs and now the system has ...
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585 views

How are public keys “sent” to servers, and how are private keys “used” for SSH?

There are two Linux machines, A and B. Scripts running on A need to be able to SSH into B. So A generates a public key (probably an ssh-keygen-generated id_rsa.pub), and then uses its respective ...
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30 views

Access Samba share in VM via Centos Host with a Windows 10 PC

I'm running Windows 10 on a PC which can see a Centos 7 server on the network. That server is hosting several VMs running Centos 7 on a different sub-net (i.e. 192.168.122.xxx). The Centos Host and ...
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25 views

Mounting multiple NFS directories on MacOS (Yosemite)

I'm attempting to mount two directories exported from the same NAS on my mac (2013 Air, 10.10.3), and OSX seems to have trouble reading /etc/exports on the server: it can only mount one of the two ...
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15 views

systemd WakeSystem timer unsuspends system but doesn't run service

I'm trying to use systemd as an alarm clock (per this guide, but I'll give all the relevant details in this post). The core of the setup is these two files: /etc/systemd/system/goodmorning.timer: ...
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1answer
19 views

Set directory tree to belong to fixed group

I have a directory tree under /mnt/data where I would like to keep data. I would ike my user: guest to have read access student to have read and write access me to also have read and write access ...
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1answer
33 views

How to find Listen and Open ports in Linux.? [duplicate]

I want to list Listen ports and Established ports and unused activated ports. I need to know commands for this..?
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1answer
35 views

cron job does not wait end of process

I made a script which execute commands and others scripts. Some of these actions take time. When I execute my script manually from the cli, it work fine waiting the end of each instruction before go ...
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1answer
25 views

Ctrl-C'd an in-place recursive gzip - is this likely to have broken anything?

So, today i was trying to zip up a large folder (that has a large nested set of subfolders), in linux. I did: gzip -r bigfolder bigfolder.gz and after it had been going for a couple of minutes I ...
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14 views

Boot Linux on Lenovo Ideapad Z510 through GRUB

I have installed Arch Linux on Lenovo Ideapad Z510. I had to disable UEFI and select Legacy first to get my live CD pendrive to boot. Once installed and rebooted, I get to see a screen that says "No ...
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1answer
30 views

“shutdown -m” from Linux

I recently discovered that it is possible to remotely shutdown a Windows machine (from another Windows machine) using the command shutdown -m \\computername I currently have an overly complicated ...
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1answer
32 views

/etc/shadow - how could it be edited when it is read only

I am trying to change the content of /etc/shadow file but realize it is read only sghk1> ls -l /etc/shadow -r-------- 1 root sys 4045 Aug 19 16:13 /etc/shadow the /etc/shadow file ...
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20 views

Auto start wlan0 with ip 0.0.0.0

I have this /etc/network/interfaces config file for wlan0 auto wlan0 iface wlan0 inet static address 1.2.3.4 netmask 255.255.255.0 wpa-driver nl80211 wpa-conf ...
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1answer
19 views

How do I install/generate all locales on Fedora?

localectl list-locales lists quite a selection of english language locales, but everything else is missing. How do I install or generate all locales? I tried installing all language packs with: dnf ...
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1answer
15 views

Axel-command-line-downloader just show progress?

Is there any way to hide all output from axel command but DO NOT HIDE progress bar. I want to get output like; [ 5%] [0 1 2 3 ] [ 567,5KB/s] [15:59] This ...
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1answer
14 views

Match .file with POSIX extended regular expression

I am trying to match any file with a dot in the front using POSIX extended regular expression. I know in regex this is ^\..*. This is what I'm using it in: #!/bin/sh MONITORDIR1="/hdd_1/path/to/dir" ...
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12 views

Stop Jenkins from Converting Paths on Windows

I am attempting to run a Windows 8.1 machine as a "dumb slave". I am using Cygwin and SSHD to provide a working environment that functions great when I SSH into this machine. However, I am having ...
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1answer
80 views

Kali linux 2.0 wlan0

I executed the following command not knowing that it would disable the wireless option from my settings. iw wlan0 del Is there any way to reverse the command? Any help would be really appreciated. ...
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Is it possible to restore the session of an image viewer? [closed]

I have large images of a scanned manuscript which contain a lot of small and unclear text. Every time I open those images using any image viewer, I spend a few minutes to find the point where I ...
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1answer
16 views

splitting separate bashrcs for different purposes

I was wondering if I can split my .bashrc into separate parts, and linux will pick up both files and use them correctly. I have general purpose scripts like 'cleanproject', and scripts that are only ...
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2answers
25 views

How can I run a script at boot time right when the disks are mounted?

Note: I'm not asking about running a service (or whatever) when booting is completed (I know how to do that). Background System boots from an SDCard, which has the full system on it. Attached to it ...
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1answer
52 views

Cant log in on kali linux

So I downloaded kali linux to a bootable usb drive and booted it up on my pc chose the graphical install and installed it, at some part it told me that it's going to wipe my whole hard drive and for ...
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2answers
80 views

“Disk quota exceeded” when writing to /tmp, but plenty of space (linux)

i have a VPS. It's managed with the notorious parallels plesk. today i started seeing messages (via wordpress at first, but also from the command line shell), saying: "Disk quota exceeded". ...
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1answer
15 views

Operating on wildcard input files and saving output as <input> + suffix

I want to batch process my a list of wildcard input files and then output then to the input filename with a suffix appended. I'm hoping to understand this general case. In particular, I'm running ...
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8 views

Reset profile settings while keeping history, bookmarks, cookies, etc [duplicate]

After updating Firefox to 40.0, the default profile fails to render any windows (including the menu bar and the rest of the GUI). However, I can navigate to any page, and copy page contents via the ...
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3answers
49 views

Are non-prefix netmasks possible?

Every netmask I've ever encountered is a prefix, neatly expressible by the CIDR notation: /8 for 255.0.0.0, /16 for 255.255.0.0 and /24 for 255.255.255.0. Of course, we can change the length of the ...
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32 views

VirtualBox guest bridge WiFi support on Linux laptop, either by bridging or passthrough

I need to use a VPN from a Windows VirtualBox guest on a Linux host laptop. This works fine via ethernet, but I really need to do this over wireless networks, and the built-in Intel 3160 wifi card in ...
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2answers
42 views

Unable to install gcc compiler

I am trying to install gcc compiler using the command: yum install gcc but I am getting the error as: Loaded plugins: product-id, security, subscription-manager Updating certificate-based ...
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How do I check the transfer speed and the progress in Linux? [duplicate]

I want to transfer a 2GB folder from folder A to folder B in Linux. How do I check the transfer speed and the progress? The command I am using is: cp -rv old-directory new-directory
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1answer
25 views

Reconnect drive to raid-1 array with mdadm

I need a large and relatively robust backup method. I had an old desktop running debian and put in two identical 2tb drives in raid-1 configuration using mdadm So I would start the array using ...
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34 views

How to get the correct password?

If I know that a password field has 10000 possibilities because it's a 4 numbers password like 1234. Generally, It is abcd where a,b,c,d is any integer between 0 and 9 and so that's how I get the 10^4 ...
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2answers
25 views

VM apt-get install - network is unreachable

I have a Vagrant backed Ubuntu VM which I'm trying to do some performance testing on. In order to do so I'm trying to install gdb When I run apt-get install I see the following: ...
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2answers
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Using dd to write zeroes to CF card on USB Card Reader causes much reading

I am zeroing a CF card using dd dd if=/dev/zero of=/dev/sdg Watching the system using gkrellm or iostat I see lots of reads from the CF card device, followed by bursts of writes. With this ...