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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Non-persistent USB Drive and Deleted Files

I created a non-persistent USB drive with Xubuntu Linux just for testing and playing around with. I ran into an interesting problem. I downloaded some files to the Linux desktop, NOT C: drive or any ...
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41 views

how to keep counters on iptables rule replace ?

When replacing a rule (by it's number), the counters also get reset. I can think of a scripting solution, though on very high traffic, this loses packets. Is there a way to keep the counters up? For ...
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343 views

package-cleanup --cleandupes fails to remove duplicates

I have an issue with duplicate packages installed on my Fedora machine: # package-cleanup --dupes Loaded plugins: langpacks, refresh-packagekit audit-2.3.3-1.fc20.x86_64 audit-2.3.2-1.fc20.x86_64 ...
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42 views

Saving a log of console-mode Memtest86+ run

To debug mysterious failures with my workstation, I've booted it with an Ubuntu LiveCD and ran Memtest86+ in console mode. It found many errors. To isolate the defective sticks I need to send the lab ...
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26 views

on pin configuration in ALSA

I seek explanation for a strange behavior: as my codec dump can testify, I have speakers on pin 0x14 and HP on 0x15 (and, possibly, ext MIC at 0x18 and int MIC at 0x19), then why does the command ...
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113 views

GRUB2 restarts on “GRUB loading” on Gentoo

After following the Gentoo handbook to install Gentoo, I have finished everything except rebooting the system after the installation of GRUB to my HDD. No errors are reported, but I cannot get GRUB ...
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16 views

How to see the “parent” sessions/users

Maybe a strange title, but this is what I sometimes do: user1@host1 # ssh user2@host2 user2@host2 # ssh user3@host3 user3@host3 # What command can I use when I'm at host3 # to see that I logged in ...
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14 views

Accidental broken file transfer - merge separated directories?

I'm using an online service which is transferring files (TBs) between two servers. I accidentally moved one of the directories on the destination drive, and a new one was created with the continuing ...
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59 views

Is pam_url limited only to HTTPS?

As you probably are aware, pam_url has almost no documentation. I am trying to use pam_url to authenticate my users against ArangoDB database. Here is my /et/pam_url.conf file: # pam_url ...
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62 views

How to remotely detect (past) human activity on a linux machine

I need to find out if a human is working on a remote linux machine. Either also remotely or locally. For now, I log into the machine via ssh and get the output of w | grep -v `whoami` which tells ...
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89 views

unable to configure nat on centos 6.4

i have configured nat on my centos 6.4 on vmware workstation with the following cofiguration i have two ethernet adapters eth0 and eth1 eth0 has public ip automatically taken by dhcp eth1 has private ...
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38 views

How to close login shell (and children of that shell) after unclean SSH exit (e.g. closing PuTTY instance)

If PuTTY window is closed without explicitly ending the session, the login shell and subshells remain in the process tree (note the script.sh was running at the time SSH connection was dropped): user ...
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18 views

Is there an option to make 'tar' warn when an archive doesn't contain a single top-level directory?

I personally dislike it when tar/zip files contain many files without a base directory. For example, mypackage.tar.bz2 ├── a.txt ├── b.txt └── c.txt instead of mypackage.tar.bz2 └── mypackage/ ...
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40 views

losetup and mount create two entries in Nautilus for a floppy image

I am referring to BrokenThorn's tutorial on OS development. Though it is for Windows, I learnt how to create a bootable floppy in Linux, mount it to transfer files and also boot off it. After ...
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108 views

xkb set keyboard level 3 chooser to ctrl+alt

The title says it all: I'm interested to mimic the Windows behavior, where Left Ctrl + Left Alt acts as a 3rd level chooser. This is relatively important to me, because, as a programmer, on my ...
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272 views

Xorg unable to find screen configuration in minimal EL6 install with Intel HD 4400 graphics

I have installed a minimal EL6 (based on Scientific Linux 6.4) distro on a computer which has the following on-board graphics: lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation ...
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102 views

mutt client: Not able to save sent messages in “Sent Items” folder

I have configured mutt as the mail client to send the mail using Linux command line. I have configured the mail client by saving the configuration in the .muttrc file. I am able to retrieve all the ...
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45 views

Razer Anansi doesn't work in GNU GRUB 2

My new Razer Anansi keyboard does not function in the GNU GRUB version 2.00-19ubuntu2 bootloader that's running on my machine. The backlights do not turn on, and the keyboard is unresponsive. This ...
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110 views

Why does iptables restart cause connectivity timeout for about a minute?

I have a centos 6.5 64bit router with 3 nics. The box is configured to route 2 networks. netA - eth1 [ about 10 clients ] netB - eth2 [ about 100 clients ] provider - eth0 [ fiber to isp ] I have a ...
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30 views

Xubuntu on hdd crash at login after virtualizing it on vmware

I have multiple OS installed on my system, some of them are Windows 7 and Xubuntu 13. I have installed Xubuntu a few days ago and for some reasons I had to virtualize Xubuntu on Windows. So I've ...
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19 views

Optimal config for VM host

I'm facing a big issue when I start my windows virtual machine. I noticed that there are a heavy disk usage, and in consequence the host desktop os is freezing and I'm not able to get back "commands". ...
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39 views

Ubuntu 9.10 on android : socket permission

I run the server on ubuntu 9.10, which runs on android 2.2 by chroot. In that case, I must have root permission to use socket(and related to socket; like SSH X Forwarding). How can I have socket ...
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9 views

Repository for all Apache products on CentOS?

Apache Web server aside, is there an easy repo that I can add that includes all Apache products for CentOS? It would be nice if I could install some things such as Hadoop and the like without a manual ...
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122 views

laptop sees two connections when HD TV is plugged, but no image

With Apple Macbook Air 1,1 (Early 2008) and Ubuntu 12.04 with kernel Linux 3.2.0-68-generic-pae, when I connect it to an HD TV via the micro-DVI to DVI (Apple adapter) --> DVI to HDMI (I tried two ...
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36 views

Modify BURG boot entries

I have configured BURG on my machine to dual boot Windows 7 and Linux. There are 5 options on my boot screen, 2 of which are for Windows 7 and Linux - the other 3 being for things like recovery modes. ...
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199 views

Trying to record my screen and voice from usb microphone but voice is very low in output? (using kazam on linux)

I am using Linux with Kazam software for screen recording. I am trying to record my screen as I speak while recording to make some tutorial video on my laptop. The problem I am facing is that the ...
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29 views

Icedove (Thunderbird) isn't showing this year's mail

For some reason, Icedove is not showing mail received this year when I filter or search. It is currently January 2014 - and whenever I use a filter or search function to go through emails, it simply ...
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27 views

How do I determine whether a program other than bash is running in a different pane in tmux, and if so suspend it and return to the shell temporarily?

I am trying to write a bash script to script tmux and do things in every pane in my current window. That I have down, but I'd like to be able to know if another window is running the shell or if I'm ...
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96 views

How to configure Jenkins to run on port 80

How can I configure Jenkins to run on the HTTP port 80, only accessible to a certain Apache virtual server only on a specific subdomain? I have one virtual server: business.com running on the server. ...
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52 views

Windows soft link on Samba share

I had created symlink on windows, where target is Linux Samba exported share mklink /D "\linuxdir" "\\ipaddress\sambashare" I can now see folders in \linuxdir which exists on samba share as well. ...
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How to load Hirens to portable drive and then install in Dell 3330 laptop

I have a problem that is driving me crazy and I hope someone can help. My son purchased a Dell 3330 laptop that had a bad drive installed. The bios is locked and is set to only boot to a hard drive, ...
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36 views

Analyze network usage amount with Linux

Sometimes when working in the office our internet connection becomes unusable. I'm not sure weather it's the actual internet connection or if our internal network is overflowed with data. Most of the ...
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114 views

Why do I get an error when resolving hostname under Linux?

In Ubuntu 12.04(Virtual Box) I am trying to resolve a hostname by using nslookup myhost 172.16.0.100 and I get the reply Server: 172.16.0.100 Address: 172.16.0.100#53 ** server can't find ...
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129 views

dnsmasq returns 127.0.0.1 for lookup itself

This is a follow up to the question, Ping to dnsmasq's host resolvesto 127.0.0.1, because that answer doesn't work for me. It should work -- I found another one having the same answer: ...
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79 views

Binding superkey + Ctrl to behave as right alt

I can't do any symbols such as ¡@£$€¥{[]} ("lower" symbols on number keys) using left ctrl and the super key on my keyboard. I can do these symbols by using the right alt. I would like to use a ...
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30 views

Simple multi-domain email management under linux

I was looking to a way to deploy a simple email ecosystem, with postfix, dovecot and antispam/antivirus milters in a fast and easy way, without configuring them one by one manually. I saw iRedMail, ...
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71 views

Nmap doesn't use the script supplied in argument

I'm running under Kali Linux and I'm trying to run a script against a host in the lab. The command I'm entering and the output is: root@kali-vm:~# nmap --script smb-enum-users.nse -p445 192.168.1.1 ...
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104 views

What can cause a sudden increase in the number of processes at my VPS?

My VPS (Ubuntu 12.04.3 LTS ) dies few times a month. Only restarting whole VPS through hosting panel helps. I discovered that the cause of that is a sudden increase of the number of processes. I've ...
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81 views

How to set shutdown criteria for network ups tools in Debian Jessie

I have installed the nut-server and nut-client pagages for debian and I do have communication with a dell ups. I can send shutdown and start commands via upsdrvctl and the UPS is fully supported ...
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141 views

How to access different tty session

I wanted to know if there is any possibility of login to other tty sessions. Someone has mistakenly changed the root su password. One of the session is already logged in as root. So any possibility ...
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260 views

Cannot copy over 7MB file to Samba cluster on Centos 6.5

I have followed these instructions (with lots of updates since it's old) to get working two nodes Samba cluster in my VirtualBox lab. It's almost done, but I experience strange issue and does not know ...
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11 views

How to create a pane with a height of 1

I'm writing a bash script that uses tmux. In it, I want to create a pane wioth a height of 1 line. I tried doing tmux splitw -v -l 1, but that just gave me a pane with a height of 2. I also tried ...
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296 views

Meaning of sshd's disconnection log messages

I got a series of messages like below in /var/log/secure and I'm curious about the numbers and the messages. Received disconnect from xxx.xxx.xxx.xxx: 11: Bye Bye Received disconnect from ...
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107 views

Sleep hard disk after X minutes of idle

I want to make two drives sleep after 15 minutes of idle (sdb and sdc) on Linux Arch. I have the idea that hdparm should be able to help me. I can put the disks into standby (hard disk spins down, ...
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486 views

Can't install php-fpm: dependency issues

I'm trying to install php-fpm for my nginx server. Trying to install through yum (yum --enablerepo=remi install php-fpm php-mysql), I get the next error: Error: Package: ...
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40 views

VPN across three VPS's

I have three servers running on virtual machines. The gateway is 192.168.0.1, and the hosts are the numbers 2,3 and 4. The first host is serving a PHP script which outputs the visitor IP ...
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75 views

Unable to install Flash Debug Player on Fedora 19

I'm trying to install Flash Debug Player in Fedora 19 x64. I understand that Flash Debug Player is not available for x64 on Linux, so the way to go would be to install the i686 version, and then use ...
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26 views

Bacula is backing up the same files every night

On my servers, I have a script that resets the owner/group of a large directory to a specific user and group every night. This is causing the stime (ls -l --time=status) to change, and thus bacula ...
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56 views

Virtual machines using wrong IP addresses

I have a host computer (A), running three virtual machines: X,Y and Z. They're under a NAT layer, in which the Host A is the gateway (192.168.0.1/16), and the VM's are respectively 192.168.0.2 (X), ...
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127 views

find files between dates and move to other directory

I have multiple logs file in one of the direcortories, was trying to move them monthly wise to another path. tried below script for the same. for Month in `seq -w 1 12`; do MLDAY=$(date -d ...