Questions specifically about Linux, as opposed to Unix-like systems in general, or to questions about a specific distribution or program.

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1
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0answers
26 views

Dual displays, one fixed, one spinning (CentOS 7)

I have 2 monitors and would like to have my setup like this: Monitor = fixed desktop (only 1) Monitor = dynamic, spinning desktop (1+) It was working like this at the beginning but somehow I ...
1
vote
1answer
39 views

basic explanation on NSS , LDAP and PAM

can anyone give me a basic explanation on what are NSS , LDAP and PAM and what they used for and what is their relationship/differences ?
1
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3answers
32 views

Software RAID10 setup writes small files extremely slowly, is this normal?

I have a software RAID-10 setup on Linux 3.16.6-203.fc20.x86_64, with 1.2 metadata and the default chunk size (512K): $ cat /proc/mdstat md0 : active raid10 sdc1[4] sdb1[0] sdd1[2] sde1[3] ...
0
votes
0answers
16 views

Add multiple workgroups in Samba

I am using RHEL 6.5 and I have integrated this server with Active Directory using this guide. As of now, I have configured only one domain in /etc/samba/smb.conf, so that only the users belonging to ...
0
votes
1answer
55 views

mailx: nss-config-dir=/etc/pki/nssdb/: No such file or directory

I am trying to send email using mailx using remote SMTP server (in my case it is office365 SMTP Server). Here is the command: # echo "THis is the Body of the email" | mailx -v -s "This is email ...
2
votes
1answer
33 views

What is the correct available entropy on UNIX systems?

I have three questions related to entropy on UNIX systems: I check entropy on Linux using: cat /proc/sys/kernel/random/entropy_avail. Is this the standard place with information about available ...
0
votes
0answers
38 views

BTRFS Raid1 on SD card and HDD

I have the / partition on a btrfs SD card /dev/mmcblk0p2. /boot is on vfat /dev/mmcblk0p1). It's a Raspberry Pi running Arch Linux and its fstab looks like so: /dev/mmcblk0p2 / btrfs ...
4
votes
2answers
344 views

How to understand linux versioning

I am just a newbie in Linux. Can anyone please help me to understand the Linux versioning system and distribution concepts? what are public, stable or final terms for versions? Give me a little bit of ...
1
vote
0answers
34 views

What are the minimum system requirements for ultimate edition 4.2

I was choosing a Linux edition to install in my PC. I have an Intel pentium dual core with 2.9 processor speed and 2GB Ram. Now running just XP on it. I found the Ultimate edition 4.2.1, so can I ...
1
vote
0answers
13 views

how to binding each each interface to a seperate VPN config

What I am trying to do is route all traffic that comes on a given interface to a specific, per interface, VPN connection where all outbound traffic is actually leaving on WAN0. I frankly don't have a ...
0
votes
1answer
29 views

System freezes on startup

Lately my Arch Linux desktop freezes more frequently after I boot it up. Now it happens about 4-6 times before I finally get a complete startup. It freezes as different points, sometimes at a message ...
12
votes
2answers
784 views

memory limit of the Linux kernel

I have a perplexing problem. I have a library which uses sg for executing customized CDBs. There are a couple of systems which routinely have issues with memory allocation in sg. Usually, the sg ...
1
vote
0answers
35 views

Tracker-extract and Tracker-store processes consuming huge Amount of RAM

I am using Arch Linux, kernel 3.16. From last one week my two processes tracker-extract and tracker-store are taking too much RAM. It results in hangup of system once in every 2 hours. ...
1
vote
1answer
45 views

Cannot install Intel NIC in Debian squeeze

I've upgraded an old machine to a brand new i3 (Asus H97-PRO motherboard, cpu and ram only) and Debian accepted it quite well, except for the network card. I'm having some trouble trying to install ...
1
vote
1answer
46 views

Recovering system with HDD crash and re installing GRUB

Recently i hard disk crash in my system. To recover from that disaster below are the steps i followed Has a master backup created using FSARCHIVER In a new hard disk created required partitions ...
1
vote
2answers
33 views

Enabling SELinux on RHEL

I am using RHEL 6.5 and I need to enable SELinux. I have tried following commands, but it is of no help: $ setenforce 1 $ echo 1 > /selinux/enforce Note: I also tried editing ...
1
vote
0answers
23 views

4k mode hard disk partition

I am trying to create a 256 MB primary partition for my 320 Gig hdd using fdisk. Since, the drive support 4k I wanted to try the emulation mode. so, for 256 Mb of 512 K blocks leads me with below ...
1
vote
0answers
79 views

Getting “cannot open shared object file: No such file or directory” error while run time

I have successfully compiled the file but now I am getting following errors export LD_LIBRARY_PATH=/opt/mcr/v717/sys/java/jre/glnxa64/jre/lib/amd64/server/:D_LIBRARY_PATH ./invoke ./invoke: error ...
0
votes
0answers
15 views

Simulate the remote host identification warning [duplicate]

I need to simulate the warning: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING ...
-1
votes
1answer
28 views

Kali vmware live vs graphic install

All, Forgive me I am a newbie for Linux world. I was following Kali VM installations and trying to create a Kali virtual machine with VMWare. So far, Everything is ok. And I can do everything in the ...
1
vote
0answers
31 views

How to solve constant freezes in any linux? [closed]

I'm desperately trying to become Linux user in the past few months, but problems emerge one by another... I tried Ubuntu first, then Linux Mint (Cinnamon) Suse, and last was Debian. I am constantly ...
2
votes
3answers
48 views

Removing lines from one file based on non-existence in another

I need to remove lines from fileA which has two columns if fileB (one column only) does not contain the string from column1 in fileA. Any linux command would help. Thanks. Example. Here is fileA: a ...
2
votes
0answers
7 views

Why doesn't enabling the rtc interrupt show in the /proc/interrupts? [migrated]

I've written a simple app to enable rtc interrupts. #include <stdio.h> #include <fcntl.h> #include <linux/rtc.h> #include <sys/ioctl.h> int main() { int fd = ...
0
votes
1answer
127 views

Is my linux mint box vulnerable to Shell-Shock attacks? How might I remedy that? [closed]

Is it safe to use Linux Mint now, with ShellShock existing? If not, what can I do to use Mint safely?
2
votes
1answer
41 views

How to disable USB devices based on their vendor ID on GNU/Linux?

In that question someone wanted a blacklist for all USB devices, and then only allow specific devices. In this question, we want to accept all USB devices, but prevent the driver (e.g. cdc_acm) from ...
1
vote
0answers
28 views

How to install linux on my hardidsk? [closed]

Well i am newbie in Linux. Trying to install Linux in my PC for the first time. Below is what i have tried: I am using windows XP. So, made a partition in my hard disk of 15 GB in NTFS format. I ...
0
votes
0answers
22 views

iptables rate limit error

This is on centos 6.5, I want to limit number of maximum connections using iptables: iptables -A INPUT -p tcp --syn --dport 80 -m connlimit --connlimit-above 15 --connlimit-mask 32 -j REJECT ...
5
votes
1answer
57 views

View/manipulate mount namespaces in Linux

Is there any way to view or manipulate the mount namespace for an arbitrary process? For example, a docker container is running which has a local mount to an NFS server. It can be seen from inside ...
2
votes
1answer
31 views

Resize Arch root partition in gparted

my arch linux(antergos) partition is getting small and I wanted to resize it by using a USB stick with the live version of antergos. So I booted, installed gparted but I'm unable to resize it ...
0
votes
1answer
39 views

Questions about CPU usage [closed]

How bad/normal/good is this CPU usage? Cpu0 : 14.4%us, 6.3%sy, 0.0%ni, 78.8%id, 0.0%wa, 0.0%hi, 0.5%si, 0.0%st Cpu1 : 88.3%us, 8.0%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 3.7%si, 0.0%st ...
-2
votes
2answers
51 views

Linux for girlfriend [closed]

I want to install Linux on my girlfriend's machine. Her current system, Windows Vista, is about 7-8 years old and pretty slow. She used Windows all her life and to make the change as easy as possible, ...
1
vote
1answer
25 views

How can I configure the threshold when my fan sets in (laptop)

I'm using a sony vaio pro 13 with linux, but unfortunately the fan is already at maximum at only 50 degrees Celsius. How can I change the threshold it sets in? Distro is arch btw.
-4
votes
1answer
32 views

Which Linux should I chose for penetration testing and networking [closed]

I am fairly new to networking and penetration testing, however, I'm really interested in the field and would like to know which distribution of Linux would be best to work with for security ...
1
vote
2answers
45 views

No “$” or “#” Sign After Logging in Solaris 10 with Putty

This is my environment: Solaris Version 10; Sun OS Version 5.10 Oracle Version: 11g Enterprise x64 Edition. When I am getting log on through putty it is giving me this output: login as: ora Using ...
0
votes
1answer
61 views

How to recover linux user password? [duplicate]

I forgot my user password for my Linux and there is no permission to login as root. I don’t know how to recover it.
1
vote
0answers
25 views

New terminal with command and continue using it [duplicate]

I would like to open a new terminal and run a command from another terminal. I would like to be able to re-use that terminal after. I've tried: xfce4-terminal --hold -x echo "Hello" & But ...
5
votes
1answer
120 views

Calls to sync/fsync slow down after 30 minutes uptime

After 30 minutes of uptime using Ubuntu 14.04 with a hybrid SSD I see many processes blocking IO using iotop. This is during disk writes, for example if I open and close an empty file in gedit it can ...
1
vote
0answers
22 views

Maximum clients with USB hotspot

I made a small access point using Hostapd, Dnsmasq and Debian Wheezy. I'm using an USB dongle, how could I know the maximum number of clients allowed? Can I change it? How can I manage (disconnect, ...
1
vote
1answer
48 views

Why does ZFS large file not instantly like btrfs?

Copying a 1TB disk image on a btrfs partition with cp takes less than a second on my Ubuntu 14.10 amd64 with Linux 3.16.0. Why does it take at least 5 minutes and requires > 1 GB to be read on a ZFS ...
1
vote
1answer
20 views

Alsa resampling

My setup is Vortexbox 2.3, a Linux music distro based on Fedora. I have a multichannel sound card, USBStreamer from miniDSP. I have set up separate stereo devices in asound.conf so I can have ...
1
vote
0answers
14 views

Can aura run on other linux distros?

Is it possible to run the Google Chrome OS's Aura GUI in other linux distros like fedora or ubuntu?
0
votes
0answers
108 views

Can't boot into legacy SeaBIOS

I have a Acer CB3-111 Chromebook, and am trying to run Debian wheezy Following tutorials online, I managed to: Put machine into developer mode Enable legacy SeaBIOS (crossystem dev_boot_usb=1 ...
0
votes
0answers
13 views

Synaptics touchpad LED support

How to enabled support the LED in Synaptics touchpads? I'm use Debian Jessie and xserver-xorg-input-synaptics ver. 1.8.1-1. I'm find patches by Takashi Iwai from SUSE for supporting the LED in ...
2
votes
1answer
34 views

bound, but not listening process

python code for simple daemon import socket import time import signal s=socket.socket() s.bind(('127.0.1.1', 20201)) def stop(*a, **k): global work work = False ...
0
votes
0answers
23 views

Installer crashes and say write your dvd with low speed

I want to Install Linux OS in my laptop, but I get an error while installing. I was able to install Ubuntu 14.04 and Linux Mint 16 successfully, but when I try to install Linux Mint 17 Cinnamon, or ...
1
vote
1answer
58 views

MCE error: MCA: Internal parity error

I have an unstable machine running Ubuntu 14.04 LTS which passes 9 hours of memtest86. I get these: Hardware event. This is not a software error. MCE 0 CPU 1 BANK 0 TIME 1414735539 Fri Oct 31 ...
0
votes
0answers
19 views

Default vt number at Linux startup

Whenever we boot into linux, then the default vt used by the kernel is 1. And X starts either on vt2 or on vt7. We can switch back to vt1 with Ctrl+Alt+F1 to see the logs or messages. Is there any ...
0
votes
0answers
64 views

system won't poweroff, restarts with :“Synchronizing SCSI cache”

Running Debian testing, after a system upgrade a while back my machine started to refuse to power down. It hangs with: Synchronizing SCSI cache Waits a few seconds, and then reboots itself. It ...
1
vote
0answers
31 views

Can't do yum install postfix on Fedora 20

I have this problem when trying to install "postfix". I've done some research and tried commenting out "metalink" line and uncommenting "baseurl" line in the file /etc/yum.repos.d/fedora-updates.repo ...
3
votes
1answer
30 views

Does gnome-terminal have an equivalent for xterm's modifyOtherKeys?

xterm has a modifyOtherKeys option that tells it to construct an escape sequence for various key combinations that are normally not available. That option can be enabled in .Xdefaults, or with a ...