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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1answer
18 views

Kernel Module Upgrade

Due to historical reason, I am bound to use kernel 3.0 for my existing custom operating system. Now, I'm trying to use this OS onto new board, which requires radeon kernel module for native X driver ...
1
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2answers
30 views

List running processes without procfs

I'd like to list running process (like using ps or top), but there is no procfs mounted. The procfs not being mounted is intentional, and is made to prevent malicious user to access systems ...
0
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0answers
16 views

ffmpeg -i filename.mp4 display “Segmentation fault (core dumped)” error [on hold]

Whenever i execute ffmpeg -i filename.mp4 it return Segmentation fault (core dumped) error. I am attaching snapshot here
2
votes
0answers
23 views

Understanding ext4/jbd2 transactions

I'm trying to debug a bit of trouble I'm having with I/O latency on a system using ext4, but I'm a bit stumped in that I don't understand its journalling as well as I'd like to. What I'm wondering in ...
1
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0answers
7 views

oem-bt-ar-9462-dkms error in Ubuntu

I am new to ubuntu and Linux and i was recently prompted to install new updates and this error keeps popping up. Is there any way that i could resolve this? I am not sure what to do here and any help ...
0
votes
3answers
51 views

crontab is launching multiple java process every 5 minutes?

I have a java runnable jar which I need to run it if it not running or got killed for some reason so I decided to use crontab for this - I need to run the crontab as "poppetapp" user so I am logged ...
0
votes
1answer
26 views

Problems in using GRUB2 - Manjaro

I hope you are well! I use Manjaro x64_86, using GRUB2 and EFI. I made a large error after coming home from a night shift. I accidentally removed my boot partition when attempting to format an ...
-1
votes
0answers
32 views

How to write shell script to check diskspace on the list of servers and store it in a file?

I want to write the shell script that checks the disk space for the list of servers and store the output in a file. Then add the entry in the cronjob to execute the script. And finally I want the ...
1
vote
0answers
24 views

Is here any 100% solution how to run 3 monitors (2 nvidia + 1 iGPU) with drivers? [on hold]

I have 2 monitors on my Nvidia card and 1 on integrated Intel Graphics I wasted a lot of time to this problem. After install Intel drivers works only monitor on IGPU, after Nvidia only on Nvidia card. ...
0
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0answers
16 views

Looking for script to fetch output for requested date [on hold]

I am looking for a script which helps me to fetch output for requested timestamp from different directries.
1
vote
1answer
17 views

multicast frames in Linux virtual-switch

I have a network topology where in "Dell PE860" runs a Linux virtual-switch br0: Now if I send an Ethernet frame to broadcast address from "IBM ThinkCentre": 17:10:23.569021 00:a1:ff:01:02:05 > ...
1
vote
1answer
24 views

Scheduling a task whenever the system starts

I've installed Ubuntu alongside Windows 8.1. I want to create a task that mounts some of my Hard disk drives whenever the system starts. What Linux command can I use? Thanks in advance.
1
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1answer
30 views

index in front of “ip link” or “ip addr” output

There is an index in front of each network interface in ip link show or ip addr show output. For example from 1 to 6 here: root@T42:~# ip link show 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc ...
0
votes
0answers
6 views

Linux Mint & LIFEREA rss reader

I have the linux Mint 17.1 Cinnamon distribution installed on my laptop and I cannot launch the software Liferea from the terminal, although, it will work fine if I launch that using the menu/icon. ...
0
votes
1answer
35 views

Is it possible to access to the framebuffer in order to put a pixel on the screen from the command line?

I am not sure if it is the only possible way, but I read that in order to put a single pixel onto the screen at a location of your choice one has to write something into a place called framebuffer. So ...
0
votes
0answers
19 views

Alternative to ffplay for Raw Video Playback without X Windows

I am successfully capturing frames from a small USB IR camera on the small Raspberry Pi Linux board. I am using the 'libseek' code to do this: https://github.com/zougloub/libseek I can see alot of ...
1
vote
1answer
31 views

Not able to rename root user of MySQL

As part of security hardening, I wanted to remove/rename root user of mysql. While trying I get an error mysql.procs_priv doesn't exist. what is the significance of 'mysql.procs_priv'? Is it ...
1
vote
1answer
16 views

I need dhclient to flush IP address/routes when link goes down

I am running one Ubuntu Server 14.04 with network configuration using /etc/network/interfaces and so ifup/ifdown scripts. I realised that if I configure one interface in DHCP mode, then I unplug the ...
1
vote
1answer
30 views

How do I run a program without network access? [duplicate]

I am making a program that scrapes information from some web services. I want to test how my program reacts when it can't reach the web service, like if the web service is down or if the local ...
0
votes
1answer
16 views

How do I install freeBSD headers ?

I have been a arch linux user for the past 2 years and now moving on to freeBSD for kernel development. I have install freeBSD and want to compile a dynamically loadable kernel module for freeBSD. ...
-2
votes
0answers
23 views

Linux command inside C code: /* treat as comment? [migrated]

In C, I want to run linux command. Namely, int status; status=system("lftp ftp://192.168.1.1 -e "mget -E /2015/Date*/*Snap/*.csv"); The * above is wildcard matching. The C compiler thinks this is ...
-1
votes
0answers
65 views

Unable to get vmware shared folders working in Ubuntu 14.10 Guest

i Installed Ubuntu 14.10 64Bit in VMWare Workstation 10.0.5 within windows 8.1 Enterprise. I installed vmware tools by running the vmware-install.pl script in terminal.But I am Getting an error ...
0
votes
0answers
44 views

Terminal Emulator with CTRL+Scroll Zoom

Are there any Linux Terminal Emulators that offer "control & scroll zoom" (allowing you to adjust the visible size of fonts by holding down ctrl and scrolling your mouse-wheel)? Recently on ...
1
vote
0answers
44 views

add user to group [on hold]

Correct way for add an user to group should be something like this: usermod -a -G groupName userName sometimes (for speed amd comfort) I prefer editing /etc/group and manually add users to ...
2
votes
1answer
38 views

What prevents a reboot?

On Linux, how can I track what prevents a reboot of the system after issuing it via sudo reboot? I always thought that this caused switching the runlevel and in the end the reboot, but now I was ...
0
votes
0answers
16 views

Failed login notification at login

I have seen it before when you log into a Linux box wrong, when you do successfully log on, it notifies you that someone attempted to log on as you and didn't succeed. How is this accomplished? I ...
0
votes
0answers
11 views

LUKS Encrypt volumes during Pidora install on Raspberry PI

I have a Raspberry PI and I would like to LUKS encrypt all volumes during the Pidora install process, but it seems there are no options in the GUI installer to do so. I would not like to add ...
1
vote
0answers
20 views

Apache / OpenSSL configuration keywords `SSLProtocol` vs. `SSLCipherSuite`

According to the Apache docs I can configure the cipher suite with (a.o.) two different keywords and examples on Internet often use both (but not necessarily identical to below example). What is the ...
2
votes
1answer
30 views

set MAC address in “interfaces” file without configuring other network parameters

Under Debian Wheezy permanent network configuration takes place in /etc/network/interfaces file. Is it possible to configure hwaddress for an interface without configuring other network parameters ...
1
vote
0answers
26 views

Retrieve device manufacturer without sudo

I need to retrieve the manufacturer model of a linux device (laptop or desktop). I saw that you could use dmidecode | grep -A3 '^System Information' but it needs admin rights. There is any way to do ...
1
vote
1answer
52 views

cat .bash_history | grep ./configure [on hold]

Why does this not give any output: cat .bash_history | grep ./configure on an system/in an shell where ./configure has been run multiple times. And if I use the arrow key's to scroll the history in ...
0
votes
0answers
14 views

Linux mint 17 /etc/enviroment no_proxy variable ignored by the system [on hold]

I have setup some environment variable on my Linux Mint 17, to avoid that some addresses being used over my office network proxy (squid). Along with others variable I setup the no_proxy one like ...
0
votes
6answers
46 views

How can I use grep to search only on the first line of files for a specific string?

How can I use grep to find a string in files, but only search in the first line of these files?
0
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0answers
18 views

asking administrative permissions for remote console session while logging

Errot:to log on to this remote console session you must have administrative permissions on this computer. this error in specific Redhat system. from other systems its working.
0
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0answers
6 views

How to set up Qmail to accept joining email list via Mailman LISTNAME-join@DOMAIN?

My configuration: CentOS 5.8, Plesk 11.0.9. I am trying to make my mailing list accept another way of joining a list. That is to join the Mailman mailing list by sending email to ...
1
vote
1answer
152 views

how to check the string is Null or not in shell script? [on hold]

I had a script like this #!/bin/bash line="hello" if [ -z $line ] ; then echo "String null" fi This will work properly, but when I give the lineas follows ...
0
votes
1answer
13 views

Why does aptitude markauto uninstall my package?

From the aptitude help: aptitude 0.6.8.2 Usage: aptitude [-S fname] [-u|-i] .. snip .. markauto - Mark packages as having been automatically installed. unmarkauto - Mark packages as having ...
2
votes
0answers
34 views

Persistent configuration of two screens

I want to configure two screens side by side and want the configuration to persist a system restart. (I'm using xfce on Xubuntu 12.) I've inspected old questions and the answers mentioned arandr and ...
0
votes
2answers
27 views

What are some practical purposes for using renice? [on hold]

I'm having a hard time finding a purposeful need for using renice more often, and I would like to know if there are any scenarios in which using process prioritization and adjusting it on-the-fly has ...
1
vote
0answers
27 views

How do I setup a floating profile in Linux

I have an external hard drive that is switched between machines. I want my home folder to point to this external hard drive for ordinary usage purposes - documents, downloads, work areas, that sort ...
0
votes
0answers
16 views

Script for auto-starting programs after restart

Is there any script or program to make all open programs auto start after the system restart? Like the one on the mac that gives you the option to reopen all programs after restart or shutdown
1
vote
0answers
41 views

How to get the Adaptec 1200A to work under Linux at UDMA/100 (instead of 66)

A while ago, I got myself a used Adaptec 1200A controller card to keep my onboard slots free for easier connect/disconnect of drives and now I am wondering why this card will only operate at UDMA 66. ...
0
votes
1answer
23 views

/usr/bin/time cannot execute binary file

I believe I've corrupted the /usr/bin/time executable as when I try to run it, this is the message that shows up: bash: /usr/bin/time: cannot execute binary file It was working till I inadvertently ...
0
votes
0answers
16 views

Linux VNC server that adapts to noVNC client's size?

I want to allow clients to connect to a newly created VNC session on a headless Linux server using NoVNC (Web-based VNC client). NoVNC supports a great variety of clients, which include a great ...
0
votes
0answers
19 views

why do we have same chains in different tables of “iptables firewall” in linux?

why do we have same chains in different tables of "iptables firewall"? Like for example: we have "output" chain in filter table, nat table & mangle table.
1
vote
1answer
28 views

Will most Distros run on an old pentium d?

I am starting out in Linux for my first time and i'm wanting to know if the old Pentium D w/ p35 chipset will be compatible for most distros. It will be my "training" computer as I learn Linux. I am ...
0
votes
1answer
59 views
+100

Serial Port I/O Error on Intel NUC with Debian Wheezy

I have a problem getting Serial Port working on INTEL NUC DE3815TYBE. I have Debian Wheezy installed with kernel 3.16.0-0.bpo.4-amd64. When I do: setserial -g /dev/ttyS* I get: /dev/ttyS0, UART: ...
0
votes
0answers
15 views

bumblebeed unable to start

I am unable to start bumblebeed on my notebook with a GT 745M running Debian. When I try to start the service I get no response before the command terminates and when I try to use primusrun/optirun ...
1
vote
0answers
16 views

Start TCP-based service on demand, and stop it after connection is closed

A server needs to provide several huge (consuming lots of RAM) tcp-based services. What I want to achieve is, that they are started on-demand (lazy), and stopped after either the connection is closed ...
2
votes
3answers
28 views

Rename multiple files to their suffixes

I need a way to rename a couple of files containing spaces. I have: >ls Garbage Foo1.txt Garbage Foo2.txt Garbage Foo3.txt Garbage Foo4.txt ... And I need: Foo1.txt Foo2.txt Foo3.txt Foo4.txt ...