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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How is user space process/thread controlled by the operating system

I understand this: User code executes in a process/thread context in a process address space, in user mode, and can address only user code/data defined for the process, with no access to privileged ...
5
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0answers
54 views

USB HDD not working on linux

I have a WD My Passport 1 TB external hard drive which is giving me some problems on different linux machines: When I plug it in, nothing happens Gparted when detecting connected devices says "Error ...
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0answers
33 views

Installing CentOs 6 with Direct Admin

I'm trying to install CentOS with a Direct Admin package. I have done it almost 10 already times but this time I can't get it to work. I've written down all of my steps here: Give root password: ...
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0answers
11 views

OpenSwan - Cannot Reach Subnets other than my own

I have replicated a working VPN server hosted on AWS, it's has practically almost the same configuration but for the range of IP's delivered. I'm connecting to it through a MacBook (created a VPN ...
2
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3answers
60 views

Linux: set date through command line

How to change the system date in Linux ? I want to change: Only Year Only Month Only Date Any combination of above three
2
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0answers
30 views

How to mount squashfs (embedded-linux) on Ubuntu?

I have tried to mount a filesystem from a firmware (embedded-linux) but it failed on my Ubuntu 12.04 machine. Could you tell me how to mount that file system? (or possible reasons of the failure). ...
2
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2answers
51 views

find out the memory allocated for a particular process in ubuntu

Could anyone please tell me how to find out the memory allocated for a particular process in ubuntu?
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0answers
30 views

Set persistent permissions for /var/log/boot.log

Every time I reboot my CentOS 6.5 computer, it writes the boot log to /var/log/boot.log. The permissions on this file are always 644 after a reboot. I want the permissions to be 600. When I change the ...
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0answers
19 views

Become root after login via plink from Windows host

I m trying to connect to a linux server from Windows host via plink. I couldnt figure out how to become root after logon. I have to login with ordinary user first as I can't change config of the ...
0
votes
1answer
39 views

How do I count the total number of unique strings from a file using linux [closed]

In File1: OrderChange[a.1],partition=ORDER OrderChangeResponse[2.b],partition=ORDER I used below cmd getting output as 2 but it should be 1 as OrderChange in above file is 1. cat File1|grep -i ...
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2answers
35 views

How to set cron job for system

I'm really new on Linux and have no any previous experience on it. And I opened this account to ask this question. I need to install a cron job I've followed the short guide here. Well, I think it ...
1
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3answers
44 views

Suppress warning from ps -aux on Linux

When I run the ps command i get a warning saying Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.7/FAQ. How do i suppress this warning? Is there some system setting that i ...
1
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0answers
18 views

RTC is not saving time after hwclock

So I'm having quite a bit of trouble trying to get my system to set the hardware clock's time. Here is what I did just now, everything has worked, right? The first and last command seem to indicate ...
0
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0answers
13 views

Why would attempts to bind affinities for rcu kthreads fail?

I am trying to get full tickless mode working on my box on Ubuntu kernel 3.10.39. I am running the following command: for i in `pgrep rcu` ; do taskset -pc 0 $i ; done It seems to work on some of ...
0
votes
2answers
40 views

Is it safe to format this extended partition?

On a ubuntu server I own, I am running out of space. When I ran sudo parted /dev/sda -l to find all available drives, I got this: Model: ATA ST31000528AS (scsi) Disk /dev/sda: 1000GB Sector size ...
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0answers
13 views

Permission denied when trying to write to a file in /sys directory [duplicate]

I'm trying to manually set the speed of the fan on my Macbook Pro 7.1 which is running Crunchbang Linux Waldorf. I'm following the instructions in this blog article ...
0
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0answers
11 views

Determin if the currnet terminal has a dark or light theme [duplicate]

I have several (Bash) scripts that uses ASCII color codes. They look good on my dark themed terminal, however on my colleagues light themed terminal the colors I selected don't look that good. Is ...
0
votes
1answer
14 views

Multiple file systems on BeagleBone Black?

I'm trying to put together a BeagleBone Black using Debian on the EMMC, a separate MicroSD card and a flash USB disk (but could ostensibly be platter media on USB). My question, simply put: are there ...
1
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0answers
15 views

Setting up touch driver to run through service

We are trying to integrate a touch panel to our Debian system. Touch driver (General touch) I am trying to run this application in Linux service.Below are the steps which i followed Driver ...
2
votes
1answer
25 views

How does chroot's use of qemu for cross compile environments work?

To be able to do cross compiling there's a trick where you copy a static qemu binary into your <different-arch-root-to-be>/usr/bin and when you chroot into that filesystem, which has non-native ...
0
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0answers
9 views

Alternatives to Symphony OS Orchestra Application Environment

I just read that Symphony OS has an wonderful concept, called Orchestra, where applications (can be even written HTML + JAVAscript) can be ran via a reduced localhost server and a leaned down mozilla ...
0
votes
1answer
26 views

Battery standby [closed]

I am using a lenovo z570 laptop. In windows I am able to use the laptop for around 2.30 hrs in normal usage.But when I use any Linux distro the battery drains a lot faster. I am able to use only for ...
7
votes
1answer
102 views

Why are rmdir and unlink two separate system calls?

Here's something that kept me wondering for a while: [15:40:50][/tmp]$ mkdir a [15:40:52][/tmp]$ strace rmdir a execve("/usr/bin/rmdir", ["rmdir", "a"], [/* 78 vars */]) = 0 brk(0) ...
1
vote
1answer
37 views

How to migrate from Proxmox to VMWare?

I am wondering how it is possible to migrate a full hardware VM in Proxmox (qemu) to a full hardware VM in VMWare (vmdk). I have been searching all over the place, and it seems almost impossible to ...
1
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0answers
28 views

Disable processor speed changes on AC vs battery [closed]

My Toshiba Satellite L300 laptop freezes when I plug in the AC power cord. The problem is, whenever the processor goes in power management or downclocks, the system freezes and shows colorful ...
0
votes
1answer
37 views

What are the differences between socket polling mechanisms of kqueue and epolling?

kqueue socket polling mechanism is used in FreeBSD and epolling in Linux. I would like to know what are the differences between the two mechanisms?
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0answers
65 views

Fixing System boot failure due to GRUB Error

We have a Debian based system, which unpredictably goes in to non bootable mode. Listed are the errors that usually occurs in the system. 1 > GRUB RESUE 2 > INTIRAMFS 3 > INIT SCRIPT FAILURE ...
0
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0answers
22 views

Arch Linux KMS loading i915 early tty doesn't show

I am on Arch Linux x64, on EFI, Nvidia Optimus with bumblebee (so i am using intel driver) and I am trying to show a splash screen at boot. I have chosen plymouth (other than being the more famous ...
1
vote
1answer
21 views

Wine and parallel processing

I'm quite new to linux, right now, running LMDE on my machine. I was wondering if wine can support the parallel processing needs of some software. Anyone knows any performance benchmark of wine ? ...
0
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0answers
12 views

Linux fullscreening video

So I can only fullscreen some certain sites' videos. Youtube works sometimes as does another (entertainment) site. Both are using Flash, I do not have YT set to use HTML5. Clicking fullscreen ...
1
vote
1answer
45 views

Using upstart with stop unknown instance

I'm just getting into upstart so i wrote a very basic script just to print to log file called: vm-service.conf that I put in /etc/init: description "Virtual Images" author "Me" start on ...
3
votes
1answer
33 views

Error with gedit can't save any file

meraj@meraj-SATELLITE-C850-A785:~$ sudo gedit /etc/php5/apache2/php.ini (gedit:16243): Gtk-WARNING **: Calling Inhibit failed: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name ...
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0answers
17 views

I am getting nova issue when i ran #nova image-list

I am newer to the openstack, and I am following the link http://openstins.tiddlyspot.com , everything goes smooth but when i ran below command i got error as below. [root@centos6-2 init.d]# nova ...
6
votes
1answer
14 views

Linux kernel 3.10.0-123.4.2 processes [flush] aren't present

I am using CentOS 7 with "3.10.0-123.4.2.el7.x86_64" version, but I don't know why the kernel threads named flush aren't present in this kernel version. I tried to look in the kernel change log, but ...
1
vote
1answer
24 views

Cannot ping machine on eth0; Pings fine on wlan0; Centos 6.5 on Dell D610

I recently installed Centos 6.5 (32 bit) on an old Dell D610. It has both a lan port and a wifi. When I assign the wifi a static IP, I can use it as a server, connect to it from other machines etc ...
3
votes
0answers
31 views

How Does X build its modelist?

I have an embedded board running Linux 3.0.35 and X.Org 1.14.4. I'm modifying an existing framebuffer driver to support a new connector type. I'm reading the EDID, creating a new modelist using the ...
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0answers
31 views

Installing a D-LINK dwa-131 wireless adaptor on Linux

I am new to Linux and a complete novice, I have just installed Linux Ubuntu on a desktop, I want to use a wireless adapter for my internet connection. The model is a D-Link DWA-131 Nano wireless ...
0
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0answers
26 views

Setting fbcon to use a specfic frame buffer device

I am trying to display the output from and SDL based application on to a framebuffer device /dev/fb1. Fb1 is associated with a SM750 based card. When I run my application, the output always appears ...
2
votes
1answer
27 views

mounting/converting v2i image in linux

Is it possible to mount a v2i image in linux? Is there any mount.v2i program? Or is there any convertion tool to convert v2i image to something else like iso ? How can i Mount/Convert a v2i image? ...
0
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0answers
16 views

LVM: possible to recover full snapshot?

Accidentally, I have let a LV snapshot created by libvirt/virt-manager run to full. Is there any way I can at least recover (some) data written to the snapshot? Many thanks! lvs ...
1
vote
0answers
22 views

How to customize Linux without sudo/root access? [duplicate]

I'm a newbie in Linux but I love it for its customization potential and want to use it as much as possible. In my company I do not have sudo or root access to the Linux server but I still want to ...
0
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0answers
21 views

impossible to make fsck

I'm trying to make a fsck to a pendrive and it says me: e2fsck 1.42.8 (20-Jun-2013) Pass 1: Checking inodes, blocks, and sizes Error reading block 40402759450689 (Invalid argument). Ignore error? ...
0
votes
1answer
38 views

Gallium renderer used instead of Intel Mesa

I have got GPU (Intel Haswell HD4600) performance troubles on my Debian. I installed driconf, because I read it can help. When I ran it from my user account I saw my default renderer is Gallium ...
1
vote
0answers
11 views

Top forest view with filter, can I include all children?

If I'm using top in "forest" mode (V) and I restrict by PID (o PID=12345), can I also get top to show all the child processes in the same view? Ubuntu, top from procps-ng version 3.3.9
-1
votes
1answer
38 views

to make password less login to same linux server with same user [closed]

I have performed below steps to make password less login ssh-keygen -t rsa copy ~/.ssh/id_rsa.pub into authorized_keys chmod 600 ~/.ssh/authorized_keys but still unable to make password less ...
4
votes
3answers
96 views

Passing arguments from one command into the next

I'm trying to write a script to unify two separate commands I run by hand into a single bash script I can then cron. The first command is a simple find on files with a certain name and size find ...
4
votes
1answer
68 views

How to compile programs on Linux systems when I don't have sudo privileges to install the dev dependencies [duplicate]

How should I go about compiling programs that depend on libraries whose development packages (headers and such) aren't pre-installed on the system when I don't have sudo access? In this particular ...
2
votes
0answers
42 views

Difference between 'sar' and 'iostat' commands

With sar and iowait, we can get CPU time utilization. But, when I executed both commands, I could see significant differences in their outputs. > iostat && sar 1 1 Linux ...
2
votes
0answers
18 views

Defining Languages Available at boot - LiveCD

I am trying to create a refined version of the buggy uck for customizing Ubuntu LiveCD ISO, here it is if you're interested in helping. NOTE: The process is straight-forward, except when customizing ...
0
votes
3answers
42 views

how to disable time sync in VM guest?

I have a desktop (centos 6) that has a VM guest (RedHat 5.5). I just try to set the date to past time in VM guest. And it works. However, after 50 minutes, the time is sync to current time. After I ...