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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0
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0answers
2 views

Why does my program screen dims down?

I wrote a program to run on Linux OS. I noticed whenever I ran the program and clicked on a button to open a window, sometimes the main application screen dims down. This doesn't happen on all the ...
0
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0answers
10 views

Wifi is not working on Linux Mint

I have a Dell Latitude E4310 laptop which ran Ubuntu for the last 4 years (with various versions). Recently I have installed Linux Mint (version 17), and afterwards the WiFi is not working. It was ...
0
votes
1answer
17 views

Cleaning up after installing libary

As part of installing ImageMagick and PDFtk I fetched tarballs and extracted them to my home directory. Went through install process and got both libraries working. If I run which on pdftk or any ...
4
votes
2answers
118 views

What's the difference between poweroff and halt? [duplicate]

To turn off my system, I can use one of these three commands: sudo halt Or: sudo poweroff Or: sudo shutdown -h now What are the differences between these commands, or are they all just ...
1
vote
3answers
80 views

How can I quickly sum all numbers in a file?

Each line contains text and numbers in one column. I need to calculate the sum of the numbers in each row. How can I do that? Thx example.log contains: time=31sec time=192sec time=18sec time=543sec ...
1
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0answers
16 views

what is the default delimiter for sort -k option

What is the default delimiter for sort's -k option? I searched some man page and samples and still feel lost.
0
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1answer
19 views

rysnc not sending over changed files

I am using codeship to deploy my code to my server on digitalocean. I am using rsync to send the code over but it is not correctly sending over the files that have changed or have been added. For ...
0
votes
1answer
483 views

Grub2 lost in new Linux distro install

So, I really need some help. Recently I was using a dual boot machine on the same hard drive. I had Windows 8.1 and Ubuntu GNOME 14.04. When I installed Ubuntu on top of my Windows install, I didn't ...
-2
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0answers
12 views

How to write shell script code for display reserved memory space for application (buffer + cache) [on hold]

Anyone can help me how to write shell script code using the bash shell that perform the following functions: Display reserved memory space for application (buffer + cache). Display real used memory ...
0
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3answers
36 views

how to tell crontab to execute the command from now instantly

I have a command in "/etc/crontab" which runs a database program every 7 days. Now, I see that this command has been commented by another user for 2 weeks. I immediately uncommented the line, and ...
3
votes
1answer
36 views

Linux doesn't drop FS Caches. Instead Memory starts Swapping

I'm quite confused about this behaviour of linux memory caching. total used free shared buffers cached Mem: 15953 14188 1765 64 ...
1
vote
2answers
22 views

Triggering hardware interrupts by connecting parallel port pins 9 and 10 does not work

I want to trigger hardware interrupts as described in the book Linux Device Drivers by connecting pins 9 and 10 with a wire. I tried that but apparently there's no interrupt beeing triggered: cat ...
0
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0answers
7 views

Cylon Linux stuck on loading screen?

So, I have been trying to get a Linux distro for a while now called Cylon Linux. I heard about it from a website and looked into it. I downloaded the .iso file and burned it to a disk. I tried to boot ...
0
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0answers
4 views

How to transform a LFS system it to an (iso) installable system or live cd? [on hold]

I want to make my own lieux distro from scratch I want to build the kernel then crosscompile the kernel.. But my big problem is how I’ll make it installable after building it? (like Ubuntu, arch, deb ...
1
vote
0answers
41 views

Linux randomly hibernates [on hold]

I'm facing some issues with Linux (Fedora and Ubuntu). First of all, when I installed Ubuntu it was sort of hibernating when booting then I installed Fedora, everything works fine, but when I boot the ...
0
votes
0answers
20 views

tool/ways for converting .db file from big endian to little endian in linux machine

We have an "example.db" database file from a Solaris machine which has big endians. This database is proprietary not an Oracle/Sybase/MYSQL so no possibility from that end. How this file can be ...
3
votes
1answer
29 views

Auto disconnect from WLAN if unused

For Nokia N900 there is an app called AutoDisconnect which monitors the WLAN usage and closes the connection if the traffic is very low. I'd like to have something like this on my future notebook in ...
0
votes
0answers
13 views

systemd kill my processes before ExecStop completed

I'm trying to update my application to use it with systemd. When I have used Upstart, I've just create a /etc/init.d/myService script: #!/bin/bash #chkconfig: 2345 90 10 #description: myDescription ...
1
vote
0answers
38 views

Unable to mount a partition on an SSD over USB

I'm trying to mount a 120GB SSD connected externally via USB to the new server. The SSD is full of data and I can't format it. mount /dev/sdd1 /mnt/sdd1 mount: wrong fs type, bad option, bad ...
0
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0answers
42 views

How to make a fifo in C? [migrated]

I have to use mkfifo in my C program in Ubuntu. But I have an error when I compile: no such file or directory . I think the problem because I have not set the panel_fifo environment variables. But I ...
0
votes
1answer
433 views

Capstone for Python not working

I'm unable to get Capstone for Python to work. I have attempted to install capstone both using pip and compiling and installing from source. Both are successful, no errors, but neither works. I've ...
0
votes
2answers
73 views

SSH authenticity couldn't be established

Last night I SSH'ed to different systems.... one system/SSH reported that the "authenticity of HOSTNAME couldn't be established......." and it asks if I want to continue or something, I didn't and ...
2
votes
0answers
26 views

Thread running between fork and exec blocks other thread read [migrated]

While studying the possibility of improving Recoll performance by using vfork() instead of fork(), I've encountered a fork() issue which I can't explain. Recoll repeatedly execs external commands to ...
0
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0answers
3 views

Problems MBR and GPT Partitions on a Linux Host on SLPOS

Ive a Host loaded with SLPOS Image from a SLPOS Branch Server (SuSE Linux Point Of Service) and i want to handle this issue, when system boots it download a PXE who does a check of a several checks ...
0
votes
1answer
20 views

“fdisk -l” output: what are Disk label type“ and ”Disk identifier"

fdisk -l output: . . Disk label type: dos Disk identifier: 0x0006a8bd . . what are Disk label type" and "Disk identifier" Also, apart from the manuals, where else can I find more information ...
3
votes
2answers
230 views

How to check Linux kernel?

I want to install a package, and it has different versions for different OSes. The description in the package site is like this X86-64 Linux 3.0 Kernel I looked it up and found people saying to use ...
0
votes
0answers
8 views

Linux Mint 17.1 Mate stops responding

I was using LM 17.1 Mate version quite smoothly until one day I found my desktop wallpaper had changed to the original. Then after refreshing for 2nd time it keeps on refreshing and it seems that my ...
10
votes
2answers
267 views

Unable to copy large file onto ext2 usb stick [on hold]

I have an 8G usb stick (I'm on linux Mint), and I'm trying to copy a 5.4G file into it, but getting No space left on device The filesize of the copied file before failing is always 3.6G An output ...
3
votes
1answer
535 views

USB keypad (HID) not responding in linux but in grub

An external USB keypad I'd like to use gets recognised as a USB HID device, but it is not functional when Linux is booted. It does work when plugged into a Windows desktop and it does work while in ...
7
votes
2answers
2k views

Making UDEV ignore certain devices during boot.

I'm trying to make UDEV stop mounting one of my devices at boot time, and I've created a rule in /etc/udev/rules.d/ called 1-myblacklist.rules. All the rule does is matches the device by kernel ...
0
votes
1answer
31 views

Hyphen/Dash “-” Symbol's use in Linux bash /dir + GRUB booting for newbs

I am attempting to complete this GitHub tutorial on creating a custom GRUB loader for a stubborn Asus Win8.1 laptop on which I am hoping to install Ubuntu: ...
4
votes
2answers
897 views

Benefiting of sched_autogroup_enabled on the desktop

I am running a 2.6.37 kernel with sched_autogroup_enabled set to 1. I am not certain that I am seeing the benefits of this patch since: I am launching my applications from the desktop; applications ...
1
vote
3answers
35 views

I can not install MySQL using yum on Centos7

I've installed centos7 recently, but, when I am trying to install MySQL using the command: yum install mysql-community-server I keep getting Exiting on user cancel while I am not hitting any ...
1
vote
2answers
43 views

tunnel rsync:// protocol over ssh

on my LAN (debian server, windows client) I use rsync:// protocol with this code cwRsync\rsync.exe -avLP --force --append-verify rsync://rsync-usb@server/rsync-usb/* usb/ I have read, that rsync in ...
2
votes
1answer
1k views

Unable to use yum repos whether with baseurl or mirrorlist in CentOS 6.5

Since a couple of days, I'm unable to retrieve repositories data with Yum, in my CentOS 6.5 server. I did yum clean all a dozen of times, it emptied all but didn't solved the problem. I tried to ...
1
vote
2answers
33 views

Midnight Commander - editor in hex mode

I can't find a way to toggle mc internal editor in hex mode. Here it says to use F4 however it suggest to replace. How to do it?
0
votes
0answers
18 views

Error on login on Ubuntu 14.04 [on hold]

Now,before I begin,be prepared for a lot. I am having a on-login problem that, when "send a report" is clicked, goes away. But after a minute or two, I get a whole lot of mess of errors. Here is my ...
0
votes
0answers
6 views

Parrot Security OS Does Not Play Sound? [on hold]

I use a distro of Linux called Parrot Security OS. I have recently noticed that the sound on it refuses to play in any sort of way. I have tired muting then un-muting. I have used the advanced ...
2
votes
3answers
125 views

Tool to generate TCP traffic

I want to generate a TCP traffic starting from the port 0 to the port 65535. 1 tcp packet for each port with 1ms between 2 packets. The generator should not care if there is a TCP ACK or not. Are ...
0
votes
0answers
79 views

Linux WinPower Setup

I am currently installing the WinPower UPS communication software but I am running into an error. I have installed it successfully without errors. ./agent start starts agent ok ./monitor this ...
0
votes
0answers
22 views

“Kernel panic – not syncing: VFS: Unable to mount root fs on unknown-block” and “LZMA data is corrupt”

I recently bought a new computer and I am experiencing problems while trying to install Linux. Things I have tried: A variety of distributions: Ubuntu; Elementary OS; Crunchbang++; Manjaro; and ...
3
votes
2answers
53 views

Convert binary mode to text mode and the reverse option

By the following way I convert a simple binary file into a text file od –t x1 Check.tar | cut –c8- > Check.txt What is the opposite way to convert the Check.txt to Check.tar as the original file ...
2
votes
4answers
50 views

How to hold terminal open (excepting gnome-terminal)?

I find useful the gnome-terminal feature of editing (and creating) profiles with the option of holding the terminal open after the command exists. (I like to use context menu file manager to run ...
0
votes
1answer
34 views

Linux distros: Which one suits me? [on hold]

I decided to use Linux alongside MS Windows so I read some articles for beginners and I installed Linux Ubuntu 14 LTS. Less than one month, it crahed and became unfunctional after an upgrade process ...
3
votes
1answer
31 views

What happens when a tmpfs volume is full and swap is full? Is Linux's OOM-killer involved? [duplicate]

I understand that if a persistent / disk-based volume is full, files need to be explicitly deleted to free up space before more can be added. Further, I understand that if memory is exhausted, the ...
1
vote
2answers
23 views

Depends: libqtgui4 (>= 4.6.2) but it is not installed

I want to install the Wing IDE for python. When I executed it, dpkg showed me some qt packages that were not installed. I installed a few of them via Synaptic Package Manager, but the rest cannot be ...
1
vote
2answers
29 views

Using another's device resources for software execution

I have an old weak laptop (core duo at 1.7Ghz) and a quad core phone(arm cortex a7). Both are running linux. Could I use phone's resources from laptop to execute(process) stuff for laptop? Is there ...
0
votes
1answer
26 views

Is it possible to install RHEV on el6 clustered computer

Is it possible to use Linux (el6) clustered computer can be used as a hypervisor for RHEV 3.3/Ovirt 3.3? Cause, we can not combine RAM/CPU from two or more hypervisores to be considered as a one ...
0
votes
1answer
215 views

vdsm service won't start

I am currently evaluating Red Hat Enterprise Virtualization and have managed to set up the management server and the bare metal hypervisor. Now I'm trying to add a regular box running RHEL server 6.5 ...
1
vote
1answer
20 views

Random crashes on XFCE - how to diagnose what's happening?

I'm on Parabola (a fork of Arch), and I'm running the XFCE desktop environment. However, I periodically get these weird crashes, where my entire desktop freezes. I have no ability to move my cursor ...