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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6
votes
1answer
848 views

Avoid very fast double clicks

I have a mouse with a weird problem. The left button sometimes fires a double click even if I click just one time. I would like to know if there's a way to avoid fast double clicks, ignoring clicks ...
-2
votes
2answers
34 views

New to Linux. Working out what commands do [on hold]

How do I find out what commands such as LS do? I have recently been trying to write my first code and have became stuck with command names any help would be appreciated.
0
votes
0answers
2 views

how to set static ipv6 ip address to embedded linux board using ifconfig(busybox)?

We want to set static ipv6 ip to custom embedded Linux board. So far we could enable ipv6 in linux kernel and busybox. We could test that kernel is ipv6 ready. We tried to configure static ip using ...
-1
votes
0answers
7 views

SCP file from remote unix server to local windows server using putty

I'm working on heighly restricted environment. Here I can't install any new tools or cant even make any config level changes. But I need to download some files from a remote unix server to my local ...
3
votes
1answer
38 views

problem when booting linux server : Too many levels of symbolic links

By mistake, I executed these commands : sudo ln -sf bash /bin/sh sudo ln -sf bash /bin/bash When I rebooted the Linux server in recovery mode I got this message: unable to execute: Too many levels ...
3
votes
5answers
5k views

Copy specific file type keeping the folder structure

I have a folder structure with a bunch of *.csv files scattered across the folders. Now I want to copy all *.csv files to another destination keeping the folder structure. it works using: cp ...
0
votes
0answers
9 views

How good is ARBTT(Automatic Rule Based Time Tracker)? Is there any alternative for it?

ARBTT is a rule based time tracker. I was able to write small scripts to log what I do in system. But I was not able to understand how effective is it. Is there any good article preferably any blog ...
-1
votes
1answer
20 views

New to linux, learning shell scripts [on hold]

I am trying to teach myself to write Shell Scripts on my Raspberry Pi, but I am struggling to make a menu where a user can choose from these different options: •display a list of current users ...
3
votes
1answer
481 views

cleaning /dev/md0 filesystem ( raid)

I have a CentOS server using raid. The /proc/partitions contains: major minor #blocks name 8 0 976762584 sda 8 1 104391 sda1 8 2 921600855 sda2 8 3 55054755 ...
0
votes
0answers
12 views

Resources for learning Linux [on hold]

I'm new to linux. I know the basics, like moving from one directory to another and simple things like that. I need to learn the following things: - directory structure (where are the logs, ...
1
vote
5answers
51 views

Rename a portion of multiple files

Take a number of files named: data_a_LT.fits data_a_LT.coo data_a_LT.ec data_a_LT.grp I want to replace all "a_LT" with "LT_A" such that I have: data_LT_A.fits data_LT_A.coo data_LT_A.ec ...
0
votes
0answers
20 views

Finding Out Serial Port Address in Linux?

I've CCT-910 serial port hub and wh EMP 800 coin acceptor. Coin acceptor is connected to hub, and hub to computer. They're both using same serial port (/dev/ttyUSB0 in Ubuntu 14.04), but their ...
0
votes
0answers
7 views

Mount JFFS2 FS in openwrt

I'm trying to mount 1[MB] of flash as JFFS2 FS in openwrt environment, using 128[MB] NAND flash (4 bit ECC). I'm using the following sequence - flash_eraseall -j dev/mtd6 mount -t jffs2 -o noatime ...
0
votes
0answers
4 views

How to upload a modified centos in Amazon marketplace

I want to upload a modified centos in amazon aws marketplace.I already have aws account. What is the process for that.
0
votes
0answers
3 views

Linux - Install Wireless Card Driver

I trying to install a wireless LAN driver in my aircrack-ng v4 Virtual Machine but failed. I downloaded "iwlwifi-6000g2b-ucode-17.168.5.2.tgz" for my Chipset (Intel Centrono Wireless Card 1030) and ...
4
votes
2answers
758 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 ...
2
votes
2answers
37 views

How to run the dialog command with proccess?

NOTE: Please look at my code, it's a Bash script. I want to display both dialogs on the screen at the same time, one dialog displays this: tail –f from - /var/log/proccess1.log and the second ...
0
votes
0answers
20 views

How to check what is slowing down all processes on a machine?

I have a strange issue. When I deploy using vmbuilder a virtual machine on my local computer, the deployment happens to be fast, and the scripts run after the deployment are fast too. When I deploy ...
3
votes
1answer
367 views

Laptop keyboard occasionally stops working

I have a dirty solution that is to plug a USB keyboard in and execute the following command: setxkbmap -rules evdev -layout us -model evdev Afterward my keyboard will work. This solution only ...
3
votes
1answer
452 views

snmpwalk community results to timeout

My snmpwalk suddenly stopped working, which was working earlier, after restarting the snmp also didn't work out, snmpwalk -v1 -c gives me timeout and it's working for other machines as well. I tried ...
3
votes
2answers
64 views

How is the real-time priority of a process set by default?

I understand that, for scheduling purposes, Linux processes have a "nice" value and a real-time priority value and that these can be explicitly altered with the nice and chrt commands. If the user ...
3
votes
1answer
358 views

cpufreqd does not control temperature plus shows no output

Since my laptop (an Acer Aspire 5750G running a Gentoo Linux with a not-quite-up-to-date kernel 2.6.39-r3 (a weird wLan hardware makes the update difficult)) tends to run rather hot I am trying to ...
0
votes
0answers
20 views

Does the timeslice depend on process priority or not under Completely Fair Scheduling?

I'm trying to understand the Completely Fair Scheduler (CFS). According to Robert Love in Linux Kernel Development, 3rd edition(italics his, bold mine): Rather than assign each process a ...
3
votes
4answers
2k views

Dual boot - Kubuntu and Windows 8 - how to?

I recently installed Windows 8 on my computer. These are the specs: Fx-8150 CPU 8 GB RAM ATI HD7870 120 GB SSD 2 TB HDD Mainboard: Gigabyte GA-970A-UD3 (rev 1.1) (only bios but EFI mode possible ...
0
votes
0answers
6 views

Waking nm up from sleep

nmcli g shows state: asleep. But since nmcli 0.9.10 it is no longer possible to wake up the network manager with sudo nmcli nm sleep false How do I wake it up in the new API?
1
vote
1answer
523 views

Capture raw image from V4L (webcam) device

I'm using a Raspberry pi to monitor a self-service fridge. When the door opens, a shell script is being executed to capture pictures until the door closes again. The problem, however, is the speed of ...
0
votes
1answer
16 views

Kali Linux wifi issue

I've just installed a linux Distro (Kali) and this is the only place I know to come for help with it. I installed Kali on my Compaq laptop, as it's the only laptop I have and won't use my windows ...
3
votes
2answers
468 views

Having trouble exporting FUSE via NFS

I've got a self-written FUSE file system I mount on my NFS server on mountpoint /export/example/mount. Then I export a parent directory of the FUSE via NFS. The /etc/exports contains the options ...
1
vote
1answer
12 views

split one partition into two using cfdisk (will uuids on other parts stay the same?)

I currently have various linux partitions on sda3-13. If I delete sda6 and create two new partitions using cfdisk I get sda3-14. I have /home on sda7 and / on sda11 which will then become sda8 and ...
0
votes
1answer
2k views

How to remove Oracle Wallet using orapki?

Hi i'm on Centos using oracle 11g And i've created a wallet using : $ orapki wallet create -wallet /u01/app/oracle/admin/DB11G/wallet -pwd WalletPasswd123 -auto_login Now i want to remove it to ...
4
votes
1answer
404 views

Gentoo Live CD from Hard Drive: No Mountable Filesystems on root after modules loaded

I am attempting to install Gentoo on my PowerPC Mac. I have reached the point where I can boot the Live CD (I have no functional CD Drive, so it is from a spare Hard Drive), but after the kernel is ...
-3
votes
0answers
12 views

Find Locations of a Letter In Linux Command [on hold]

Hey guys i need to Find out all locations of the word ttt in a file must find words containing "ttt" three t's consecutive can someone help me .
2
votes
3answers
138 views

On an Apple Keyboard under Linux, how do I make the Function keys work without the fn modifier key?

I use an Apple wired keyboard on Linux. By default the function keys (F1, F2, F3, etc) require the fn key to be pressed for them to work. Without the fn key, these keys control the features like ...
0
votes
0answers
14 views

OpenSSL 1.0.1j - upgrade on RHEL 6.5

I got a problem when I upgrade my openssl on rhel 6.5. The openssl is missing libcrypto.so.10. The openssl 1.0.1j created lib is libcrypto.so.1.0.0. I have made a soft link but it still does not work ...
1
vote
1answer
39 views

Deterministic method to find out whether some other process is in a chroot jail and where?

NOTE: I'm familiar with this U&L Q&A titled: How do I tell I'm running in a chroot? that sounds similar to what I'm asking, but there's a subtle difference to what I'm looking for. That ...
1
vote
2answers
897 views

PPTP VPN in CentOS 7

I recently installed CentOS 7 (Gnome), but I realized that there are no options for setting up a PPTP VPN client. I tried to install networkmanager-pptp-gnome, but unfortunately it's not available in ...
1
vote
1answer
21 views

Grub Legacy - Auto select boot option

When booting I am presented with a Grub option list consisting of two entries Gentoo Linux x.x.x Gentoo Linux x.x.x.(rescue) The highlighted entry will be booted automatically in 30 seconds. How ...
1
vote
2answers
934 views

Discrepancy between reported used memory and sum of application memory usage

I'm running a desktop system that quite regularly suffers from lack of memory, this prompted me to investigate what causes the issue in the first place. Problem is, there's no single process that ...
5
votes
1answer
78 views

Whats the history behind the fork bomb?

I read other question about its work and other things that Fork bombs operate both by consuming CPU time in the process of forking, and by saturating the operating system's process table. A basic ...
17
votes
1answer
20k views

recursive mkdir

Is there a linux command that I'm overlooking that makes it possible to do something along the lines of: (pseudo) $ mkdir -R foo/bar/zoo/andsoforth Or is there no alternative but to make the ...
1
vote
0answers
18 views

How to fix disabled monitor after linux mint 17 xfce desktop boot and mei_me timeout?

When I boot into my desktop, my monitors go into power save mode and the communication between the monitors and the graphics card radeon x1650 is disabled? When I press ctrl+F2 or ctrl+F7 I receive ...
30
votes
8answers
4k views

Easy way to determine virtualization technology

I have command line access to a Linux machine which may or may not be virtualized. I want to determine what kind of virtualization technology it runs on, if any (VMWare, VirtualBox, KVM, OpenVZ, Xen, ...
2
votes
1answer
467 views

Memory management - how memblock_reserve works

I am new to Linux kernel and I am studying the Linux memory management framework. I have few doubts on this. I am working on Marvel PXA986 boards and in board file I can see few memory reservation ...
4
votes
3answers
687 views

Access point (with hostapd) on the same interface as the network/gateway?

I wonder if it should be possible to have an wireless access point using hostapd (as described in Set up an access point) on the same interface that connects to a wireless network for internet. I ...
11
votes
3answers
601 views

On system memory… specifically the difference between `tmpfs,` `shm,` and `hugepages…`

I've been curious lately about the various Linux kernel memory based filesystems. Note: As far as I'm concerned, the questions below should be considered more or less optional when compared with a ...
3
votes
0answers
3k views

Installing Elementary Isis beta

How can I install Elementary OS Isis Beta? I tried to made a bootable stick using the latest iso builds but for some reason I cannot login. Having elementary OS installed on my machine, how can I ...
0
votes
1answer
296 views

Opendns setup failed. How to fix it?

I have problems trying to configure OpenDNS. I have contacted OpenDNS support but they did not answer. I cannot access websites like Twitter and Facebook. I tried welcome.opendns.com (did not ...
-2
votes
0answers
25 views

how to run virtualized kali linux on bootable usb [on hold]

Please advice me how to run virtualized kali linux on bootable usb? If there is a way, its possible with which one of Virtualization softwares? In Vmware is it possible? Any way to change all serial ...
-1
votes
0answers
30 views

Forensic Linux distributions? [on hold]

Review between there distributions; 1. Kali 2. Caine 3. (SANS Investigate Forensic Toolkit (SIFT 4. DEFT Linux 5. Matriux 6. Masterkey Linux 7. Swift Linux 8. GRML Live Linux 9. Plain Sight 10. ...
2
votes
1answer
2k views

how to disable USB devices based on vendor id in Linux environment?

I want to disable usb devices based on vendor id in Linux environment. I want to allow only specific USB devices, based on vendor id.