Linux refers to the family of Unix-like computer operating systems using the Linux kernel. If your question is about a certain distribution only, use a more specific tag.

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/etc/shadow and /etc/passwd privilege - why is it writable

sghk1> id uid=0(root) gid=0(root) sghk1> ls -l /etc/shadow -r-------- 1 root sys 4045 Aug 24 15:52 /etc/shadow sghk1> ls -l /usr/bin/passwd -r-sr-sr-x 1 root sys ...
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1answer
32 views

is there any way to completely avoid boot problems when multi booting [on hold]

I myself always wondering that there should be a way for multibooting that no booting problems occur. Assume that I have this HardDrive: Partition1 C Primary 200GB Partition2 D ...
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2answers
18 views

Cron expression hour 1/12

I'm looking at a system where someone added a cronjob which schedule is like this: 0 1/12 * * * doSomething More commonly, if the hours part in the schedule were */12 then it would execute every 12 ...
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1answer
16 views

Signing Error during kernel compilation

I was trying to compile kernel on my system by following this link http://www.ramkitech.com/2012/04/how-to-compile-kernel-step-by-step.html when I run make command, I am getting the following error ...
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1answer
18 views

How to remove pattern containing blank space and special characters in sed

How to remove following words from a text file: DEFAULT ('') DEFAULT ((0)) DEFAULT (((1)/(1))/(1900)) DEFAULT (getdate()) I am not able to delete above four pattens using sed.
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0answers
20 views

GRUB multibootloader issues, Kali Linux

I am having a massive amount of trouble getting GRUB to setup multi-boot on my computer, I have 3 seperate drives, one with Windows 8.1, one with Kali Linux and one with OS X Install which is ...
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0answers
10 views

BTRFS, Files on a single drive in array but keep 2-parity?

Is it possible to setup a BTRFS array of disk but tell it to keep files on individual disks instead of stripping them and still keep a 2-parity? The idea is that if three drives die, the files on the ...
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1answer
33 views

Kali 2.0 multiple issues

I've been experiencing a lot, and I mean, A LOT of issues with Kali 2.0. Have researched the Kali forums, the Internet and even people around that have experience in Linux (especially BackTrack 5). ...
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0answers
16 views

Can one achieve directory permissions on Android? [migrated]

On any android device 99.5% of the apps want the permission "Write / Read contents of SD card" in a combination with "Full network access". Theoretically these 2 permissions are enough for the app to ...
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0answers
12 views

how to make less pager respond to scroll wheel and not clear the screen

I know about answers like how-to-make-mouse-wheel-scroll-the-less-pager-using-bash-and-gnome-terminal, which is to remove the -X flag from the $LESS environment variable. But I would like to do both ...
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0answers
13 views

Linux Mint - Deleted Bottom Panel - How To Un-Delete?

So, being the explorer I am, I accidentally clicked the wrong thing. The Panel at the bottom of the screen on Linux Mint using Cinnamon Desktop, I right clicked and selected either delete or remove ...
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0answers
37 views

Kali Linux won't boot to GUI

I have Kali Linux V 2.0 installed for week. Out of nowhere I can't start it. I just get into safe mode login page and can't do anything from this point- can't type, move the mouse, nothing. Any ...
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0answers
21 views

OpenSSH 5.3 - Change encryption algorithm for private key file

Using ssh-keygen, I need to generate a SSH private key file where the encryption algorithm used when using a passphrase is AES-128 with CBC mode. I know this is the default for OpenSSH >= 5.4 as per ...
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0answers
9 views

F2FS issue - unsuccessful remove, lost access to files

While removing unnecessary files I bumped into an error. with fsck.f2fs /dev/sda4 -t I can see | | |-- Die Ärzte - Manchmal haben Frauen <ino = 0xc11874>, <encrypted (0)> | | ...
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0answers
7 views

GRUB2 load other Truecrypt disk with rescue disk

I am trying to automaticly load my Windows encrypted partition with a keyfile from my GRUB2 but my Windows is on another disk. My layout at the moment looks like this NAME MAJ:MIN RM ...
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0answers
19 views

How much can user actions be limited?

I need to use a server (Linux, Ubuntu) 'S' as a bridge between clients and other local servers 'LSs' which offer a series of services such as DB access via web or applications that must run on them ...
1
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1answer
35 views

Why doesn't Linux detect my windows OS?

I wanted to install Linux Mint alongside Windows 10 (with Windows 10 already installed); but the moment I was going through installation process, I got stuck at the command that I have to erase my ...
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1answer
14 views

Concatenate four binary files using alternating pattern in Linux

I need to concatenate four binary, meaning non-text files. Lets say I have four files: file1: AAAA file2: BBBB file3: CCCC file4: DDDD Now I want my resulting file to look like: ABCDABCDABCDABCD. ...
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0answers
11 views

Metasploit Android payload [on hold]

I am running Kali linux on virtual box My virtual box network setting are adapter1-->NAT and adapter2-->Host only ifconfig--->ip address--->192.168.56.101 I'm trying msfvenom... android payload of ...
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0answers
28 views

What does the “:.” in output mean when running “ls -R” in Linux?

ls -R is used for recursively listing out the files, directories and sub-directories. In the output I see a :. symbol when the ls -R is executed. Can someone please help me understand what that ...
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1answer
25 views

Problems with local networking on Kali Linux

I installed Kali Linux on VirtualBox recently. I do not have an external adapter; only my internal adapter. The problem is when I set “VirtualBox -> Settings -> Network ->Adapter1 -> NAT” I can ...
2
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1answer
50 views

System error after Kali Linux dist-upgrade

I was doing a distribution upgrade on Kali from 1. 1. 0 to 2. 0 using: sudo apt-get dist-upgrade Upgrade was of 2 GB and after downloading 1 GB, and I wanted to download openssh-server so I did an ...
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2answers
35 views

How to make a partition in Windows for a Linux distribution?

I've tried to find out how to do this without success. I want to make a partition that will be available for a Linux distribution to use when I install it, so I can set up a dual boot. I have a ...
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0answers
64 views

Mounting HFS+ partition on Arch Linux

I'm having some problems with mounting an hfs+ partition on Arch Linux. When I run sudo mount -t hfsplus /dev/sda2 /mnt/mac I get this error: mount: wrong fs type, bad option, bad superblock on ...
2
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1answer
18 views

Install packages onto USB

I have a Raspberry Pi 2 with Kali Linux. The SD card is only 8 GB, and the image for Kali for the Pi does not come with many packages. I do not have much space left on the SD card, so I would like to ...
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0answers
12 views

Wireless card in virtualbox

I am currently trying to get a wireless card to work in kali linux(on a virtual box), as I need it to run airodump-ng. I have a wireless card built in to my laptop, but with some research I found ...
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0answers
21 views

How do you update a DNS server through an SSH tunnel?

I have a Linux machine which is set up to use dynamic DNS. My organization blocks access to the DNS server, preventing me from updating the IP address. I was wondering if I could make an SSH tunnel to ...
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0answers
41 views

Encrypt hard disks with VeraCrypt in a mixed Windows / Linux system

My system is a dual boot Ubuntu / Windows PC. I installed several hard disks: Two SSDs (one for Windows 7 Pro, one for Kubuntu 15.04) and some conventional disks for data. Currently the Linux disk ...
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0answers
19 views

How to create hybrid live USB

I have a laptop running stock UEFI and Windows 8.1. I want to create a bootable live linux USB stick that can be used to boot either my older BIOS system or my newer UEFI system. I am ok with having ...
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0answers
15 views

Open SD card on Linux laptop [on hold]

I am trying to open my SD card on Linux. It is my first time that I use Linux . please could you tell me how to open it?
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3answers
38 views

How do i change my display name in Linux without adminstrator privileges?

I recently got an account in a network, and the administrator misspelled my name. Is there a way to change it on my own?
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1answer
70 views

Out of physical memory on notebook - Correct approach?

I have a Fedora 21 on my notebook and it sometimes runs out of memory. The notebook has 4GB of system RAM and the OS takes up only about 450MB of disk space. I am sure that the culprit is Chromium; ...
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1answer
11 views

Install package not in repositories so that dpkg knows about it

I am trying to compile some software for my raspberry. During the configuration process, the following appears: configure: error: Requested 'libavcodec >= 55.0.0' but version of libavcodec is ...
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0answers
9 views

Switch between Qt4 and Qt5 with environment variables

On Ubuntu 15.04 I can switch between Qt4 and Qt5 by installing qt4-default or qt5-default but how can I do so without installing packages? I tried (source: ...
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0answers
18 views

start systemd-nspawn/systemd container on boot

I've been working with systemd-nspawn and have a couple of containers that I'd like to automatically start at system start. I'm using arch linux and according to the archwiki entry, the following ...
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1answer
17 views

How do I run an application only as long as my home-folder is decrypted?

I've recently started using syncthing, and I've run into a challenge: I have my home folder encrypted on my laptop, and I want to sync folders from inside my home-folder. The folder is encrypted ...
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0answers
19 views

How to check /var disk space usage by SNMP OID?

How can I check available space on a specific partition like /var using SNMP? the OID .1.3.6.1.4.1.2021.9.1.7.1 refers to available space on the disk. How can get partition's free space?
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0answers
13 views

Freeze During New Linux Mint Installation

I just tried to install the latest edition of Linux Mint, but was unable to because the install froze midway. I tried again in compatibility mode, but it just froze again. There was a wall of text ...
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1answer
36 views

Crontab scheduled backup not running

I need to have the ZIP compression happen on a different drive than the server due to limited space. Here is the command is the line I use in crontab: 00 1 * * * osmc cd ...
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0answers
10 views

Can there be multiple persistent scsi names for the same device?

I'm working on a product that runs on a CentOS 6 VM running on ESX 6. As part of the installation, we attach hard drives a pass-through RDMs to the VM and then make partitions on the drive using GPT. ...
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0answers
5 views

Remote Unison will not write Archive file

I've used Unison (2.48) to sync my workstation with multiple compute clusters in a star topology quite successfully. However, one cluster in particular has a consistent and reproducible problem that I ...
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0answers
13 views

File permissions using nfs-mounted vfat disk

I'm trying to get full access to a disk on a home server. On the server a raspberry pi with debian, there's only one user, "pi", with root privileges. On the client, an ubuntu machine, I have two ...
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0answers
13 views

Is there a Linux `setfacl --test` equivalent for BSD?

The Linux version of setfacl, as opposed to the BSD version has that very handy --test option: --test Test mode. Instead of changing the ACLs of any files, the resulting ACLs are ...
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0answers
22 views

Unrecognized 2TB 2,5" HDD and floppy: error -5 while reading block 0 errors in Linux under VM Ware

I’ve recently bought a 2TB 2.5" external hard drive (Seagate Expansion Portable STBX2000401). I have a problem with this drive, Linux doesn’t recognize it (I am using VM Ware on Mac OS X). When I ...
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0answers
20 views

How do I figure out a root cause of a zombie process?

A process on a production linux server became a zombie with unknown reason. I wonder if there is a certain methodology to find out what causes it.
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0answers
15 views

installed the wrong version of JAVA and need to remove and install correct one

I accidentally installed OpenJDK on Red Hat Enterprise Linux 5 instead of Oracle Java Development Kit on Red Hat Enterprise Linux 5. When I try to yum install Oracle Java Development Kit on Red Hat ...
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1answer
10 views

Why do a certain directory content's permissions change when shutting down computer?

I'm using the sudo chmod -R 775 /dev command via the terminal for development purposes, but, every time my computer shuts down, all of the directory's contents revert to how they were before the ...
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0answers
17 views

Can I track the CPU load that IPTABLES firewall is causing?

Since IPTABLES is a software based firewall, I am wondering if it is possible to log the exact load it is causing, cpu cycles, etc. On a small system I am sure it is trivial. But how about with ...
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0answers
8 views

Need to connect and automatically transfer data from Windows 7 PC to Linux Red Hat using SSH

OpenSSH is not suitable for Win 7 in my system.I would like to automatically bridge from Win 7 pc to Red Hat Enterprise server.
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0answers
20 views

How can I install Windows on my laptop after an error while installing Linux Mint?

I made a bootable pendrive of Linux Mint by PowerISO. When I was installing the distro there was an error. So I decided to install Windows 8.1 on my PC—an HP AC026TX laptop—but in Windows setup wizard ...