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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Why can't I start a VNC session using the randr flag?

I'm using Ubuntu 12.04 (I think it's desktop...) and can successfully run vncserver (which ultimately links to /usr/bin/vnc4server) and connect with my client, and I can also add the -geometry flag ...
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26 views

Clarification about logging

For some time, I've been confused about computer message logging. As the article on Wikipedia said, Syslog is a standard for computer message logging. So are there any other standars beside syslog? ...
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1answer
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How do I scroll the output of less command without a mouse?

I am playing with OWASP-BWA in a VM to learn security in web-apps. If you are familiar with it you'll know that the linux doesn't have any GUI. I haven't installed VMWare tools on the machine because ...
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13 views

Route all packets on port 80 from inside a vm to kali linux on another vm

I'm trying to route all packets on port 80 to kali linux so that I can ssl strip them but I cannot see to setup the iptables correctly to force all the packets to go to my other Vm. [ Virtual Machine ...
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1answer
20 views

What's happening when you do 'cd //'? [duplicate]

This is just trivia really, but it's just got me wondering what's going on. I accidentally hit / instead of . today and got this: [andrew.morris@server ~]$ cd // [andrew.morris@server //]$ pwd / I ...
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How do I silence part of an audio file using sox?

I have recordings that should have sections of 30 seconds (or so) excluded from the file. Currently, we just trim those sections out: sox -V1 file.wav -e signed-integer -r 8000 -c 2 -t wav temp.wav ...
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6 views

Centos Kickstart Multiline Cat

I have a serious of multiline cat commands in a kickstart file under the %Post section. For some reason all the lines get written to the same file. Example: %post --interpreter /bin/bash ...
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14 views

Linux: How to confirm bad ATA device?

dmesg listing this error string 14 times consecutively: [ 799.496637] ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 [ 799.496683] ata4.00: BMDMA stat 0x4 [ 799.496710] ata4.00: failed ...
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1answer
30 views

long ethernet cable only work with fixing 10baseT manually

I have a 25 meter Cat5e ethernet cable connected to a FritzBox and a router. If I'm using a short cable I will get an 100 and 1000 Mbps connection respectively. But with the 25 meter cable I will not ...
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1answer
9 views

Deleting unpacked tar.gz files after unpacking incorrectly

I recently unpacked a set of backup files in RHEL3 - 2.4kernel with tar via: tar -xvf backupfile It started to error out a bunch and I aborted thinking that maybe it was a gzip instead. Unpacking ...
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2answers
31 views

Documents are marked as Executable

I decided to add a GUI to my Debian installation, and was kinda impressed. One issue I'm having though after adding KDE and XFCE is that double-clicking on .RTF files brings up the dialog, asking if I ...
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1answer
15 views

Expose file from blocked directory to user on Linux?

I'm running a web server on my (virtual root) server where a friend is allowed to host his own page. This page is sitting in his home directory and the Apache is configured in such a way that a ...
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1answer
13 views

Package manager error, cant install new packages

When trying to install any package i get the following error, I am using linux mint sudo apt-get install gtk-recordmydesktop Reading package lists... Done Building dependency tree Reading ...
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3 views

Nginx, php-fpm, virtual hosts and premissions

I have apache-mpm-itk + php_module setup and user's folders/files belongs to them. But I want to migrate several accounts to nginx + php-fpm. What should be the right permissions on folders/files if ...
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2answers
16 views

Open a new tab/window in an existing Firefox instance on Linux

I would like to open a URL from the command line and have this open as a new tab or window in an already running and responding instance of Firefox. I'm using Debian's Sid branch. If I do the ...
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4 views

Investigating raw 802.11 frames (no monitor mode)

as part of troubleshooting a wireless connection mystery here, I am trying to capture all network activity only flowing from/to a specific client. I have full root access to the client, which runs ...
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5 views

Mirror / backup laptop btrfs drive to sometimes connected external USB disk

I have a laptop with an internal drive using btrfs. There are several subvolumes and snapshots on here. I want a copy of this drive to be made periodically to an external USB disk of approximately the ...
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6 views

Make GRUB changes permanent

At the GRUB command line prior to booting the kernel, I entered the following commands: trust /boot/boot.key set check_signatures=enforce Since I don't know how to boot my kernel from the command ...
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1answer
36 views

/dev/sda2 is full, anything suspicious here?

I ran out of room on a 20G partition I use for my OpenSuse linux OS. I ran du -sh * to see where the big hard drive pits swells reside, and this is what I see: 4.7M bin 47M boot 48K dev ...
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12 views

Set USB boot with GRUB without using BIOS setting

I need to mount USB with GRUB without using BIOS config (i dont have any password for edit bios config). I'd like just use my LinuxLive distro installed on my USB but BIOS setting are set for HD boot ...
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15 views

Unable to access SAMBA Share from Windows

Hi I've tried solutions from similar questions but none of seem to solve the issue. Here's a short and crisp description of the problem. Windows Client OS : Windows Server 2008 WORKGROUP : WORKGROUP ...
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1answer
10 views

Adding virtual interfaces (not VLAN) in linux

for some software testing, I need 12 different IP addresses to contact, each one with a unique MAC address. I just set up an Arch Linux VM but I can't figure out, how to configure virtual network ...
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Hard drive is not accessible

I have installed new internal hard drive on my desktop but when I click on partiton of the hard drive from another hard drive it is showing "Unable to mount location" in linux(from ubuntu and ...
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2answers
62 views

How to run command without “sudo”?

Nagios on my server isn't working properly. It can't execute command lftp without "sudo". Is there a way how to allow nagios run commands without using "sudo"? My /etc/group: ...
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Why in 64 bit machine not able to use whole free memory as disk cache. Facing sudden disk cache drop [migrated]

I know, process can use disk cache as free memory as required. In my 32 bit machine I can see, disk cache can use all free memory. But in 64 bit machine can't. In 64 bit machine, I have 252GB RAM(free ...
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1answer
9 views

Splitting a zoomed terminal in Terminator?

$ apt-cache show terminator Package: terminator Version: 0.97-4 A terminal window in terminator can be split horizontally or vertically, however if you zoom a terminal, it has to be restored before ...
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7 views

Terminator - how to split and decide where the new terminal goes

$ apt-cache show terminator Package: terminator Version: 0.97-4 When splitting the terminal horizontally, the new terminal, by default always comes at the bottom. Would it be possible to have this ...
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1answer
24 views

Accessing Linux NFS Shares using Windows Explorer

I have a Linux Machine (CentOS 6.4) using which I exported a NFS Share. I'm pretty sure that this is an NFS Share since I Created an entry in /etc/exports Ran the command exportfs -avr Now when ...
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8 views

How to convert .OBJ to .CGNS

Working with 3d geometry. I need to convert .OBJ file obtained from maya/3ds max to .CGNS (a really strange format described here). Is there an application that can do this (for windows or ubuntu?)
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22 views

My asus laptop shuts down unexpectedly when unplugged

My asus laptop shut down unexpectedly when unplugged ... even with battery charge over 50%. The OS installed is Linux, and it is set to shut-down at a critical percentage of 5%. It doesn't look ...
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12 views

Handling symbolic links in c include path

I'm compiling some software that uses the socket.h library. Make fails with this: In file included from /usr/include/sys/socket.h:38:0, from com/etsy/net/UnixDomainSocket.c:9: ...
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Run Python scripts without explicitly invoking `python`

I'm using Debian Linux. I was wondering if there was a way to configure to run all Python scripts in the terminal by typing script.py (instead of python script.py).
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How do I start an application after running the installation script?

I've been looking around the internet and I can't find a direct answer to this. I've install Komodo IDE by downloading the .tar.gz file (from http://komodoide.com/download/) and using the tar command ...
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1answer
44 views

Can't understand loops :( [on hold]

I'm trying to understand better the while and until loops, can someone help me with this example? #!/bin/bash # Listing the planets. for planet in Mercury Venus Earth Mars Jupiter Saturn Uranus ...
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1answer
29 views

SATA controller or disk failing?

Recently my laptop IO became deadly slow. I investigated a bit, and according to smartmon tools I have no errors on the disk, tough I'm getting a lot of errors in the syslog: ata2.00: exception Emask ...
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21 views

Make certain files read only on boot

I'm running Ubuntu 14.04.1 LTS and GRUB2. I'm wondering if there is a way that, upon booting the kernel, I can have the kernel make certain files read only. I want this status to persist for as long ...
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20 views

Rendering of unicode symbols in urxvt (height / width) vs. gnome-terminal

gnome-terminal renders the unicode symbols (arrows) in my prompt different from urxvt: They are displayed across the whole line's height, have less spacing in-between, but more appropriate ...
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5 views

Can I help R to resolve its own dependencies?

I'm installing bioconductor packages in R 3.1.1-1 on Debian Wheezy and keep getting installation errors involving dependencies like "XML" and "RCurl". A specific example: > biocLite("biomaRt") ... ...
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what is suid advanced permissions how does it work how to configure it

Anyone explain to me what is SUID and GUID how to configure it. and how does it work this advanced permissions can set by only executable files. for general files directories how to set SUID and ...
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7 views

rutorrent & /var/www permissions

Sometime ago I messed up my permissions to access rutorrent (however it is still running) I've tried to instate them back using various methods but I'm not getting any closer. This is what I get when ...
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23 views

How to boot from USB and copy files to USB?

My Windows 7 installation is broken. It won't boot and when I run the installation from bootable USB, it gets stuck right at the beginning saying "Loading something something (can't remember what)", ...
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2answers
30 views

How to make directory readable by TWO users in Linux?

How to make directory readable by TWO users in Linux? Should I create GROUP and add these users to this GROUP and make this GROUP being an owner of a directory? Should this GROUP be supplementary or ...
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0answers
7 views

fstab and cache- howto set for the best usage of SSD?

I have few questions regarding the fstab used for SSD optimalization. I found two versions of ho to set up some space for cache files tmpfs /home/user/.cache/spotify/Storage tmpfs size=10% ...
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1answer
8 views

manually suspend 3ware raid in linux

I am running a 3ware 9650SE RAID in Fedora. I would like to be able to manually suspend & wake (power off & on) the RAID only. The system does not reside on the RAID. How can I do this? I ...
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1answer
205 views

What is swap partition

I read that the swap partition must have the double size of your RAM, that is optional to install, that is for hibernation mode only, several technical information that tells me what to do. I am using ...
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1answer
5 views

After “grub>” mensage install Fedora 20

After installing the Fedora 20 sucessfully and rebooted, I have received the message on boot: Grub> I stay stuck on this screen and don't know what to do. I think it might be a problem to load ...
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12 views

removing group quotas (xfs)

I have been trying to remove a previously set group quota so I could then set-up a project quota but after reading the man page for xfs_quota /googling I still cant seem to get it right. I would ...
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1answer
15 views

Enable KMS after logging in

Is there some way to enable KMS after booting. My linux box is set up to log into a console, with X having to be started manually if required. I do not want to enable KMS on booting, as it causes ...
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How do I start Kali Linux properly?

I'm new to Linux and I've decided to begin with Kali Linux because I want to 1, get familiar with the distro, and 2, It is the perfect distro for digital forensics and ethical hacking, my possible ...
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18 views

Does wget download files more than once?

Suppose there is a website where Page A links to Page B and pages A and B both link to page C. Somthing like A -> B -> C | v C If I run recursive wget on A to begin downloading the pages ...