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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Linux stuck on booting automatically in x seconds

I've recently found an old HP Mini of mine, and its hard drive was on its last legs. I decided to replace the HDD (Win 7) with an SD card running Ubuntu. The problem is, whenever I start the ...
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How can I prevent firefox from switching to search tab?

In firefox when you highlight Some Text and click right mouse button there is option Search google for "Some text". It is all nice, but firefox switches to the search tab immediately, how do I prevent ...
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How can I change a ChrUbuntu 12.04 install over to Arch ARM on a first generation Samsung Chromebook XE500C21?

I installed ChrUbuntu 12.04 on my Chromebook (Samsung XE500C21) using this script. Is there a way to swap my distro over to Arch ARM? Failing that, is there an easy way to install Arch ARM on the ...
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RTNETLINK answers: File exists Failed to bring up eth0

I have 3 identical servers which I SSH into, but couldn't on one of them after a restart. service networking restart just bring up "RTNETLINK answers: File exists Failed to bring up eth0" route just ...
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1answer
12 views

How to delete lost files in NTFS drive

I faced a problem like the one described here. Basically, after connecting my NTFS external hard drive to my TV, two folders were lost, appearing only as a 0KB file. I have been able to recover the ...
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1answer
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How can I erase a 250gb external usb drive with linux partedmagic boot cd

I run a dual boot of windows 7 and xp on Dell Optiplex 280 with a Pentium 4 mobo, a CPU of 3 Ghz and 2GB ram. My question is "How do I use the ERASER TOOL in Linux Partedmagic Boot Cd to completely ...
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How do extract filesystem from firmware dump of Sunell IP Camera

I have Sunell IP Camera and I need to extract file system from firmware dump. I try to use firmware-mod-kit: ./extract-firmware firmware.ntt The process completed successfully and I get result like ...
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1answer
9 views

restoring files after doing rsync with compression

I understand that you can rsync with arg -z and -a for compress and archive. Can someone tell me with these options, does it affect the files being backed up in any way if ever they need to be ...
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Linux Mint Cinderella 17 stuck on setting up host name dose not seem to move?

Installing Linux Mint Cindarella 17, It just seems to be stuck on setting up host name and just not doing anything else is this normal? Or have I done something wrong? Would greatly appreciate your ...
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Not registering on Asterisk over VPN

I want to work in local area from home, I configured OpenVPN on my Asterisk server (it is only one Linux server in LAN), it works fine. I enabled forwarding on Asterisk server, and client now can ...
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2answers
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Renaming multiple files to start with a capital letter

i'm trying to update my website to use CodeIgniter 3 but Starting with CodeIgniter 3.0, all class filenames (libraries, drivers, controllers and models) must be named in a Ucfirst-like manner or in ...
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install php-fpm on centos after remoe it

i install php-fpm and php-mysql and nginx then i remove it and update servers kernel. now, when i want to install php-fpm ,.. dont install $>uname -a 2.6.32-504.3.3.el6.x86_64 #1 SMP Wed Dec 17 ...
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7 views

Switch Server to use GCC version 4.8.1

I'm banging my head against a wall, I followed the instructions detailed here: http://superuser.com/a/677640 When I ran yum install devtoolset-2-gcc-4.8.1 devtoolset-2-gcc-c++-4.8.1 this was the ...
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Dual workspaces, One monitor

I'm currently using Linux Mint, and have a single 24 inch monitor. Does anyone know of an application that will allow two workspaces to be viewed \ used at the same time? I know of window managers ...
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Round-Robin Outbound Source IPv6 Iptables

I'm trying to do this: http://linuxbutler.com/tcpip-outbound-round-robin-load-balancing-iptables/ But with IPv6. It doesn't work, however. Seems nat doesn't exist in IPv6. Can you guys help me out ...
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6 views

Webcam problems on Centos 6.6

I've been unable to get a few different webcams working on CentOS 6.6. (Logitech C270 & Creative Live! Cam Sync HD) I think it's related udev but unsure. The following are my /var/log/Xorg.0.log ...
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Installing CUDA toolchain in linux without botching X

I've been trying for some time to install the CUDA toolchain on my linux (Fedora 20 x64, GeForce GT 540M) system. The main issue is that the drivers that curently allow X to run ...
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1answer
12 views

swap file vs partition

I needed some more swap for something I'm doing so I set up a swap file rather than editing partitions. Are there any disadvantages to using a swap file instead of a swap partition? My OS is ...
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1answer
15 views

Iptables rules suddenly not working

I'm trying to set up a webserver using an Odroid U3; as OS I have Debian 7.4. The issue came when trying to load the iptables rules with iptables-persistent. I'm using the same file with rules I've ...
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1answer
14 views

chmod throws missing operand on 764, OK on 664

Having set everything in my project to 777 (rwxrwxrwx) for debugging purposes, I wanted to dial down the openness and set the directories (not the files) in the root folder to 664 (rw-rw-r--). To do ...
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SSD seems to be read-only, nothing can be written to it (linux ext4 filesystem)

After two week of normal use my new SSD began to work strange. Now it seems that no file is written to it. An example: root@hooker3:~# mount |grep ssdhome /dev/sda3 on /ssdhome type ext4 ...
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Gnu screen, using the exec command in .screenrc

I have added the following lines to my .screenrc bind -c music u exec amixer sset Master,0 5+ >& /dev/null bind -c music d exec amixer sset Master,0 5- >& /dev/null bind -c music t exec ...
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In programs like Xterm, Xpdf, Nedit does refer to some Library?

These software have a menu different from other apps (in my gnome system) and they look like a light weight GUI. Can anyone please tell me what is the difference between this X and Gnome's ...
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10 views

Ansible: can't del user

I'm trying del user with the same name on all my servers. I'm using ansible all -m user -a "name=tim-g state=absent remove=yes" -s After this, system ask me the sudo password, but it's no work, I ...
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6 views

Netcat server execute program and return result

I am attempting to create a minimal local listen server that takes an input request, pipes the input to a program and then returns the result of the command. What I have at the moment is the program ...
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15 views

Iptables stops the network after a while

I have 3 dedicated servers (same hardware Supermicro X8STi and same bios) with CeontOS 7 Linux 64Bit and I'm having a problem with one of them, with iptables to be precise. When I change the policy ...
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1answer
19 views

Delete .avi videos by length using Linux terminal

How can I delete videos, via terminal, by length of the video? I have a cutoff point of 30 seconds, and I want to delete anything under that. If I select by size (find . -type f -size +27818098c) it ...
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1answer
4 views

Setting ACL for group read access

Let me introduce you to margaret and pepijn, my two LDAP users. Pepijn is at the bottom of my non-existent corporation's food chain and is therefore member of only one LDAP-group: pepijn@srv:/$ ...
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8 views

Linux cannot work with file “-c” [duplicate]

I have this file created accidently I guess but cannot handle it: -rw-r--r-- 1 root root 329 Dec 11 08:59 -c :~# cat "-c" cat: invalid option -- 'c' :~# cat '-c' cat: invalid option -- 'c' :~# ...
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6 views

Correct external HDD permissions

I have just reformatted a 2T external to use the EXT4 file-system with GPT partitioning from NTFS using ms-dos. Currently the permissions for this device are 755. I think this is correct, but I am ...
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18 views

How to match one or more non-slash characters

I am given a relative path that descends n levels deep and want to produce the "reverse" path that ascends the same number of levels. I want to produce the same number of levels with or without a ...
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1answer
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In a single terminal window capture the command to start a.out 3 times each running as background job

On linux terminal window is there a way i can start a program like ./a.out 3 times each running as background jobs. I was told that IO redirection is helpful.
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Serial device not detected by Lubuntu

Serial Wacom Tablet stylus and Serial Wacom Tablet eraser should appear in the xinput list in a Motion LE 1700 Tablet PC, however they are missing in Lubuntu 14 (32bit). Is there a way to make ...
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2answers
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Trying to run Konsole from XMing (Windows) fails

Connecting from XMing latest running on a Windows 7 laptop to an Ubuntu 14.04 server running KDE. I get the following error: cpatti@hab: ~ $ konsole ...
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Cannot boot onto any OS after deleting Linux partition on UEFI system

Today, I decided to delete Ubuntu 14.10 from my computer. Everything was OK, I had created the USB recovery drive of Windows 8.1. After formating the Linux, I restarted. Sadly, I forgot to delete the ...
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Harddrive spinning down though time increased with hdparm

I have an external harddrive connected via USB. The usual method to set the spindown / standby time of harddrives seems to be using hdparm. So I run sudo hdparm -S 200 /dev/sdb and get /dev/sdb: ...
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Fix program freeze with ram buffer

I'm using program with small bug. It's closed - source, so i cant change it code. It's very good for what its doing, and there is no apps like that one. So i can't use other programs. But that ...
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1answer
31 views

How to prevent installation of software with known vulnerabilities in Linux?

Is there any tool for Linux which scans software during installation for known vulnerabilities (weaknesses that could later be exploited)? In addition to scanning software after it is installed, I ...
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Owncloud in subdirectoy on arch + nginx + uwsgi

After several system updates of my Arch linux server, the owncloud web interface it is hosting stopped working. Unfortunately I noticed it only recently and I can't really go back to working system ...
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Trying to create two LVM groups using Preseed

Here's the trick of what I'm trying to do. I have VMs that I'm going to use to test a product feature. Testing that product feature requires that I configure the disks in different ways. My plan is to ...
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2answers
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Replace Referenced files with Symlink

I have a git repo I am working with that has files and folders that need to be symlink to files and folders inside another folder. All of the symlinks are refrenced as text in the second projects ...
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1answer
27 views

Environment variables on Linux-like systems

How to set environment variables for a user in most generic way that is independent of shell environment variables (like profile for Bourne-like shells, bahsrc, zshrc, zshenv, ..)? The idea is to set ...
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1answer
6 views

SuperMicro won't boot (won't POST) after trying to modify GRUB

I have a SuperMicro in this configuration. We installed Ubuntu 12.04 on it and I used it for over a year until finally upgrading to 14.04. I upgraded from CD choosing only default options, and the ...
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MWM hints inconsistently working / not working in i3

I've been searching for solutions to this problem on-and-off for about four months now, with no success. I think it's time I turn to StackExchange for input. I run a dualboot with Windows 8.1 and ...
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2answers
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Making backups of 10 hard drives. Should I just make disk images?

I am going to be making backups of about 10 hard drives, around 4 TB of data. I will be using a USB to SATA adapter and then be transferring the data to a 4tb external USB drive. I will most likely be ...
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How to burn multiple sets or groups of MP3s with multiple drives simultaneously

I have lots of MP3s that I need to burn into multiple audio CDs. I manually select 80 minutes or less of audio at a time, using multiple sessions of k3b with multiple CD-R drives to burn ...
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1answer
28 views

What are CPU time, user time, system time respectively?

I find someone asked a similar question, but my problem is NOT user-cpu-time, but user time vs system time vs cpu time. For example, the following info is what I got after a simulation on Linux: User ...
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1answer
31 views

Did I just send my private ssh key?

I was setting up ssh for git following this guide. I used the key before on another system successfully, expecting it to work now too I tested it with: ssh -v -T git@github.com And received the ...
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1answer
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How to run logrotate as a local user?

I'm trying to manage logs which are generated by local scripts. These logs are nothing but stdout and stderr redirected to local files. I don't have root access and trying to run logrotate as a ...
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1answer
21 views

Making a juniper VPN work on linux

I've tried several tools, the original scripts (ncsvc and ncui) do not output any error message to know what wrong with connection, even with wireshark I could not know what was wrong. The best tool I ...