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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Ubuntu - OK to raid0 and raid1 on same two drives?

I'm building a household Ubuntu 14.04 server for files and media. It currently has a 150GB drive dedicated to OS & software and I just installed two 3TB drives for the files and media. I'm ...
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Clonezilla vs external blu-ray

I am running clonezilla vivid (stable), which is built on Ubuntu 15.0 (kernel 3.19.0-18-generic)... I see this when I boot the clonezilla iso and run a manual linux shell... user@vivid:~$ cat ...
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1answer
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? wildcard produces unexpected result in LS directory search

I'm trying to get the hang of the CLI (command line interface). At the overall root directory, I did the following: root@droplet:/# ls ?tc I expected to get just the etc folder in the result list. ...
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1answer
23 views

which operating system to install on raspberry pi 2?

I have just got a new Raspberry pi 2 model B. I am just a little confused which operating system i should install on it? The two options I have are Windows 10 IOT or UNBUNTU Mate? I mean which OS ...
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3answers
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What is the equivalent of Ubuntu /etc/network/if-pre-up.d/ in Fedora (22)

I'm trying to migrate from Ubuntu to Fedora(22) but I can't find how to run a network script before the interface is up. Is there any equivalent of this /etc/network/if-pre-up.d/ in Fedora? I need to ...
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7 views

How to set proxy server Squid on CentOS multiple connections for download

I am now using Cent-OS and i have installed squid proxy server completely. The problem i meet is when I use Internet download manager and set proxy) to download a file, Internet download manager could ...
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1answer
24 views

Linux sh script throws “#!/bin/sh: not found”

i have a script #!/bin/sh # Automatically remove a torrent and delete its data after a specified period of # time (in seconds). TARGET=/var/www/transmission/completed USER=name PASS=pass ...
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1answer
31 views

How to dual boot Windows 10 and (Kali) Linux?

I tried to install (Kali) Linux over a live usb stick (live .. > Application > System Tools > Install Kali Linux), but the with Windows 10 created partition of ~60GB won't be recognized by the ...
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4 views

Fedora L2TP IPSEC VPN failure

I'm trying to connect to an L2TP IPSEC VPN server on Fedora 22. Connections have been successful Windows, Mac OS X, iOS and Android. I cannot get it to work on Fedora 22. I've followed ...
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1answer
9 views

Restart a command after it gets killed by the system

I have been using Gmvault to backup my Gmail email accounts but since the machine I use for doing this job only has 1GB memory, it frequently got killed by the system (Ubuntu) when it exhausted all ...
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1answer
11 views

Does qemu/KVM allow sound through Spice?

I'm setting up a Windows 7 virtual machine to try and eliminate my physical partition. I have it installed and working with Spice and the drivers from the fedora site: ...
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13 views

How come monitoring the status of a write to USB isn't reliable?

I write ISO files to USB thumb drives a lot, and I'm trying to find a way to monitor the status of a write. Googling this, I have found a bunch of solutions, including pv, dcfldd and the USR1 signal ...
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1answer
16 views

No access in the bash script

I am new to the bash script. I want to carry out the simulation using bash and I want to make it open the fortran program file. While I am writing this: #!/bin/bash echo ...
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1answer
26 views

Strange TCP Connections - How to kill

My parents Mac is having some random issues - my mum paid £160 to get the computer repaired as there were some "trojans" according to the guy on the phone from india On hearing this news I had a ...
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0answers
20 views

How to recover the original file content after using Script command on the file in Linux

I have a file named file1.txt in Linux.  By mistake, I used the script command, script file1.txt its goal is to add all the terminal output to the file1.txt.  Now file1.txt is with unreadable ...
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0answers
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File permissions and NFS (how to replace samba?)

I'm trying to replace Samba with NFS, but I need the equivalent of create mask, directory mask, force create mode, force directory mode, force user and force group options. I read this: Forcing group ...
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0answers
8 views

How to disable Gecko package popup for Wine?

When I run my app under Wine: wine my_app.exe I've got this annoying popup: which says: Wine could not find a Gecko package which is needed for applications embedding HTML to work correctly. ...
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Installing bootloader on a mac

Due to a somewhat odd requirement for a particular linux installation, with a particular software suite, I found it best to use ddrescue to populate the harddrive with the partitions and their data. ...
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12 views

How to get stdout of a “lost” session

I don't well what's the name of the situation, I think yesterday I closed a session with a background ipython process, but I am still able to connect to it (the process is running a web server and I ...
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2answers
12 views

How do I find out how long a command has been running for using time command?

I have a long mysqldump thats been running for over 2 days now (many 100s of GBs of data being archived). I started the command with time so that I could see how long it took when it finished. Is ...
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1answer
16 views

3 interface server - wap with bridge - how to route this?

I have the following setup (except the "server-addressed packets"-part): http://www.directupload.net/file/d/4062/jo9qswvv_png.htm Basically eth0, eth1 and a wap. eth1 and wap are bridged with br0. ...
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2answers
17 views

Auto Sync Linux clock

How to implement the automatic synchronization of clock (date and time) in Linux? What is the best mechanism? Googling, I've found this: ...
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0answers
7 views

add folder to path or copy symbolic links to existent directory in path?

I am running some script on a server, making use of environment modules: basically, when I load a module for some software, it prepends the path with the folder of the software. I am loading a lot ...
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0answers
18 views

Give CPU priority to certain process

I'm setting up a scheduled backup for my server. Sometimes it takes too much CPU and slows down other processes. Due to certain constraints I cannot change the schedule, and I'm wondering how can I ...
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1answer
10 views

Should I trust htop or top when it comes to RES memory?

I am writing a program to test some memory usage metrics on our systems and I want to hit a target memory consumption. You execute my program via meminflate.exe -G 103.1 if you want to take up 103.1 ...
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6 views

Minimal window manager for industrial control application with OpenGL + transparency

My company am currently working on a large graphical Linux PC based application for use on factory floors, controlling a specific machine tool. During development we test it on a full-blown desktop ...
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1answer
24 views

Linux: get the current boot disk's device name

When booting a machine by USB stick, sudo fdisk -l outputs you two devices marked with an asterisk, and you'll never know which was the boot device. I need a list of all disks attached to the ...
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0answers
8 views

Unable to launch matlab after installation

I have recently installed a copy of Matlab on my Linux Mint distro to a secondary hard drive. I have tried running it in different ways and none of them seems to work. I have tried using sudo, and ...
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1answer
24 views

How the internal pipes in linux work?

When I do ps , ps will show that in the list. But when I do ps | grep hello even though ps is the process , grep is the process shown. Is it that pipes work that way ? How is the pipe read fd closed ...
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9 views

Linux - How to stop a queued command

I have two terminals open: #1 dd command copying 128GB #2 Using Kill command to monitor dd process . I was repeating the monitoring command and accidentally repeated dd command in the second ...
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0answers
14 views

Shell script to get 2 diff files from 2 diff folders

Fetch all files from 2 different folders, If first file is from folder 1 and another file should be again first file from folder 2 at the same time, Similarly If Second file is from folder 1 and ...
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0answers
15 views

Can't mount Windows CIFS share on Ubuntu Server

I'm wanting to mount a network share running on my Windows Server 2012R2 server to a virtual Ubuntu Server 14.04 installation but am having zero luck. To elaborate on the setup, the Windows server ...
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Can't connect using ssh keys to dropbear

I have two pair of (same) embedded device that runs linux. I have setup the same ssh key on both. I can connect to one using that key but the 2nd machine still ask for password. Obviously I am doing ...
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1answer
12 views

Group of a user when running a setuid executable

If a user, user1 belongs to group1 and also a setuid executable exists that is owned by user1 and group, group2. user1 is not a member of group2. I am seeing that the executable cannot access files ...
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17 views

Intermittent boot failures - Linux Mint 17.2 (Cinnamon 64 bit)

About every 1/5 boots, my system, a Lenovo PC running Linux Mint 17.2 as the sole OS, will fail to boot. When this occurs, I have to power down and power up several times to get it to boot again. ...
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1answer
12 views

Unprocessed orphan inode list in VirtualBox VM

Recently while using my VirtualBox VM, the system crashed. Afterwords, the VM would no longer boot (I am using Vagrant). In my troubleshooting, I turned on the VirtualBox GUI and found that the ...
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Move partitions from pen drive to unallocated space in hard drive

I have built and installed Chromium OS on a pen drive following the instructions on this page. I can boot into the pen drive and use Chromium OS as if it were installed on my computer, I'm able to ...
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0answers
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RT5572 can authenticate using WPA2, but can't get an IP address from DHCP

I have a system running open embedded Linux with the Ralink RT5572 wireless usb card. I have the driver installed along with wpa_supplicant and I need to be able to connect to a WPA2 secured network. ...
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0answers
25 views

Cannot access server via SSH in terminal

When I try logging in via ssh root@server.org I am asked for my password, however when I enter it, it doesn't work. I can access the server by a different user then run su root and the password works ...
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1answer
13 views

How to configure a cron.d crontab file for root

What's the procedure for installing a cron.d crontab file to be run as root? I have a script I want root to run every 10 minutes, so I installed the file /etc/cron.d/mycron: SHELL=/bin/bash ...
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2answers
32 views

date. hwclock keep showing wrongly everytime after reboot

Edited question to better reflect situation. (My hwclock and date is not showing correctly) I am on +GMT 8 and i have set my hwclock to localtimezone by doing the following rm /etc/adjtime ...
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3answers
44 views

What's the fatest way to calculate in command line?

Is there a faster way to calculate in command line the following: echo "4 * 5" | bc
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1answer
8 views

To open lrzip-compressed in Debian 8.1

I downloaded the SageMath jessie package here but I cannot open it. I get the warning in ArchiveManager Could not open this file type There is no command installed for Tar archive (lrzip-compressed) ...
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0answers
13 views

How to recover Windows partition in dual boot?

I've installed fedora 21 in my computer, i've made the partitons correctly, appears the boot menu and starts correctly in fedora, but when i try to boot in windows appears this error: Windows Boot ...
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0answers
22 views

Cannot remove file from Linux filesystem

I have this file and I cannot get it removed from the filesystem: [root@ad Windows10]# ls -las total 16 8 drwxrwx---+ 2 root root 4096 Jul 30 10:19 . 8 drwxrwx---+ 12 3000024 users 4096 Jul 30 ...
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2answers
18 views

Unable to mount SD card

I'm not sure this is a right forum to post this question. However, I have this SD card I'm trying to mount on my linux machine. It always gives me mount /dev/sdb mount/ mount: no medium found on ...
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7 views

proftpd ignores HideGroup [on hold]

I have an interesting problem when hosting a proftpd on a SL6 x86_64. When I compile from source, proftpd executable ignores the HideGroup feature. However, when I install an older version from epel ...
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To recover Calibre library from backup?

Assume your OSX's SSD broke but you have backup in Time-machine and your spare computer is now only Linux, for instance Debian 8.1. I opened a thread about the issue also to Calibre's forum here. How ...
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Certain ubuntu 14.04 images accept ssh on parallella board

The Parallella is a microcomputer that's basically a number accelerator. Although it seems like it may be a network error, but I know for a fact its a hardware issue. I had a working headless image ...
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After formating a pen drive, the drive appears full of undeleatble garbage files

I'm trying to format a pendrive, under linux (Debian). I insert the pendrive and do not mount it. I log in as root and write: mkfs.vfat /dev/sdb This gets me the error: mkfs.vfat: Device ...