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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Is it better to use the systemd service unit's Restart & RestartSec, or use a systemd timer unit?

I have a couple of in-house automated scripts running at periodic intervals. One is every five minutes, the other is every minute. They don't really need to be ran on-the-dot; e.g. I don't care if ...
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1answer
15 views

Arch Linux non-critical error on insertion of install disk

I'm trying to install Arch Linux i686 on a 2008 laptop. Upon starting up the machine and booting from the live disk, I get the following three errors: b43-phy0 ERROR: Firmware file "b43/ucode15.fw" ...
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12 views

Installing Graphics driver on Kali Linux

I am running Kali on a virtual machine and i want to change the screen resolution... I have download the graphics driver(HP ProBook 450) from the HP website and extracted the tar file. but now I am ...
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0answers
2 views

KDE Pause session restore until network

I recently re-installed Gentoo and KDE on SSD. Now it boots up faast. KDE does a session restore at boot, along with auto-starting any apps that I have setup. It turns out that I can boot to a ...
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12 views

I am unable to change permissions of files in my home directory(NIS)

I am unable to change permissions of files in my home directory. For example: Here /home/user1 is the home directory of the NIS user which is mounted from netapp filer. user1@localhost ~ $ pwd ...
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1answer
20 views

Using pv(1) to limit rsync speed

I'm trying to use pv rather than rsync's builtin --bwlimit to limit the bandwidth of an rsync transfer because --bwlimit is implemented in an eventually-consistent way, and my transfers are so short ...
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3answers
60 views

Linux: How to get current bandwidth usage from command line?

I'm looking for a good way to get the current total bandwidth usage on a linux machine, i've tried iftop, nethogs, but they doesn't show real bandwidth usage (compared to system monitor), anyway they ...
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1answer
18 views

I need guidance on creating a symbolic link for JDK

I am about to configure database schemas using Oracle Repository Creation Utility, but am hitting a snag. When I run ./rcu, terminal returns the following error: Exception in thread "main": ...
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7 views

InnoDB O_DIRECT on NTFS external drive

I have a MySQL database with a table that has about 170 mil rows. I have it partitioned into 32 partitions with hash(id div 10000000). I created and imported the rows and then moved the data to an ...
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1answer
44 views

Broadcom Wifi card (PCI-ID:14e4:43a0) not recognized on dual boot OSX/Kali

I have a dual boot Mac with OSX and Kali Linux(1.0.7). Today I tried to get the Wifi working according to this guide: http://samiux.blogspot.de/2014/02/howto-kali-linux-106-on-macbook-air-mid.html ...
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19 views

High-performance HTTP request sniffing in linux [on hold]

I have a VPN server that many users are connected to. I want to know which URLs are mostly accessed by the users. Therefore, I have to sniff HTTP requests that are transferred inside my VPN server. I ...
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0answers
9 views

Install Gentoo via compilation on virtualbox?

Note that I am not asking how to install Gentoo on a Virtualbox VM. My question is this: I have a slow machine ("Armpit"), and a fast machine ("Emperor"). Let's say I want to install Gentoo on ...
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1answer
37 views

Best solution for linux file sharing with FTP, Samba & Web interface [on hold]

I am looking for a file sharing solution for our network, these are the features I need: Samba access with login FTP access with login Web interface to be able to browse, download and upload files. ...
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1answer
32 views

Host is not able to ping Guest | Virtual Box

I am using LinuxMint17 (Host) and running another LinuxMint17 as Guest using Virtual Box. My Guest LinuxMint is able to ping Host LinuxMint but vice-versa is not happening. Network Setting in ...
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0answers
23 views

How can I speak with my acquaintance on Linux Cinnamon [on hold]

One of my acquaintances uses Linux Cinnamon and we would like to talk eachother by Skype, but we had to realised the Skype is not supported on Linux Cinnamon. We have searched any solution but we ...
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8answers
3k views

Swap partition size on a 64 GB RAM computer for memory-intensive work

I have 64 GB RAM and 240 GB SSD on my computer, which I'm going to use for memory-intensive calculations (machine learning, data mining, etc.). Most of the advice I found on the Internet are ...
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1answer
33 views

linux: monitor logfile for a string and execute script

I want to monitor a logfile (syslog) on my linux debian box. So if there is a new entry with a secific string, i want to execute a script. The strings are "alarm start" and "alarm end" So it should ...
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4answers
245 views

Linux Text editors able to work with very, very long lines & fixed length records [on hold]

I've got a fairly simple problem here: I have a piece of text which is one giant big line (~150,000 characters). No line breaks, and it's a fixed-length flat file (i.e. it was produced by a COBOL ...
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0answers
14 views

setting gvim as editor for crontab

I've see many post saying that by setting the following evnironment variable EDITOR=vim or VISUAL=vim will allow to use vim as code editor for crontab. I would likt to try to use gvim instead ...
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0answers
10 views

Synology NAS resume rsync backup after connection loss

I am trying to do a backup from a synology NAS to an offsite NAS. I am using rsync through DSM5 as of now, but it doesn't give me the possibility to resume the backup if a connection loss occurs. This ...
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0answers
14 views

Mount USB drive as a specific user under Linux

I'd like my linux box to mount a certain USB drive for a specific user rather than mount for the currently logged in user. For all other USB drives, I'd like to keep the default behaviour of the ...
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1answer
42 views

Linux remove password from rar files

I have some password protected .rar files. I have the password. I want to remove the password from my files. I mean I want .rar files with the same name without password. My Linux OS has unrar and ...
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1answer
25 views

Run a command on every file in a directory, changing the output name

I need to compile all of the C files in a directory into seperate outputs... see example gcc -Wall program1.c -o program1.out How do I do this?
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1answer
30 views

Customizing the Terminal

I am using Elementary OS (based on Ubuntu 12.04) and i would like to change the coloring scheme for Pantheon Terminal window. Here's what i have tried- Elementary Tweaks Dconf Editor shell ...
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16 views

Wifi not working Ubuntu

This problem was never there before. My wifi used to work fine. Suddenly, one day when I login, my mouse just disappears on login and my wifi has stopped working. Everything else was functioning fine ...
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1answer
21 views

Script not working when run automatically

This script (parts of it) runs perfectly when invoked manually from the Terminal: #!/bin/bash [[ "`ps -e | grep -c $(basename $0)`" -gt "2" ]] && echo -e "`basename $0`: Mutiple instances ...
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0answers
21 views

Tricky partition editing.. Windows, linux, 2 hard drives

Here's my computer's old setup: 500 GB SSD ~ 140 GB Windows partition (/dev/sdb4 after 3 partitions < 300MB) ~ 200 GB shared data partition (ntfs) ~ 125 GB Linux partition ~ 6 GB ...
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17 views

use dongle as wifi hotspot on linux

I am running Linux on a virtual machine on MAC OS. Currently, I have written a script to use Dongle to connect to a WiFi network and use web services. Now, I am looking to use my dongle as WiFi ...
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1answer
27 views

Where does Debian take the default umask from?

With a fresh ssh login: $ umask 0007 But: $ find . -maxdepth 1 -name '.*' -type f | xargs grep 007 | less $ # grep 007 /etc/profile # # grep -i umask /etc/login.defs # UMASK ...
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1answer
28 views

What should I do to make my Raspberry Pi safe for SSH?

OS: Raspbian I want to be able to access my Raspberry Pi from the internet. However, Raspbian comes shipped with a default username and password, which means anyone can access it. I have changed the ...
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0answers
8 views

Changing Memory Options for Vuze/Azureus in linux

How can I change the memory size used by the application Vuze/Azureus in linux? I have this, but I can't figure out the max I can set it to, and after I set it, the error(memory error) tells me that ...
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12 views

LinuxMint17 (XFCE) - PowerBroker Open losing ability to suspend, etc

I am running Linux Mint 17 XFCE and as with all my linux machines (all CentOS except this one for the wife) I have joined them to my server2k12 domain via PowerBroker Open. Prior to joining them to ...
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0answers
7 views

Installing arch without wiping home partition

I was wondering if there was a way to install ArchBang Linux and replace my current install of Fedora without losing my home partition and without running into any crazy erros or whatever with ...
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1answer
31 views

Need a way to use 2 networks to access the server in parallel sharing data traffic

I have a server connected to Internet via two networks - A microwave link and an ADSL Link. The server has been assigned static IP address in both network. Both both the networks are not reliable and ...
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0answers
7 views

Running Wine program through alternate network interface

Is there a way to configure Wine on Linux to use a different network interface on your system? I can't find anything about this except for other people's unanswered questions. The reason why I'd ...
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0answers
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How to create a shortcut to maximize horizonatally a window in KDE Plasma?

"Provided your window is not already maximized, clicking on the maximize button with the right mouse button will maximize it horizontally" How to create a shortcut for doing that?
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1answer
18 views

When formatting an SD card, can you set a custom allocation unit size?

I have an SD card that will only store files of 512, 1024, 2048 and 4096 KB in size. I wanted to set the allocation unit size to 512KB, but the maximum allowed in Windows is 64KB. Can I set this ...
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2answers
49 views

“no space left on device”, yet df shows plent of space and inodes

I've got two hard drives attached to this Ubuntu Server 14.04 system - one 1TB HDD, and one 2TB HDD. They are mounted in /mnt/1TB and /mnt/2TB. I would like to copy the contents of the 1TB drive to ...
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1answer
32 views

How can I chat (by mikrofon) on linux debian [on hold]

I would like to talking with other people on skype, but I can't because the other person uses linux debian. Unfortunatelly the skype isn't supported in debian, therefore we can't talk eachother. We ...
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1answer
27 views

Can't send email using mail on cmd line but can using telnet smtp commands

On a ubuntu system I have installed postfix and set relayhost and mynetworks in /etc/postfix/main.cf config file. I can now telnet to port 25 on this server and send an email by issuing the SMTP ...
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2answers
15 views

Piping Several commands in a BASH shell

I am trying to recursively loop through a directory which contains numerous other directories and files and then find all the .rb files and copy them to another directory. This is what I have so far ...
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1answer
21 views

mysql backup verification

Im not a dabase admin or advanced database user or advanced linux user.. but I would like to know how to verify mysql dumps because I am backing up my own sites manually. Normally when backing up lot ...
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1answer
22 views

Migrating files from Windows to Linux

I am converting my Windows 7 to an Arch Linux machine, and was wondering what the safest way to backup my files for use on Linux was. I don't want to use the Windows Backup and Restore facility as ...
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0answers
5 views

BenQ GW2265 connected via HDMI periodically blanks out for a couple of seconds

I have a BenQ GW2265 monitor connected via a HDMI cable to a Geforce 210 video card. From time to time, the display goes blank for 2-3 seconds and then comes back. As far as I can tell, the power led ...
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1answer
27 views

How to share a printer from Linux without a server side driver?

I'm trying to share a Canon printer from Raspberry PI running Raspbian. Unfortunately, the precompiled drivers provided by Canon don't work with the RPi's armhf architecture, and compiling the source ...
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8 views

User based NFS access

I have an NFS server called nfs-server and several nfs clients (nfs-client1,nfs-client2,nfs-client3). I'm trying to share the home directory of myuser1 to be available on all nfs clients, but with ...
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0answers
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Linux disk quota management tool [on hold]

I'm looking for a tool that will allow me to: Set disk quotas per directory Does not require me to work with any specific filesystem Does not require any changes to partitions Any ideas?
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0answers
17 views

mdraid 512/4096 sector confusion

I created a new mdraid array on 3TB disks, connected via USB (because the internal SATA ports were used for the old array). $ fdisk -l /dev/sdb Note: sector size is 4096 (not 512) Disk /dev/sdb: ...
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1answer
34 views

In linux how can I create a folder from a file?

I ran the following command to find all epubs and move them to a directory: find . -iname "*.epub" -exec mv {} /data/EPUB \; That created a super file with all the epubs concatenated together. Is ...
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0answers
15 views

How to troubleshoot Bluetooth connectivity issues outside of Windows?

I am running Windows 8.1 on Asus X79-Delxue motherboard. I have installed all the latest drivers as of today. I have never been able to use Bluetooth on the computer. It can't find devices and devices ...