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

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Problems with the tomcat acess-logs

I need your help. I want to log the access on my Apache Tomcat webserver on SLES 12. He is running and he is logging normally. But when I visit the site, tomcat is writing 8 lines into the ...
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8 views

Synchronising Linux host to NTP Server

I'm trying to synchronize the time of Linux host with NTP server. The configuration file is modified with server information and the NTP service is started using the command service ntpd start By ...
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2answers
26 views

How can I make incremental backups of a running linux system using freeware?

I'm looking for an incremental backup tool to use on a plain old running disk based linux system, such as ubuntu or the like, and a tool which is freeware. This is for a plain old desktop linux, ...
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1answer
10 views

Configuring iptables to block all ports with three exceptions

I have been struggling with iptables in Linux to get the right configuration. Basically, I am trying to set rules that accomplish the following goals: Incoming traffic that is part of an established ...
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10 views

Extract From tape Brightstor/Arcserve Linux?

I have some SDLT II tapes that were made with brightstor a few years ago. I don't know anything about the tapes besides that fact of who made them. When I try to see how data was stored on the tapes: ...
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1answer
21 views

unix/linux chmod to let everyone read every directory and file

I'm having file permission trouble backing up my MacbookPro through my LAN to my Windows computer. I want to set permissions of all files and directories on MacbookPro to allow reading by all. On the ...
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1answer
11 views

Get part of string that matches regex

I'm writing a bash script and trying to parse a file to get a software version. The output is : Version 13.0.R7.0 - Built on Tue Feb 09 18:47:29 EST 2016 I want to be able to pull out 13.0 (I will ...
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5 views

Multi-boot Mac OSX on Windows/Linux machine?

End Goal: Be able to choose the operating system at startup between Windows, Linux, or Mac from 3 separate hard drives. Background: I am a student taking computer programming, with a focus on Web ...
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8 views

Chromium MIDI setup on Linux

I'm currently trying to work out how MIDI is supposed to work in Chromium on Linux. I'm on Gentoo. I've got Chromium 52.0.2743.60 installed. The midi access object obtained from navigator....
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13 views

ddrescue from drive intermittantly cutting out, ways to automate power cycling via software?

Have a failed Windows/NTFS drive. I was able to connect to another PC via USB-to-IDE cable and recover most of the drive with a Knoppix 7.2 LiveUSB and ddrescue/ddrutitliy. I've recovered most ...
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10 views

assign identical permission to owner and group

I want to assign a bunch of folders and files ( around 1000 files and folders ) the same permission to the group as they are for the owner. Is there an easy way to realise it? The normal method would ...
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2answers
29 views

Slow Connection to Server (100kb/s) on all Protocols (HTTP/SSH/FTP)

We have been experiencing an intermittent problem with our server (1gb port) which sporadically will only serve files at a maximum speed of 100kb/s via all protocols (HTTP/FTP/SSH). First we thought ...
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28 views

Burning Windows XP ISO To USB

I'm attempting to create a bootable ISO for Windows XP using Gparted and dd in order to install onto another computer. However, every time I've attempted to do so and have burnt the ISO to the disk ...
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21 views

What is the swap partition on linux mint? [on hold]

I'm installing linux mint and looking for the swap partition. All it has is: / /boot /home /tmp /usr /var /srv /opt /usr/local
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3 views

Where One-Tab Firefox Extension save data

I am trying find the (*.sqlite or *.json or *.db) file where one-tab firefox extension saves the urls, but I am not have success. Some of you know about this? Thanks. P.S.: I'm using Debian Jessie
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11 views

Boost input mic under Debian

I'm running Debian Jessie Lite (without X) on RPi3. I connected an external USB microphone and I set the volume to maximum using both alsamixer and pactl set-source-volume. Anyway the actual ...
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2answers
16 views

Uncompress using tar -xvzf results in a folder with less size than compressed file

I have a file called DW.tar.gz in a RHEL 6 which has a size 539MB. But when it is uncompressed using: tar xzvf DW.tar.gz the resultant folder only has 44KB. The linux shell doesn't display any error ...
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2answers
11 views

Running Mac OS on my Laptop [on hold]

I have HP Pavilion Sleekbook 14 PC . I want to run Mac OS on it . I am confuse what should I do to make my laptop capable for VMware to work on it . I have researched and worked a lot on it . Can ...
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1answer
15 views

curl shows a greater-than sign instead of uploading a given file to a given server

I want to upload a file to a WebDAV server within Linux command line. The standard recommendation for this is to use curl in the following way: curl -u mail_address:password -T filename.ext https://...
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7 views

Send email using mail hangs - Ubuntu 14.04

I have try to send email using ubuntu shell and when I execute the below, session is getting hanged. Kindly help me on this. echo "hello world" | mail -s "a subject" abc@gmail.com After some ...
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1answer
14 views

Does BIOS logs event such as power on/off?

I would like to know if someone opened my notebook. Note: I can't use Windows Event Viewer because someone can just insert a Live CD Linux to boot the PC bypassing windows. So does the BIOS save any ...
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2answers
13 views

Creating a bash script for logrotation with date in foldername

I have a folder structure in /var/log like this: . ├── customers │ ├── core00001 │ │ ├── 2016.07.21 │ │ │ ├── apache.log │ │ │ └── error.log │ │ └── 2016.07.22 │ │ ├── ...
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1answer
14 views

External disk not accessible

My WD Elements external disk connected via USB 3.0 cable is not accessible. I tried it with two versions of Windows and with Ubuntu 16.04 kernel 4.6.0. The disk was working some days ago. Then, ...
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1answer
14 views

Why does my Ubuntu IPv6 ssh server not work?

I am failing to set up my Ubuntu Server (16.04 LTS) with OpenSSH via IPv6. The server is running inside a VirtualBox Machine, which has its network interface set to "network bridge" (if that is the ...
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2answers
21 views

How to set up a surrogate user on Linux

I have a 'work' user and a 'leisure' user. How to I set it up so that one of those users has unfettered access to the other's home folder, so I don't need to constantly switch between the two or ...
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2answers
23 views

How should I partition the SSD and HDD drives for my dual-boot PC? [on hold]

I will have an 480 GB SSD and a 1 TB HDD. I want to make a dual-boot machine, where both operating systems benefit from the SSD's speed. I will install Win10 for gaming and will use Linux Mint for ...
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1answer
16 views

How to rsync files older than x min on linux

Here is what I have now: rsync --remove-source-files -vr user@server:/foo/bar/in/ /some/local/path Is there a way I can instruct rsync to only fetch files that are older than x min/hours from the ...
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7 views

Running mdadm raid 6 with bcache layer on top. The raid had 6 drives in it and then an ssd for bcache

Output of /proc/mdstat Personalities : [raid6] [raid5] [raid4] md0 : inactive sdd1[1] sde1[2] sdi1[5] sdb1[0] sdc1[6] sdh1[4] sdg1[3] 13673677416 blocks super 1.2 unused devices: This raid ...
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1answer
11 views

Repeating a command based upon user input

I'd like to write a command where I can ask the user which operation (i.e., addition, subtraction, multiplication) they would like performed and ask them how many numbers they would like me to do it ...
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1answer
17 views

How to browse bash history between certain line numbers

Everytime I need this I google it like 10 minutes. I don't know how to express this better so that Google finds it right away but I need to retrieve bash history between certain lines like: $ history ...
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2answers
38 views

Cloned old SSD to new, larger SSD - can't align partitions

I went from a 120GB SSD to a 480GB SSD, but because I dual-boot between Windows and Linux, I can't seem to get the new, unallocated space beside either of the partitions for an extension to happen. I ...
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1answer
23 views

Linux: Checking communication between three hosts

I would like to find a Linux command that I could write a bash to test the communication between three (or more servers). My need is showed in the scenario below: Source Gateway Dest Host A Host ...
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1answer
568 views

Multiple Installations and Understanding $PATH

I have an older version of Git installed at: /usr/bin/ I recently downloaded a newer version to: /usr/local/bin When I type: which git I get the location of the old version. I believe that ...
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1answer
12 views

Rescue data using udev

I have a device (Smartphone: BQ Aquaris E4.5 Ubuntu) which contains data, but I cannot reach it directly, i.e. mounting or opening a shell or alike. All I managed to do was to see it (in fastboot ...
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1answer
25 views

KDE system monitor vs GNOME system monitor

I have both the system monitors of KDE and GNOME. When I compare the CPU usage of a CPU intensive program, that of KDE reports a 30% usage and 3GB of memory while that of GNOME reports 300% of CPU and ...
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How to specify default Ubuntu 16.04 installation language in isolinux/lang?

I previously used this command to select english as the default language for my unattended Ubuntu installation in 14.04 and it worked perfectly: echo en >> isolinux/lang For Ubuntu 16.04 this ...
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2answers
32 views

Verifying linux mint iso image

I wanted to try linux mint on my computer so I downloaded the iso file from the official website https://www.linuxmint.com/edition.php?id=217 via torrent. The computer I used to download it runs ...
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15 views

How can I benchmark Internet connection uptime (to run for hours and log results)? [on hold]

I have reason to suspect that my Internet connection is unstable. How can I monitor (with logging) Internet uptime and length of outages? Is there a tool or built-in command that can provide ...
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1answer
34 views

Using bash, how to extract specific image's URL and title text from html file?

Given several hundred numerically ordered html files, each having multiple image tags but only one image with the id I'm looking for and following the convention <img title="$titleText" src="$...
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0answers
23 views

Ubuntu and web server permissions

I, I am going to ask a question that has already been posted many times but even though I have read many guides and posts, I still have doubts. I have a server with ubuntu 14.04 on which I have a ...
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0answers
29 views

Getting BAD Signature when verifying Linux Mint .iso image

I've been attempting to install Linux Mint 18 on a hard drive for a while now, but I continuously run into an error when I try to use gpg --verify. The exact error is as follows: $ sudo gpg --verify ...
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9 views

New Libre user needs assistance

I get the feeling this is going to be a little long winded so, please bare with me... I have a column which has hours in it, which are totalled at the bottom, for anything that has more than 2:29 ...
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1answer
29 views

Linux Laptop shutting down on battery level bellow 8%

I've written a crontab entry that runs a script in my home directory as user. That notifies me if I forgot to switch the power brick on. This works fine. BATTERY=$(upower -e | grep 'BAT') ...
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1answer
32 views

dd to drive that isn't there [duplicate]

I've been developing a make target that uses dd (actually dcfldd) to write a Raspbian Jessie image to an SD card. The target is just flash: sudo dcfldd bs=4M if=$(IMGPATH) of=$(SDX) sync ...
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dd always fails to write one partition on first try; succeeds on second

For a robotics project, I've assembled a make target that uses dd (actually dcfldd) to write a Raspbian Jessie image to SD card. This way, I can be assured that my environment is reproducible from ...
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Find Text File Data from Raspberry Pi SD Card

The SD card on my Raspberry Pi has become unusable. When the Raspberry Pi was running correctly, it was storing data to a text file. I'm able to read the contents on the SD card via the SD card reader ...
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4 views

pbs_server failed to start

I am following along with the torque installation guide and have a minor deviation: my installation is inside /apps/torque/6.0.1 where /apps is a symlink from /disk2/apps. I am trying to run ./torque....
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18 views

Merge pdfs based on first two words in file name

I have a folder containing a number of files with the following filename structure: John Doe - title.pdf John Doe - title2.pdf John Doe - title3.pdf Jane Smith - some title.pdf Jane Smith - second ...
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5 views

mkfs.xfs - how to calculate su & sw on RAID10

I have RAID 10, that is my configuration: /opt/MegaRAID/storcli/storcli64 /c0/d0 show Controller = 0 Status = Success Description = Show Diskgroup Succeeded TOPOLOGY : ======== ---------------...
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Using Keyboard Over UART In C.H.I.P

I have recently bought a C.H.I.P. and because it only has 1 USB port, I thought it would be nice if a USB Keyboard could be interfaced to C.H.I.P. through its UART port, with a USB - RS232 adapter. ...