Go to advanced search

by Dutch_Master
Sat Nov 19, 2016 10:23 pm
Forum: Beginners
Topic: RSYNC with DAY and MONTH in destination folder
Replies: 15
Views: 1570

Re: RSYNC with DAY and MONTH in destination folder

I made another small script, entered exactly as above echo "today is" 'date' and received the following: Today is date Because you used single quotes, not back-ticks. @rpdom: I wasn't aware that back-ticks are now depreciated. They still work on mine. bash --version GNU bash, version 4.3.42(1)-rele...
by Dutch_Master
Sat Nov 19, 2016 9:21 pm
Forum: Beginners
Topic: RSYNC with DAY and MONTH in destination folder
Replies: 15
Views: 1570

Re: RSYNC with DAY and MONTH in destination folder

If you want the Bash shell to expand a command including another command, use back-ticks. These are usually on the same key as the tilde ~.

example:

Code: Select all

#! /bin/bash
#
echo "Today is" `date`
HTH!
by Dutch_Master
Mon Sep 05, 2016 12:57 am
Forum: Networking and servers
Topic: Server and cluster
Replies: 8
Views: 1186

Re: Server and cluster

Read up on this, then investigate further:

http://linuxpmi.org/trac/

(it's outdated, but the functionality is now in the kernel, IIRC)
by Dutch_Master
Sat Aug 06, 2016 2:26 pm
Forum: Advanced users
Topic: DIY Circuit Board Kit
Replies: 27
Views: 3923

Re: DIY Circuit Board Kit

Surprised no-one told you to google this: http://www.eurocircuits.com/making-a-pcb-pcb-manufacture-step-by-step Find more at: https://www.google.com/?gws_rd=ssl#q=pcb+making+howto HTH! PS: if you're new to electronics as you obviously are, forget SMD components for the time being. Stick to the throu...
by Dutch_Master
Mon May 16, 2016 6:52 pm
Forum: Off topic discussion
Topic: BP on where STEM education is going wrong
Replies: 66
Views: 8526

Re: BP on where STEM education is going wrong

Liz, music is under the "Art and design" label, after all, musicians are 'art-ists' ;)
by Dutch_Master
Fri May 13, 2016 8:13 pm
Forum: General discussion
Topic: A picture from The Pi Hut
Replies: 283
Views: 36717

Re: A picture from The Pi Hut

guru wrote:The workshop looks like an evil villain's HQ with people beavering away at stuff :-)
Wot, you guys took over the Redmond sweatshops? :o



hat, coat, I'll help myself out thank you! ;)
by Dutch_Master
Tue May 10, 2016 3:32 pm
Forum: Beginners
Topic: SD backup on the Pi during runtime: rpi-clone? alternatives?
Replies: 32
Views: 6342

Re: SD backup on the Pi during runtime: rpi-clone? alternati

You cannot back-up a running system :roll: If you want a backup of a working system, copy the contents of the SD card to a file on a separate PC. If you want to store important data from a running system, use rsync to copy the contents to another medium, like NAS, USB stick or said extra PC :)
by Dutch_Master
Tue May 10, 2016 3:28 pm
Forum: Troubleshooting
Topic: Sharing strange dhcpcd behaviour - any remedies?
Replies: 3
Views: 1012

Re: Sharing strange dhcpcd behaviour - any remedies?

Mind, mach in the above is actually the MAC address: https://en.wikipedia.org/wiki/MAC_address :P

:mrgreen:
by Dutch_Master
Thu Apr 28, 2016 3:17 pm
Forum: General discussion
Topic: Need High Accuracy Electronic Target using triangulation
Replies: 26
Views: 4208

Re: Need High Accuracy Electronic Target using triangulation

As you're well versed in micro-controllers, have a look at the Arduino Due . IMO this might just be what you need, as it's the fastest proc in the Arduino family (84MHz clock) and with 12 analogue inputs an increased accuracy by having more microphones is possible. Hook up a large TFT screen and you...
by Dutch_Master
Thu Apr 28, 2016 2:59 pm
Forum: General discussion
Topic: Code Obtain RSSI from raspberry3
Replies: 6
Views: 3779

Re: Code Obtain RSSI from raspberry3

You need to redirect the output of the program to a file, so it can be stored until you can process it. I'm not familiar with the tool but in general you should be able to do this (experiment a bit and study the various man pages!) bluetoothctl scan on > rssi.txt This redirects the output of the sca...
by Dutch_Master
Wed Apr 27, 2016 12:02 pm
Forum: General discussion
Topic: Electronic Crack
Replies: 4
Views: 664

Re: Electronic Crack

It's probably the healthiest addiction to have. Except for your wallet perhaps ;)
by Dutch_Master
Sun Apr 24, 2016 1:25 pm
Forum: Advanced users
Topic: insmod: ERROR: could not insert module modul.ko: Invalid mod
Replies: 2
Views: 1076

Re: insmod: ERROR: could not insert module modul.ko: Invalid

Kernel mismatch between the RPi and your work machine? Test bulding the program on the RPi itself, this way you can deduct if the error is related to the cross-compiling. It narrows down your search by 50%! :idea:
by Dutch_Master
Thu Apr 21, 2016 2:52 am
Forum: Beginners
Topic: customizing Rpi for sell
Replies: 7
Views: 1077

Re: customizing Rpi for sell

Install the build-essential package for a tool chain. IDE's aplenty, if you know where to look. Hint: Synaptics. Compiling stuff on the RPi is indeed frustratingly slow, investigate cross-compiling on the x86-64 platform (i.e. your desktop) One more thing: because you're making money from your produ...
by Dutch_Master
Mon Apr 18, 2016 8:16 pm
Forum: Off topic discussion
Topic: Things I never want to see on a Raspberry Pi
Replies: 50
Views: 5279

Re: Things I never want to see on a Raspberry Pi

The E96 range has 60 available :P In any case, the RPi BCM chip (whichever one it is) may run on 3V3, it's still powered from a 5V USB port. Use an open collector pin and it doesn't matter anymore which voltage the LED is connected to. Replacing the "power on" led with an RGB one would be a nice fea...
by Dutch_Master
Mon Apr 18, 2016 3:33 pm
Forum: Nederlands
Topic: 2 assige machine
Replies: 2
Views: 668

Re: 2 assige machine

Bericht gemist, dus wat later. Je kan een stappenmotor niet rechtstreeks aan een RPi aansluiten. Je hebt daar een zgn driver voor nodig. Daarvoor zijn 2 chips* het meest geschikt: de L298 en de LMD18200. Beide hebben voor- en nadelen: L298 : is al ruim 20 jaar oud, dus goedkoop te maken. Makkelijk e...
by Dutch_Master
Sun Apr 17, 2016 5:14 pm
Forum: Off topic discussion
Topic: Unix for the Raspberry Pi
Replies: 25
Views: 2975

Re: Unix for the Raspberry Pi

Heater wrote:[...] have you ever seen a Unicorn or a Unix?
Yes, they frequently advertise over here. See
https://en.wikipedia.org/wiki/Unox

Here's some too:
http://www.unox.com/

Oh, wait, Unix :P

:mrgreen:
by Dutch_Master
Sun Apr 17, 2016 2:09 am
Forum: Other languages
Topic: Regina-REXX and the COMPUTE.REX module for Dougie Lawson
Replies: 42
Views: 5378

Re: Regina-REXX and the COMPUTE.REX module for Dougie Lawson

... are hot dogs and beer a 'thing' at cricket matches? Shocking, utterly shocking my dear fellow! :o :shock: The noble Art of Cricket requires proper nutrition, hence it's tea and strawberry cake, occasionally someone slips in some raspberries somewhere, but that indulgence is allowed, in moderati...
by Dutch_Master
Thu Apr 14, 2016 12:14 am
Forum: Other languages
Topic: linux command chmod
Replies: 3
Views: 1045

Re: linux command chmod

Use the sudo command. Read up on it with

Code: Select all

man sudo
HTH!
by Dutch_Master
Mon Apr 04, 2016 8:23 pm
Forum: Networking and servers
Topic: FTP server with users
Replies: 18
Views: 1956

Re: FTP server with users

Given your level of inexperience, DO NOT attempt to put that FTP server on the internet! You'll be hacked in hours :roll:

First step: learn about Linux, networks and how to secure them. Google will find you suitable tutorials to study.
by Dutch_Master
Mon Apr 04, 2016 8:18 pm
Forum: Nederlands
Topic: muziek programmeren
Replies: 5
Views: 886

Re: muziek programmeren

Midi dus. Google geeft je daarvoor een heleboel aanknooppunten. Om te beginnen: http://www.tldp.org/HOWTO/MIDI-HOWTO-8.html http://www.linux-sound.org/ https://ccrma.stanford.edu/~craig/articles/linuxmidi/ Geen garanties op actualiteit, en alles in het Engels. Mocht je dat niet kennen, helpt Google ...
by Dutch_Master
Mon Apr 04, 2016 8:11 pm
Forum: Deutsch
Topic: Wasserpumpe Balkongewicht?
Replies: 1
Views: 791

Re: Wasserpumpe Balkongewicht?

Das ist einen Hoch- und Tiefbau Frage und gehörte eigentlich beim Erbauer und/oder Eigentümer des Gebäude. Es gibt bauliche Vorschriften für solche Fälle, die Gemeinde sollte da Auskunft bringen können.
by Dutch_Master
Mon Apr 04, 2016 8:01 pm
Forum: Networking and servers
Topic: FTP server with users
Replies: 18
Views: 1956

Re: FTP server with users

Set the file permissions for stuff owned by user1 to 744. This allows the owner to see/change and execute files and programs in that directory, but others (even if member of the same group) can only see it. If access is restricted only to group members, use 740 for file permissions*. Urgently consid...
by Dutch_Master
Mon Apr 04, 2016 7:50 pm
Forum: General discussion
Topic: ARRGGH Power cuts.
Replies: 28
Views: 4249

Re: ARRGGH Power cuts.

There's another alternative: use PXE. In other words, the OS is not on the SD card, but stored as image on a 3rd device. The RPi only needs some propitiatory files in RO mode on the SD card to boot. The PXE environment then loads via the network and runs in RAM. Said 3rd device can be a simple Penti...
by Dutch_Master
Wed Mar 30, 2016 10:28 pm
Forum: Troubleshooting
Topic: Network going down because of Raspberry
Replies: 6
Views: 672

Re: Network going down because of Raspberry

There's only one reason why this behaviour exposes itself, and that's that the RPi has the same IP address as the router, which I assume also has the DHCP server. Reconfigure the RPi so it gets another IP address from the router.
by Dutch_Master
Thu Mar 24, 2016 9:52 pm
Forum: Gentoo
Topic: Funtoo and RPi
Replies: 3
Views: 2321

Re: Funtoo and RPi

Many thanks for sharing that! I must admit I haven't pursued this myself yet, for lack of a use for the RPi.

Go to advanced search