| Tech entries - petermolnar.net
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| FreeBSD "kiosk" for home automation dashboard |
| My current, FreeBSD based server for self-hosting and home automation -
now with a touchscreen!
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| How to change DPI when docking with XFCE and systemd |
| DPI change on docking with XFCE and systemd on Manjaro |
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| The quest for simple, hight quality music and video playback in 2023 |
| The year 2023 reminded me of my mortality quite a bit, so I took a good,
deep look at my home setups in case someone else ever needs to be able
to understand it, use it, maintain it. I decided to start with something
that we use day to day - music and video playing.
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| I ended up with a Zigbee smart home because the alternative was hurting my ears |
| I’ve been eyeing with FIR (far infrared) heating for years, long before
we got to buy our current house. Now we have it, and while it’s
certainly not a cheap way to heat, it feels lovely; getting here,
however, had some unforeseen problems. |
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| Old Web, New Web, Indie Web |
| If you have to decide on the order of creative freedom vs data
ownership, what order do you choose?
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| Mi az az XMPP, miért jó, és hogyan használd? |
| Az azonnali üzenetküldők egyre gyalázatosabbak a felhasználói érdekek és
adatvédelem terén, pedig jó ideje lenne lehetőség szabadon választani
szolgáltatót, programot/felületet, de akár még futtathatnánk is saját
rendszert. |
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| DIY smart wake up lamp with IKEA, Sonoff D1 Dimmer, and Domoticz |
| I made a smart wake up lamp, just to see if it is better, than a normal
alarm clock. It is an insane difference, waking up is so much nicer, and
subtle, than before, so I recommend doing one. |
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| Budget-friendly webcam upgrade: smartphone with DroidcamX over USB |
| I found a program, called Droidcam, that can turn any Android phone into
a surprisingly nice webcam over USB, and it works remarkably well even
on linux. |
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| Run your artisan instant messaging service for your friends & family |
| Fleeing Whatapp due to their policy changes? Tired of the never ending
roam between the actual trendy instant messaging app? Here is a simple,
elegant solution: run your own server, onboard your friends and family,
and live happily ever after. |
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| Ultra low budget photo wall |
| I made a photo wall on an extremely tight budget, and it doesn’t look
horrible at all.
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| Excavating my former homepages |
| Someone, a long time ago came up with the thought that whatever is put
on the internet, it’ll be there forever. Well, it’s wrong. The old
versions of my own website, including their design, were long gone, so I
decided to put the Indiana Jones hat on, and started digging. |
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| Refactoring my static generator |
| Some years ago I decided to walk away from dynamic website in pursuit of
something that feels a bit more, like the small web, and what’s more
fault tolerant for the future. Unfortunately my solution overgrew its
promise so it was time for some reaping.
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| Rethinking, downsizing, and revisiting the idea of a home server |
| Lately I’ve found myself spending way too much time and effort on my
home server while not solving any of the issues I uncovered. It was time
to take a step back. |
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| Raspberry Pi 3 as featherweight headless media renderer |
| After years of experimentation with modern media center software I gave
up. As usual, the simpler, the better, and cleaner, so welcome back MPD
and VLC, and welcome raspotify. |
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| Consistent USB device naming in a FreeNAS jail |
| How to make an Aeotec Z-Wave Z-Stick, a CC2531 Zigbee2MQTT, and an
RFLink work with a FreeNAS jail running Domoticz |
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| Rebuilding my home server on a tight budget |
| For many years I used my former ThinkPads as home servers - built in
battery, 3G modem, dead silent, sort of too good to be true as a server.
Unfortunately my storage needs started to outgrow the options, plus my
RAID0 ZFS decided to die within 2 days of the first alert. |
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| Gopher? Gopher. |
| Since last weekend, I’m serving my site over gopher as well. Yes, that
nearly forgotten 90s protocol. And it’s not even an april fools joke. |
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| A journey to the underworld that is RDF |
| I got into an argument on Twitter - it made me realize I don’t know
enough about RDF to argue about it. Afterwards I tried out a lot of
different ways to drew my own conclusions on RDF(a), microdata, JSON-LD,
vocabularies, schema.org, etc. In short: this one does not spark joy. |
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| How to add themes to your website with manual and CSS prefers-color-scheme support |
| prefers-color-scheme is a new CSS media query feature, which propagates
your OS level color preference. While it’s very nice, it’s way too new
to rely solely on it, so a manual fallback is needed. |
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| Domoticz vs sensors |
| Summary of my experience of adding sensors, and switches to Domoticz
through MQTT, and RFLink. |
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| GPS tracking without a server |
| My pipeline of tracking where I’ve been using and Android phone,
Backitude, python, and cron |
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| Lessons of running a (semi) static, Indieweb-friendly site for 2 years |
| It’s not possible to run fully static sites with dynamic features, such
as webmention handling - you can get close to it, but you do need to
embrace external services.
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| Do websites want to force us to use Reader Mode? |
| The great unreadability of 2018 made Text secondary to Hyper in
Hypertext Markup Language. Do publishers really want us to keep reading
everything in the Reader Mode of the browsers? |
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| Using I²C sensors on a linux via a USB and IIO |
| A short story of getting a tiny, cheap USB I²C adapter for a home
server, learning about the Industrial I/O linux subsystem, and
connecting it to collectd. |
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| Guide on how to make your website printable with CSS |
| CSS snippets to consider when you want to provide a printable version of
your blog |
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| We are living in instant messenger hell |
| I had to install WhatsApp, because some friends are refusing to
communicate in any other way, which made me realise how tired and
disillusioned I am when I have to face yet another instant messenger
network - at least, with some work, Pidgin can still connect to more or
less everything and anything.
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| How to install microG an odexed stock android ROM |
| The method of replacing Google Services Framework with microG suite on
the stock, Android Marshmallow ROM of a Nomu S10 |
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| LinkedIn is ignoring user settings |
| Logged out users are prevented from reaching LinkedIn profiles set to
complete public visibility |
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| Living with a rugged, cheap Chinese Android phone, the Nomu S10 |
| Cheap, good outdoor phone, with gigantic, but irreplaceable battery,
waterproof body, very loud speaker. Has no repair options, starts to
fall apart after a year of use, and might come with a virus
preinstalled. |
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| Content, bloat, privacy, archives |
| I spent a lot of time trying centralising my online activities,
including adding bookmarks and imports from social networks. Lately my
site looked bloated and unmaintainable. I started questioning what data
is my data, what data should or could I own - it was time to rethink
some ideas. |
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| Headless Spotify Debian linux server fine tunes |
| Fine tunes and extras for Vivek Panyam’s guide “How to build a headless
Spotify Streaming box”
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| Self-hosted home SMS gateway |
| How to set up Gammu on an old ThinkPad with a 3G modem and listen for
MQTT messages to send them as text messages in case your internet is
down but you still need to alert.
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| Re-Decentralize |
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| Environmental sensor logging with Rasbperry Pi, Adafruit BME280 and SI1145, collectd, and mosquitto |
| How to collect, monitor, read, and store pressure, temperature,
humidity, visible, IR, and UV light data with a Raspberry Pi, an
Adafruit BME280, Adafruit SI1145, collectd stats collector, and
mosquitto MQTT. |
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| Bookmarks, favs, likes - backfilling years of gaps |
| What do you do when you have years of hoarded internet on your computer
and you want to put them into one place, to make it searchable? You put
them on your website, while retroactively like, favorite, and bookmark
them at their source.
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| A dirty fix for non-stop drifting Trackpoint |
| How to stop Trackpoint from constantly, slowly moving on it’s own under
linux
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| Logging Android sensor data with Automate |
| I’ve been searching for a long while for a sensor data logger app; it
turns out Automate can do this just fine with a lot of extra, so here’s
my solution for a Galaxy S4. |
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| ZFS NFS shares with avahi zeroconf |
| How to announce ZFS NFS shares on your home network for clients to
automatically discover them.
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| Fix the hard drive killer APM |
| How to spin down hard drive and get rid of the clicking noise in Debian
9 (Strecth) and Ubuntu 16.04 on a Thinkpad X250
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| Save files from Samsung Galaxy S4 with a dead screen with Debian or Ubuntu |
| How to download your files and safely destroy personal data from a
Samsung android phone with a dead screen using heimdall, TWRP, and adb.
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| Changing laptops: ThinkPad X200 vs X250, a story of a long postponed upgrade |
| Even though I only owned an X200 for 3 years, the laptop from 2009 was
becoming aged, no matter how many things I replaced on it, so sadly, it
was time to look for an alternative. |
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| Replacing Baïkal with Radicale |
| I was becoming unhappy with Baïkal, my contact and calendar sync server:
a growing number of clients was unable to use it, so I started to look
for alternatives. This time I wanted something plain text based.
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| How to get rid of 'FastCGI sent in stderr: Primary script unknown' in nginx logs |
| Add try_files $uri $script_name =404; to your PHP handling block. Click
more for details
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| Going static |
| The “why”s for writing one’s own static generator, which I want to
replace my WordPress with.
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| Hacking tint2 panel: weather, CPU temperature and volume executors |
| Adding weather, volume and CPU status a hacker friendly panel: tint2.
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| How to export Flickr to a GPX file to Geotag photos |
| Using Flickr to add GPS metadata to my photos.
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| How to send simple UTF-8 email in Python 3.x |
| Apparently, sending email in Python is painful. This is what I did to
ease it.
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| Delete stolen contacts in social networks |
| How to delete stolen contact lists - address books - from LinkedIn,
Facebook, and Twitter.
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| Automatically reading GPS information from featured image and adding as post meta in WordPress |
| Wordpress has a semi-official way of geotagging, so I decided to fill
this automatically from the featured image.
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| My home backup and minimal security system |
| I’ve recently experienced what is it like to have an “uninvited guest”
in your home while you’re away hiking - hint: it doesn’t feel good.
Since then I decided to finally put together the things I’ve been
postponing for months for various reasons - mostly for being lazy.
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| motionEyeOS mobile phone presence detection for auto on/off based on network IP or MAC address |
| I wanted my motionEyeOS system to turn on and off automatically if our
mobile phones are present on the home network.
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| Extending Press This in WordPress to support indieweb reply, like and repost |
| I’ve been able to reply/like/repost with my site for a long while, but
is wasn’t elegant, fast or slick at all; it was time to fix it.
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| The horror of chat logs |
| Can I has normalized, plain text chat logs, please? Starting from 2005,
from 7 different clients.
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| Why I still use email |
| How and why I keep using email.
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| Reducing Javascript on petermolnar.eu |
| Requiring JS to open a menu or to resize images to the viewport is not
cool.
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| Icon fonts should have meaningful unicode mappings to provide fallback |
| All the icons fonts could potentially have a relatively meaningful,
fallback Unicode character that would be shown in cases when the font
does not load for various reasons. |
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| Auto setting post format in my WordPress setup |
| WordPress with it’s custom taxonomy engine has the Post Format option,
but it would be much better to do this automatically, wouldn’t it? If me
as a human can tell the which post is what I just need to translate the
logic to PHP.
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| Getting DKIM, DMARC and SPF to work with Postfix, OpenDKIM and OpenDMARC |
| There are plenty of tutorials out there how to get DKIM, SPF, and DMARC
working, but it still took me a couple of hours to get everything right,
because each and every one of them lacks something to actually work.
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| Spotify: how good is high quality streaming? |
| Is there an actual difference between high and normal quality streaming
on Spotify? How does Spotify high quality streaming compare to CD
quality? |
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| Formatted vs unformatted size of filesystems on linux: ext3, ext4, xfs, zfs and reiserfs |
| A small comparison of formatted space differences between ext3, ext4,
xfs, zfs, btrfs, ntfs and reiserfs.
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| Why your AC wifi can't reach full speed on 3.13 kernel (Ubuntu 14.04, Mint 17, elementaryOS) |
| Less-known depths of wireless: regulations by countries and non-existent
updates for linux.
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| Disable right click blocking in Firefox or Pale Moon |
| Blocked right clicks are annoying.
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| How to build an EXIF database to understand your photography |
| Some bits of code to get stats from the EXIF data from your photos.
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| Add avatar for not comment type comments in WordPress |
| By default only comment type comments get avatars.
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| How to make WordPress secure with nginx and fail2ban |
| WPScan with Metasploit can easily hack a WordPress site - unless you
automatically block their access to the PHP level.
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| How block access to original JPG files on WordPress with nginx |
| Block access to non-resized JPG files. Use it with caution.
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| Hidden and less hidden RSS feeds on some major social networks |
| Examples for RSS feed options of some social sites.
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| Reject mails in postfix based on sender domain |
| Some bash lines to generate sender checks for postfix.
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| Disable Jetpack subscriptions CSS (3.2+) |
| Quickfix for annoying additional CSS from Jetpack.
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| How to disable SSLv3 in Firefox to avoid POODLE attack |
| Disable SSLv3 in Firefox.
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| Lightweight, secure, database-free, spamfiltering mail server with Postfix, Dovecot, openDKIM and dspam on Debian 7 |
| Configurations for a light memory use, spamfiltering, secure mailserver
on linux.
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| How I misunderstood an aspect of Indieweb |
| If the indieweb sites were not syndicating to Twitter, would it be
possible to collect the posts based on hashtags with - for example -
Google?
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| Monitor specific website with Monit |
| How to: monitor the health of a remote web address with Monit.
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| What is an old(ish) Android phone / tablet good for? |
| Old(ish) Android device? Upgrade it, use it as webcam, SMS gw, backup
server… there’s no need to throw it away.
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| WordPress + InnoDB screams for FOREIGN keys |
| No more orphaned data in WordPress if you add FOREIGN keys to your
InnoDB database.
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| Trimming the fat: THA Big Bad Cleanup of my WordPress |
| THA Big Bad Cleanup of my WordPress: from importing tweets & statuses to
posting in Markdown.
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| WordPress - insert image as Markdown Extra |
| WordPress + Markdown are not there yet, hacks needed.
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| Alternative for Google Apps on Android - living without Google on Android |
| Android without any Google App? What to use instead of Hangouts, Map,
Gmail? Is that even possible? And why would anyone want to live without
Google?
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| How to block LG smart TVs from phoning home on OpenWRT |
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| Indieweb - decentralize the web while centralizing ourselves |
| Pull your content together from the shards: decentralize the social
networks and centralize ourselves!
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| Speeding up WordPress from the backend |
| Backend ( PHP, MySQL, nginx ) tricks & tips to speed up a WordPress
setup.
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| Optimize your site experience and your image gallery for any device |
| What is the best approach to show images on smartphones & tablets? To
swipe or not to swipe? How about fluid videos? |
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| moving a site to standalone from a WordPress Network |
| Converting a blog from a WordPress Network to standalone is painful.
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| WP-FFPC: speed test |
| WP-FFPC - speeding up your WordPress site at leas 9 times.
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| WordPress Jetpack: deactivate any module |
| How to disable any module of JetPack for WordPress.
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| Character count for WordPress content and excerpt fields |
| How to add a simple character counter to excerpt & content fields in
WordPress.
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| logging nginx to rsyslog |
| log nginx to rsyslog without blocking
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| Setting up LXC containers with Debian 7 Wheezy from scratch |
| LXC - container based virtualisation from scratch on Debian Wheezy - a
slightly messy guide to start with
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| Monitor disk health with HDSentinel and collectd |
| A little shell script to connect HDSentinel to collectd.
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| fail2ban for NAT hosts |
| Centralised fail2ban for NAT firewall
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| Ramdisk in Debian Wheezy - a.k.a tmpfs |
| Use tmpfs instead of /dev/ramX in Debian Wheezy for ram based space.
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| Monit web status to JSON with PHP |
| Show monit status in JSON for other software to understand.
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| Adaptive, responsive, pure CSS3, bandwith-saving image gallery for WordPress |
| Image gallery for any device, for modern browsers, with nearly pure
CSS3.
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| elementaryOS: customize date & time in wingpanel |
| Quick hack for elementaryOS time display: use custom format. |
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| Lightweight resource monitoring with collectd and jarmon |
| The neverending story if using less and less resource for a process
continues: replacing Munin with collectd for system resource memories. |
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| How to compile Percona Server with XtraDB 5.5 for ARM ( armhf ) |
| To make Percona run on armhf architecture there are only small changes
need to be applied.
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| Add RAM to Ubuntu 12.04+ for free: zRAM |
| More RAM for free? By installing a software?! Enter zRAM.
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| Upstart script for Dropbear SSH server |
| A very sleak upstart job script for dropbear.
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| Reposition elementaryOS dock (Plank) |
| How to move elementaryOS Luna Plank to different position.
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| Solution for: Gtk-WARNING **: Error loading theme icon |
| How to fix Gtk fatal error of PNG images.
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| My nginx version update script |
| Ever wanted a quick update on your SPDY patched nginx? This is what I
use.
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| trick to "change" CD for wine |
| Need to install something with more than one install CD-s to wine?
Here’s how.
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| Conquer your EXT partition |
| How to get “free” space on EXT filesystem without deleting anything?
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| How to move dalvik-cache to /system partition in Android |
| Move the dalvik-cache from data partition to system on rooted, S-OFF
android devices.
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| String interchange between C# to and ANSI C DLL |
| How to send and receive a string between C# and C.
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| How to make Ubuntu 12.04 LTS (Precise Pangolin) usable |
| Tweaks after install in order to achieve the usability of Linux Mint 10.
But the new mascot is pretty cute.
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| HTC Desire (Bravo): ROMs, updates, pain and suffering |
| Replacing the ROM of a HTC Desire; notes for myself if I’d ever want to
do this again.
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| Testing WordPress: the importance of PHP opcode cache |
| Testing the limits of an nginx and PHP-FPM based WordPress Network with
and without PHP APC opcode cache running on a really small KVM VPS. |
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| How to disable "Waiting up to 60 more seconds for network configuration" |
| After upgrading from Ubuntu 11.04 to 11.10 boot hangs for more than one
minute, waiting for network. Here’s how to solve it the correct way.
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| conky with ical |
| Make conky display ical calendars from the web with the help of
calcurse.
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| reduced functionality switch - case in nginx: map module |
| There’s no switch-case in nginx, though map is available for similar but
reduced functionality cases.
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| Hardening iptables with limit rates |
| How to offload the hard work of blocking brute force to iptables.
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| nginx config for a WordPress Network |
| Easy and clean nginx config for a secure WordPress Network.
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| Use OwnCloud CardDAV contacts in RoundCube ( and import .vcf to OwnCloud) |
| How to use OwnCloud CardDAV service as address book in RoundCube and how
to import vcf into OwnCloud.
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| Read registry entry string with C code |
| Reading a non-fixed-length string from registry with the help of C?
Here’s how.
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| Turn your mailbox into an archieving RSS reader |
| Most RSS readers lack something: maybe offline version, online version,
or just managed by someone 3rd party. A simple solution: back to the
basics with rss2email, turniing the news into email.
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| nginx with ownCloud 3 |
| nginx is one of the best webservers out there, owncloud make cloud
computing secure using your very own service, but putting them together
really gave me a headache.
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| CSS3 double borders - the two-coloured version |
| One element, two borders in different colours - (nearly) pure CSS3.
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| Loading a function from a DLL from C |
| Calling functions from a DLL in a C code? Don’t. But it’s possible.
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| Cross-browser CSS opacity and rotation with ClearType IE font render bug fixed |
| Really cross-browser CSS opacity or rotation with anti-aliasing even on
IE? You can do it. |
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| Mail server for a VPS: Postfix, Dovecot, Spamassassin, policyd-weight |
| Full featured mail server with memory footprint small enough even for a
VPS, with dovecot, postfix, spamassassin, clamav, policyd-weight with
all the configs you need.
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| owncloud: finally a working webDAV server in PHP |
| At last: turn your own server into your private cloud, interfacing any
webDAV or web-browser capable client - and you only need a webserver
with PHP!
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| Vertically and horizontally fluid CSS layout with height 100% |
| Totally fluid layout both vertically & horizontally with pure CSS, with
IE6 (!) compatibility.
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| Automatically version controlled directory with bazaar on linux |
| Dropbox-like file versioning functionality with bazaar VCS and
inotifywait.
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| Photoshop CS5 under linux |
| How to get Photoshop CS5 working on wine.
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| CheapVPS.co.uk KVM VPS V1 review |
| Review a small, UK based KVM VPS. Without expectations but with
surprisingly good results.
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| God save position:relative |
| How to fix Internet Explorer 8 rotation opacity bug
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| weighted average calculator code in C |
| A short code to achieve a very fast weighted filter calculator with
integers, using few resources.
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| Dell Latitude E6400 vs. Lenovo Thinkpad T400 |
| Szubjektív felhasználói élmény és vélemény két premium business gépről.
Ultrakonzervatív Lenovo Thinkpad T400 vs ultramodern Dell Latitude
E6400, avagy: Miért nincs megbízható, erős, linuxbarát és szép üzleti
notebook a piacon? |
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| Minimal Conky with HDD data, nVidia core temperature and Dell fan speed |
| Minimal, text-based conky scripts to show a really sophisticated system
monitor. |
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| Dell Latitude E6400 and Linux Mint 11 fine tuning |
| Tweaking and modifying some “minor” things in Linux Mint 11 for better
performance and usability on Dell Latitude E6400.
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| integer division without divide functionality |
| Division with integers in C, for testing 32 bit max as dividend.
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| Ubuntu 10.10 Maverick Meerkat 2.6.38 kernel vs Broadcom STA linux driver |
| Feel free to install pre-released version of ubuntu kernel into the
current!
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| Better driver for BCM4322 802.11a/b/g/n in Ubuntu 10.10 |
| In Ubuntu 10.10, Broadcom driver is old, therefore it’s full of bugs,
and totally unusable for current cards, like BCM4322. Upgrade it.
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| Ubuntu 10.04 ProFTPd with mod_sftp |
| SFTP enabled FTP: secure, chrooted FTP server.
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| apache2-mpm-itk on Ubuntu 10.04 with Virtualmin running PHP 5.3 and PHP 5.2 side-by-side |
| Run PHP 5.2 and 5.3 on the same apache, on a production hosting server,
with security? Possible, but ugly.
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| Simple batch resize & watermark with imagemagick |
| Fast & simple batch image handling with imagemagick, from the command
line.
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| Hack Netgear WG602 access point to run dd-wrt |
| The basic system of Netgear WG602 is dumb, so get DD-WRT on top of it.
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| VMWare ESXi and promiscuous mode |
| VMWare ESXi 4.1 vs promiscuous mode
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| SSL status check problems with apache behind Pound reverse proxy |
| Rely on your own HTTP headers, because the built-in ones sometimes get
lost.
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| Installing PHP 5.3 on Ubuntu 9.10 Karmic Koala |
| How to get PHP 5.3 on Karmic Koala from dotdeb.
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| A usable theme for Ubuntu Desktop: Shiki |
| I never liked Ubuntu’s Humanity theme, New Wave theme in 9.10 crashes
some applications, like F-Spot, and both are brown. Now Lucid is about
to make purple (sic!) it’s default colour, so that’s not for me as well.
The solution: shiki.
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| Changing postfix's incoming smtp port |
| Which line to change to have Postfix listen on specific ports are well?
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| Changing to policyd-weight from postfix's built-in reject_rbl_client |
| Install a weighted RBL daemon for Postfix.
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| Quick installing eBox 1.2 with managesieve and custom spam filtering under Ubuntu 8.04 |
| Although eBox has it’s own distribution, I wanted to get it work on
Ubuntu 8.04 - but the version in the repo is only 1.0, and I really
needed 1.2.
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| Installing apache2-mpm-itk on a Virtualmin based Ubuntu 8.04 |
| A brief writing on installing apache-mpm-itk on Ubuntu 8.04 server.
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| Motorola E398 |
| Nekem tetszik. Bár eddig volt egy belépő, egy közép és egy
üzleti-jellegű mobilom (Alcatel OT301, Ericsson T29s, Siemens S55),
nekem ő is tetszik. Tény, hogy néhány PIM funciót hiányolok (rendes
szinkronizálás Outlookkal, jegyzetek, hangjegyzet), de végül is nem erre
tervezték. Fiataloknak és zeneőrülteknem szánták, annak pedig tökéletes. |
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| Siemens S55 vélemény |
| Szép (formatervezési díjat nyert), jó, rendkívül okos, de túlságosan
kicsi. Az üzleti szférát célozták vele, de elfelejtették, hogy az
üzletember elsősorban telefonál, aztán a többi - arra pedig sokkal
alkalmasabb pl. a Nokia 6310i, ami a színes kijelzőt és a kamerát
leszámítva ugyanezeket tudja, csak sokkal kényelmesebb telefonálni vele. |
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| Ericsson T29s |
| Baromira elegem lett abból, hogy mindig, minden oldalon csak reklámok
vannak, de valódi cuccok nem, hát gondoltam felteszek néhányat saját
tapasztalatok alapján. |