All Items

This page is an overview of all items on this website, including tutorials, articles, scripts, software and more. It is sorted on date, most recent first.

  1. ncdu - for troubleshooting diskspace and inode issues
  2. Adding IPv6 to a keepalived and haproxy cluster
  3. atop is broken on Ubuntu 16.04 (version 1.26): trap divide error
  4. Backup OpenStack object store or S3 with rclone
  5. Openstack Horizon, remove the loading modal with uBlock Origin
  6. Distributed load testing with Tsung
  7. Run software on the tty1 console instead of getty login on Ubuntu 14.04 and 16.04
  8. Check HTTP status code for a page on all DNS records
  9. Burn in testing for new Hypervisor and Storage server hardware
  10. Openstack Soft Delete - recover deleted instances
  11. Running WPS-8 (Word Processing System) on the DEC(mate) PDP-8i and SIMH
  12. Traceroute IPv6 to Smokeping Target config
  13. Ansible: access group vars for groups the current host is not a member of
  14. Sparkling Network
  15. haproxy: restrict specific URLs to specific IP addresses
  16. OpenStack: Quick and automatic instance snapshot backup and restore (and before an apt upgrade) with nova backup
  17. Create a PDP-8 OS8 RK05 system disk from RX01 floppies with SIMH (and get text files in and out of the PDP-8)
  18. Overflow the Investigatory Powers Bill!
  19. Build a FreeBSD 11.0-release Openstack Image with bsd-cloudinit
  20. Nitrokey gnuk firmware update via DFU
  21. MySQL restore after a crash and disk issues
  22. Firefox History stats with Bash
  23. Create /etc/shadow crypted password entries
  24. Mouse movement via the keyboard with xdotool and xbindkeys
  25. IPSEC VPN on Ubuntu 16.04 with StrongSwan
  26. Nagios 4 + Nagiosgraph (latest) installation on Ubuntu
  27. Ansible - Create OpenStack servers with Ansible 2.0 and the os_server module and a dynamic inventory
  28. FST-01 gnuk firmware update via USB
  29. Ansible - create playbooks and role file and folder structure
  30. Reset iptables to ACCEPT all (backup and remove all existing rules)
  31. Nitrokey Start: Getting started guide (gnuk openpgp token)
  32. Nitrokey HSM/SmartCard-HSM and Raspberry Pi web cluster
  33. Raspberry Pi unattended upgrade Raspbian to Debian Testing
  34. Storing arbitraty data in the Nitrokey HSM/SmartCard-HSM with Elementary Files (EF)
  35. Use the Nitrokey HSM or SmartCard-HSM with sc-hsm-embedded, mod_nss and Apache (read only module)
  36. Decrypt/Extract Nitrokey HSM/SmartCard-HSM RSA private keys
  37. Use the Nitrokey HSM or SmartCard-HSM with mod_nss and Apache
  38. Get started with the Nitrokey HSM or SmartCard-HSM
  39. HTTP Strict Transport Security for Apache, NGINX and Lighttpd
  40. Toggling in a simple program DEC PDP-8 and PiDP-8 using the switch register
  41. Ansible - Add an apt-repository on Debian and Ubuntu
  42. Migrating personal webapps and services
  43. Build a FreeBSD 10.3-release Openstack Image with bsd-cloudinit
  44. IPv6 in a Docker container on a non-ipv6 network
  45. Active Directory and Exchange Command Line Powershell
  46. Let's Encrypt with DirectAdmin, now built in!
  47. Recap of week 04, 2016
  48. Recap of week 03, 2016
  49. Ansible playbook for GoAccess Log Analyzer
  50. Recap of week 02, 2016
  51. Deborphan cleanup until no more orphaned packages left
  52. Recap of week 01, 2016
  53. Microsoft Office 2013 and 2010 on Linux
  54. Recap of week 53, 2015
  55. Recursively find all [installed] package dependencies
  56. Recap of week 52, 2015
  57. IPSEC VPN on Ubuntu 15.04 with StrongSwan
  58. IPSEC VPN on Ubuntu 15.10 with StrongSwan
  59. Recap of week 51, 2015
  60. Forward or save outgoing email with Exim
  61. Recap of week 50, 2015
  62. Generate hashes of files with rhash for archival storage
  63. Let's Encrypt with DirectAdmin or other Web Control Panels
  64. Linux Containers
  65. Encrypt and decrypt files to public keys via the OpenSSL Command Line
  66. Sign and verify text/files to public keys via the OpenSSL Command Line
  67. Make OpenELEC/Kodi work with the Sitecom CN-524/ Cambridge Silicon Radio (CSR) 8510 A10 Bluetooth USB adapter on the Raspberry Pi.
  68. Ansible - Only do action if on specific distribution (Debian, Ubuntu, CentOS or RHEL) or distribution version (ubuntu precise, ubuntu trusty)
  69. Install Ubuntu Linux on the LG Chromebase
  70. Running TSS/8 on the DEC PiDP-8/i and SIMH
  71. Running Adventure on the DEC PDP-8 with SIMH
  72. Find all services using libssl to restart after an OpenSSL update
  73. Strong SSL Security on nginx
  74. Stong SSL Security on lighttpd
  75. Strong SSL Security on Apache2
  76. Openstack - (Manually) migrating (KVM) Nova compute virtual machines
  77. The awesomely epic guide to KDE
  78. Filing Effective Bug Reports
  79. Raspberry Pi Arcade Machine
  80. OpenSSL command line Root and Intermediate CA including OCSP, CRL and revocation
  81. systemd: Don't fear change
  82. OpenSSL: Manually verify a certificate against a CRL
  83. Keep messages secure with GPG
  84. Olimex OlinuXino A20 LIME2 mainline 4.0.0 kernel, u-boot and debian rootfs image building tutorial
  85. How I got a valid SSL certificate for my ISP's main domain, xs4all.nl
  86. Automating Openstack with cloud init run a script on VM's first boot
  87. Build a Flexible and Powerful System with Arch Linux
  88. Ada Lovelace and The Analytical Engine
  89. Python: build dynamic web pages
  90. Solve word puzzles with bash
  91. Euclid's algorithm: recursion and python
  92. Openstack Glance Image Download, download Openstack images
  93. Installing Virtual Machines with virt-install, plus copy pastable distro install one-liners
  94. Remove Installatron from a (Directadmin) server
  95. Raspberry Pi FM radio transmitter with Buttons
  96. Olimex OlinuXino A20 LIME2 Minimal Debian 7 Image
  97. OpenVZ/Proxmox - pre-backup all container dump script
  98. Filtering IMAP mail with imapfilter
  99. Broken Corrupted Raspberry Pi SD Card
  100. Shared Git repository over ssh for multiple users
  101. Get all IP ranges from an AS number
  102. pfSense allow web interface access on WAN from specific IP
  103. IPSEC VPN on Centos 7 with StrongSwan
  104. HTTP Public Key Pinning Extension HPKP for Apache, NGINX and Lighttpd
  105. Arch Linux AUR PKGBUILD generate new checksums
  106. Ansible - Only if a file exists or does not exist
  107. Fix inconsistent Openstack volumes and instances from Cinder and Nova via the database
  108. Clear Uncluttered SSH client config with Ansible
  109. Olimex OlinuXino a10 Lime uBoot, Kernel and root image guide
  110. ingsoc
  111. IPSEC L2TP VPN on Ubuntu 12.04 with OpenSwan, xl2tpd and ppp
  112. IPSEC L2TP VPN on Ubuntu 13.04 with OpenSwan, xl2tpd and ppp
  113. IPSEC L2TP VPN on CentOS 6 / Red Hat Enterprise Linux 6 / Scientific Linux 6
  114. IPSEC L2TP VPN on Arch Linux on a Raspberry Pi with OpenSwan, xl2tpd and ppp
  115. IPSEC L2TP VPN on Ubuntu 14.04 with OpenSwan, xl2tpd and ppp
  116. IPSEC L2TP VPN on Ubuntu 12.10 with OpenSwan, xl2tpd and ppp
  117. IPSEC L2TP VPN on Ubuntu 13.10 with OpenSwan, xl2tpd and ppp
  118. Openstack Affinity Groups, make sure instances are on the same or different compute hypervisor hosts
  119. Ansible - Only if host is also in other hostgroup
  120. Build a FreeBSD 10.1-release Openstack Image with bsd-cloudinit
  121. OpenSSL Decoder Script
  122. OpenSSL Command Generator
  123. Olimex OlinuXino a10 Lime Minimal Debian 7 Image
  124. Keepalived notify script, execute action on failover
  125. Check and Fix SSL servers for SSLv3 connections or the Poodle CVE-2014-3566 bug
  126. Configserver Firewall and Security (CSF and LFD)
  127. Patch Shellshock)with Ansible
  128. Boot to Vim, Vim as Pid 1
  129. Statically (cross) compiled vim for x86, x86-64 and mipsel
  130. Owncloud, DirectAdmin, Apache 2.4 and Error AH01797: client denied by server configuration
  131. Set your IP as wallpaper
  132. foaas.sh - Command Line Fuck Off as a Service client
  133. Get the current or all Firefox tab urls in Bash
  134. Build a $35 Time Capsule - Raspberry Pi Time Machine Backup Server
  135. Building HA Clusters with Ansible and Openstack
  136. OpenVZ/Proxmox - Container to Template
  137. Proxmox VE - One Public IP
  138. CentOS 5 CA Certificate Bundle Update
  139. Traceroute to Smokeping Target config
  140. Simple keepalived failover setup on Ubuntu 14.04
  141. Build a FreeBSD 10.0-release Openstack Image with bsd-cloudinit
  142. OSSEC 2.8 Server, Client, Web UI and Analogi Dashboard Installation tutorial
  143. Openstack Horizon installation with SSL on Ubuntu
  144. Openstack Swift Objectstore Access via FTP
  145. Encrypted Duplicity Backups to Openstack Swift Objectstore
  146. IPv6 at Home
  147. Transmission Web on a Raspberry Pi with Arch Linux
  148. FreeBSD 10, Converting from RELEASE to STABLE
  149. Linux software raid, rebuilding broken raid 1
  150. FreeBSD Ports: remove config options
  151. OpenSSL: Manually verify a certificate against an OCSP
  152. Chef: overwrite templates in wrapper-cookbooks
  153. Chef: chef_gem vs gem_package and ORDER
  154. OS X: Remove all Apple Remote Dekstop settings
  155. 3D modeling a real world object in OpenSCAD
  156. KVM add disk image or swap image to virtual machine with virsh
  157. KVM convert qcow2 disk images to raw disk images for performance
  158. KVM host with bonding and VLAN tagged Virtual Machines setup on Ubuntu 12.04
  159. Bonding NIC Teaming on Ubuntu 12.04
  160. Install extra software in the VMWare vCenter Appliance (VCSA)
  161. OpenSSL: Get all certificates from a website in plain text
  162. OCSP Stapling on Apache
  163. OCSP Stapling on nginx
  164. haproxy: intercept all cookies and set secure attribute
  165. Check if passwordless sudo can be used in a bash script or nagios check
  166. Remove unused CentOS/Red Hat kernels
  167. rc.local support on Arch Linux with systemd
  168. Ansible Inventory from VMWare
  169. Bash Bits: Simple command line arguments
  170. Ansible - Playbook Testing
  171. Local W3C HTML5 Validator Server
  172. Ansible - Only do something if another action changed
  173. Ansible - Sudo sometimes
  174. haproxy: client side ssl certificates
  175. Apache access/error log to syslog
  176. Back Up Thunderbird Message Filters
  177. Install nmap 6.40 on Ubuntu 12.04
  178. haproxy: set specific ssl ciphers
  179. haproxy: add strict transport security or any other http header
  180. haproxy: ssl backends
  181. haproxy: redirect to ssl or other website
  182. ntop-ng 1.1 installation on Ubuntu 12.04
  183. Corosync Pacemaker - Execute script on failover
  184. DigitalOcean Sucks. Use DigitalOcean!
  185. NoPriv.py - Easy IMAP Email Backup.
  186. Self Hosted CryptoCat - Secure self hosted multiuser webchat
  187. Corosync Notes
  188. Remove unused Ubuntu kernels
  189. Install the latest ZNC from source on Ubuntu
  190. Set up your own truly secure, encrypted and shared file synchronization, aka Dropbox clone
  191. OpenSSL One liner to create self signed certificate
  192. Chef: search in recipe based on roles or recipes
  193. Chef: include_recipe only_if or not_if
  194. Uninstall and Remove OSSEC
  195. Bash Bits: Check if item is in array
  196. Bash Bits: Add colour output to your script
  197. Bash Bits: Debug Logging
  198. Bash Bits: Trap Control C (SIGTERM)
  199. OSSEC Server, Client, Web UI and Analogi Dashboard Installation tutorial
  200. OS X - Enable access for assistive devices via the command line
  201. OS X - Applescript to lock date and time preference panel to fix local sudo exploit
  202. IPv4 Address Conversion Tricks
  203. OpenVZ dnsmasq set capabilities failed fix
  204. Bind DNS Query Graph Charts with GNUPlot
  205. Microsoft Exchange / Active Directory Powershell script to notify users of expiring Passwords
  206. Nagios - Hide all hosts in hostgroup
  207. Diffie Hellman Key Exchange Dutch Notes and Example
  208. OpenSSL - Generate Psuedo Random Passwords
  209. My Todo.txt Workflow, including Unison, Todour and Android
  210. Stong SSL Security on Lighttpd
  211. Pass the SSL Labs Test on NGINX (Mitigate the CRIME and BEAST attack, Disable SSLv2 and Enable Perfect Forward Secrecy).
  212. Pass the SSL Labs Test on Apache2 (Mitigate the CRIME and BEAST attack, Disable SSLv2 and Enable Perfect Forward Secrecy).
  213. OS X: Disable Notification Center
  214. bdsh - Whitelist Restricted Shell
  215. Strip all non-ascii characters from a file
  216. Samba Shares with Active Directory Login on Ubuntu 12.04
  217. Bash Incremental History Search / Autocomplete
  218. Dogtag / Red Hat Certificate System reset admin pkiconsole password
  219. Ejabberd SSL Certificate
  220. Ejabberd Active Directory LDAP Login
  221. Set up a federated XMPP Chat Network with ejabberd, your own Google Talk Hangouts alternative
  222. OS X - Turn Bonjour off or on via the command line
  223. OS X - Turn off sleep from the command line
  224. OS X - Create Hardware report SPX and save it to a AFP share
  225. Gitlab Active Directory LDAP Authentication
  226. OS X: Turn firewall on or off from the command line
  227. Exchange 2007 and 2010 Autodiscovery DNS SRV record for BIND
  228. Hide or determine BIND version number
  229. Nagios plugin to check an OCSP server
  230. Nagios plugin to check Safenet HSM
  231. Nagios plugin to check CRL expiry in minutes
  232. Join Mac OS X to an Active Directory / OpenDLAP directory from the commandline
  233. HP ILO - Quickly gather ILO version and firmware information via CURL
  234. Munin plugin to show Logstash/Kibana messages per hour
  235. Set up a Collectd client
  236. Set up a Collectd server with web frontend
  237. NGINX: Proxy folders to different root
  238. Silent unatended apt-get upgrade
  239. Ansible - sudoers safety and sanity checking in playbook
  240. NGINX: Catch all error codes
  241. NGINX: Hide / Block .git and .svn folders
  242. Ansible - pure ssh based configuration management and deployment
  243. Screenfetch installation tutorial
  244. Hosted Piwik
  245. Better Cron env and shell control with the SHELL variable
  246. Word occurrence counter and analyzer
  247. Create a VMWare ESXi 5 5.1 5.5 USB install disk
  248. Basic website and database backups with Duplicity
  249. Systemd rosetta / cheatsheet
  250. OpenSSL Generate CSR non-interactive
  251. OpenSSL match certificate and private key
  252. Munin - Fix MySQL plugin on Ubuntu 12.04 and Debian 6
  253. Munin - Set up the NGINX status plugin on Ubuntu 12.04
  254. Exploring /proc/ - tips and tricks for the procfs
  255. OpenSSL one liner to get expiry date from SSL Certificate of any website
  256. Fix CentOS IPTables rule saving (iptables: Saving firewall rules to /etc/sysconfig/iptables: /etc/init.d/iptables: line 274: restorecon: command not found)
  257. Restrict SSH
  258. RT (Request Tracker) - find and delete big attachments
  259. Install python 2.7 or 3 under Debian 6
  260. Ruby script to upload or convert a Maildir Inbox to an IMAP server
  261. Python script to monitor a file for changes and then mail the report with the file attached.
  262. Exchange 2010 - OWA - Lock user after x amount of failed logins
  263. Restore iptables rules after a reboot on debian
  264. Resize OS X Mountain Lion installer to fit on a single layer 4.7 GB DVD
  265. CIDR Cheatsheet
  266. Munin optimization guide for Debian (rrdcached, tmpfs, ionice and nice)
  267. Set OS X hostname from the commandline
  268. ClamAV installation and daily scan + report on Ubuntu
  269. Limit access to openssh features with the Match option
  270. Git-clean
  271. Set up your own distributed, redundant, and encrypted storage grid with Tahoe-LAFS
  272. Small low cost linux pc's, an overview from 11-2012
  273. Ray-Mon - PHP and Bash server status monitoring
  274. Codename Geld
  275. ed cheatsheet
  276. Persistent reverse (NAT bypassing) SSH tunnel access with autossh
  277. Nagios plugin to check certificates on local file system
  278. NutsManager
  279. PHP Task/Todo list
  280. Complete word count analysis of Security Now, episode 1 trough 370.
  281. Correctly grep and display the uptime, load average and amount of users
  282. Packages
  283. Tiny Tiny RSS
  284. Wallbase.cc commandline bash wget downloader
  285. Small Operating Systems / Linux Distributions
  286. Postfix snippets - not finished
  287. ProxBash - a bash script to manage Proxmox VE
  288. Ubuntu/Debian update mailer
  289. Terrible Start
  290. Bash - do something in every subdirectory
  291. Bash script to list all changed files in certain period
  292. Set up a local Ubuntu (apt) repository with apt-mirror
  293. NurseCalc o2 - Bash script and online app for Oxygen Calculations
  294. NurseCalc Infuus - Bash script and Online app for infusion and drip (speed) Calculations
  295. Some Bash and Arch Tweaks
  296. MagicProg: Magic the Gathering (RPG/TGC) Life Program
  297. Chrome Extensions for Privacy, Adblocking and anti-tracking
  298. Stopping fail2ban.server : ERROR Unexpected communication error and other errors in fail2ban on ubuntu 9.04
  299. Introduction to DokuWiki
  300. Introduction to Markdown
  301. Tether your Sonim XP3 phone with Linux
  302. What to do if you cannot execute CHMOD
  303. NoPriv.py - Easy IMAP email backup to HTML archive.
  304. Customize your Clonezilla Live CD
  305. Debian packages clean up commands
  306. EasyConverter
  307. SSHdialog
  308. Clonezilla Backup Script v0.2
  309. Postfix: log message from, to and subject
  310. SSH: Key and user restrictions
  311. Bash script for massive rename to numbers
  312. Javascript tricks
  313. Convert FLV's to MP3
  314. Setting up Motion with FTP and Email! support
  315. Bash ja/nee keuze
  316. Imagemagick thumbnailer
  317. Vim Cheatsheet
  318. DRAFT (Re)Building a Metro Cab Simulator part 1
  319. RET Metro ATB
  320. RET Metro Type T SG/2
  321. RET Metro Type M MG/2
  322. RET Metro ZUB
  323. About