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17%
Data acquisition with shell tools
30.11.2025
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Dmitriy Syechin, 123RF
clear 03 while true 04 do 05 echo "New record" 06 maxrecord=`ls -1 *.dat | sort | tail -1 | cut -d. -f 1` 07 newrecord=$(echo $maxrecord + 1 | bc ) 08 width=`echo $newrecord | wc -c` 09 10 ... 11 12
17%
Using the Expect scripting environment
30.11.2025
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© Ivan Mikhaylov, 123RF.com
expect { 09 "(yes/no)? " { 10 send "yes\r" 11 exp_continue 12 } 13 14 "word:" { 15 send "whatever\r" 16 send_tty "Key exchange needed with $host\n" 17 exp_continue 18
17%
Using a Bash script to mirror external monitors
10.06.2015
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Lead Image © bowie15, 123RF.com
"} ) 09 10 # force called programs to english output 11 LANG=C LC_ALL=C 12 13 function die { 14 echo 1>&2 "$*" 15 exit 10 16 } 17 18 function get_display_resolution { 19 local find_display="$1
17%
Better compression of web pages
22.12.2017
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.linux-magazin.de; 04 05 root /var/www/www.linux-magazin.de; 06 index index.html index.htm; 07 08 # Let's Encrypt Challenge 09 # 10 location ~ /.well-known { 11 allow all; 12 } 13 14
17%
Fast system management from Puppet Labs
30.11.2025
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© Artmann Witte, fotolia.com
= debug 06 identity = rawhide.tuxgeek.de 07 08 # connector plugin config 09 connector = stomp 10 plugin.stomp.host = activemq.tuxgeek.de 11 plugin.stomp.port = 6163 12 plugin.stomp.user = unset 13 plugin
16%
Infrastructure as Code with Terraform
18.02.2018
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Lead Image © Sebastian Duda, 123RF.com
variable "site_author" { 07 type = "string" 08 default = "Jon Doe" 09 } 10 variable "site_container" {} 11 variable "do_token" { 12 type = "string" 13 } 14 variable "key_path" {} 15 variable "ssh
16%
Using the MQTT IoT protocol for unusual but useful purposes
03.12.2015
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Lead Image © Heiko Küverling, 123RF.com
(msg.payload)) 07 08 mqtt = paho.Client() 09 mqtt.on_message = on_message 10 11 mqtt.connect("localhost", 1883, 60) 12 mqtt.subscribe("linux/+", 0) 13 14 mqtt.loop_forever() The client now connects
16%
Modularize websites with Web Components
09.04.2019
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Lead Image © Andrey Prokhorov, fotolia.com
/@webcomponents/webcomponentsjs"> 05 06 07 08 09 My Comments 10 11
12
16%
Building Virtual Images with BoxGrinder and VMBuilder
07.01.2013
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 for Scientific Linux 09 10   Available platform plugins: 11    - vmware plugin for VMware 12    - ec2 plugin for Amazon Elastic Compute Cloud (Amazon EC2) 13    - virtualbox plugin for VirtualBox 14    - virtualpc
16%
Getting a free TLS certificate from Let's Encrypt
13.06.2016
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Lead Image © Stuart Miles, 123RF.com
="hanscees@hanscees.con" #adjust 11 12 LECROOT="/etc/letsencrypt/live" 13 mkdir /root/letsencrypt #justincase 14 15 #lets get certs 16 echo "will get the certs now" & sleep 3 17 for i in `echo $DOMAINS` ; do 18 echo "getting certs

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