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A Btrfs field test and workshop
31.10.2025
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© Adrian Hillman, 123RF.com
. Enterprise-Level Features Btrfs is a copy-on-write (COW) filesystem. Whereas a filesystem like ext3 logs block changes in a journal, Btrfs always writes changes to a block at a new location on the disk
17%
How to configure and use jailed processes in FreeBSD
14.03.2013
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© Corina Rosu, 123RF.com
struct jail 01 main(int argc, char **argv) 02 { 03 struct jail j; 04 int i; 05 [...] 06 /* Populate the jail struct */ 07 memset(&j, 0, sizeof(j)); 08 j.version = 0; 09 j.path =
17%
Visualizing containers with clarity
29.09.2020
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Lead Image © Ulrich Müller, 123RF.com
-line operations. To install Dockly [3], you can choose one of two routes: with npm (see the "Installation by npm" box for that route) and in a Docker container. For context, on my laptop, about 43MB of file space
17%
MySQL is gearing up with its own high-availability Group Replication solution
17.06.2017
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Lead Image © lassedesignen, 123RF.com
_checksum = NONE 06 log_slave_updates = ON 07 log_bin = binlog 08 binlog_format = ROW 09 transaction_write_set_extraction = XXHASH64 10 plugin
17%
Set up subdomains with Apache and Nginx
25.03.2021
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Lead Image © Saniphoto, Fotolia.com
89.221.14.204... Connected to www.wintermeyer.de. Escape character is '^]'. GET / HTTP/1.1 HOST: www.wintermeyer.de HTTP/1.1 301 Moved Permanently Server: nginx/1.10.3 Date: Fri, 27 Nov 2020 14
17%
DevSecOps with DefectDojo
03.04.2024
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Lead Image © Aleksey Mnogosmyslov, 123RF.com
credentials. the initializer can take up to 3 minutes to run 08 # use docker-compose logs -f initializer to track progress 09 docker-compose logs initializer ? grep "Admin password:" First, run
17%
Fundamentals of I/O benchmarking
11.04.2016
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Lead Image © Kheng Ho Toh, 123RF.com
(512 MB) copied, 49.1424 s, 10.4 MB/s If you want to empty the read and write cache for benchmark purposes, you can do so using: sync; echo 3 > /proc/sys/vm/drop_caches Sequential access
17%
Server administration with Cockpit
29.09.2020
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Photo by Joshua J. Cotten on Unsplash
.168.2.17", 04 "visible": true, 05 "color": "green", 06 "user": "root" 07 }, 08 "web server": { 09 "address": "192.168.2.4", 10 "visible": true, 11 "color": "rgb(100, 200, 0)", 12
17%
Exploring the filesystem that knows everything
14.03.2013
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Lucy Baldwin, 123RF
: 6 08 microcode : 0x60c 09 cpu MHz : 800.000 10 cache size : 6144 KB 11 physical id : 0 12 siblings : 2 13 core id : 0 14 cpu cores : 2 15 apicid
17%
Getting a free TLS certificate from Let's Encrypt
13.06.2016
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Lead Image © Stuart Miles, 123RF.com
script 06 07 WEBROOT="/var/www/backends/" 08 #we will get certificates for the following domains 09 DOMAINS="www.test-backend.com www.backend.com www.backend.net" #adjust 10 EMAILADMIN

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