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Managing Linux systems with Spacewalk
14.11.2013
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Lead Image © NASA
use strict; 04 use Exporter; 05 use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS); 06 07 $VERSION = 1.0; 08 @ISA = qw(Exporter); 09 @EXPORT = (); 10 @EXPORT_OK = qw
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Nagios alerts implemented via VoIP
14.03.2013
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© Zentilia, 123RF.com
http://www.pjsip.org/release/2.0./pjproject-2.0.1.tar.bz2 Next, go to the directory where you unpacked the tarred and zipped file and type: ./configure make dep make You will now have a file starting
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Analyzing tricky database problems
14.03.2018
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Photo by Quino Al on Unsplash
that can be reset. However, with MariaDB 10.0.12, the performance tables are deactivated by default. To activate them, the database admin adds the line performance_schema=on to the my.cnf file. Detailed
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New features in MariaDB 10.3
05.02.2019
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Lead Image by Adarsh Kummur on Unsplash
SQL> SELECT * FROM marks; 11 12 SQL> DELIMITER // 13 14 SQL> CREATE AGGREGATE FUNCTION agg_count(x INT) RETURNS INT 15 BEGIN 16 DECLARE count_students INT DEFAULT 0; 17 DECLARE CONTINUE HANDLER
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Transcoding optical media in Linux
05.12.2019
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Lead Image © Pavol Stredansky
. Whereas video CDs usually have a capacity of around 700MB, video DVDs that follow the DVD-18 standard can store around 17GB. The significantly higher storage capacity not only makes it possible to offer
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Look for file changes and kick off actions with Watchman
10.04.2015
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Lead Image © leksele, 123RF.com
Watchman is an open source tool developed by Facebook and released under the terms of Apache License 2.0. The Watchman website [1] states: "Watchman exists to watch files and record when they change
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Combining containers and OpenStack
09.10.2017
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Lead Image © Dmitriy Melnikov, Fotolia.com
stack17987 0.1 1.2 224984 49332 pts/35S+15:450:19 /usr/bin/python /usr/bin/magnum-api stack18984 0.0 1.4 228088 57308 pts/36S+15:450:06 /usr/bin/python /usr/bin/magnum-conductor $ Kubernetes, Mesos
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System temperature as a dimension  of  performance
28.11.2022
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Lead Image © Lucy Baldwin, 123RF.com
of alternative sources. Listing 1 sensors Output federico@ferenginar:~$ sensors k10temp-pci-00c3 Adapter: PCI adapter temp1: +42.5¡C (high = +70.0¡C) (crit = +100.0¡C
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HTML to database with a Perl script
30.11.2020
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Lead Image © Danila Krylov, 123RF.com
for the categories representing the language that was identified in the menu iframe. Listing 1 HTML iframes 01 02 03
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New features in PHP 8
02.02.2021
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Lead Image © Maxim Borovkov, 123RF.com
On if $lever is set to Up or Down. If none of the comparison values before => are correct, the default value applies. Listing 1 match $flasher = match ($lever) { 0 => "Warning_Flasher", 'Up

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