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93%
Using Libvirt with Python to manage virtual machines
21.08.2014
Home »  Archive  »  2014  »  Issue 22: OpenS...  » 
Lead Image © fourseasons, 123RF.com
changes. On recent systems, you can use polkit to do this. As of version 0.112, you even have a separate engine, which you can feed with JavaScript-based rules. You can really do some interesting things ... 22
93%
Exploring the Relax and Recoverbackup and rescue system
21.08.2014
Home »  Archive  »  2014  »  Issue 22: OpenS...  » 
Lead Image © Rgbspace, Fotolia.com
binary packages for most major Linux major distributions. Fedora, for instance, offers an older Version 1.12 in the Fedora repository as well as a current ReaR Version 1.15 in Fedora updates. CentOS users ... 22
93%
Save and Restore Linux Processes with CRIU
21.08.2014
Home »  Archive  »  2014  »  Issue 22: OpenS...  » 
Lead Image © Valentin Volkov, 123RF.com
. On Ubuntu and Debian the appropriate packages go by the names libprotobuf-c0-dev and protobuf-c-compiler; look out for similar names on other distributions. CRIU also relies on iproute2 – at least version 3.5.0 ... 22
93%
Tool your HPC systems for data analytics
21.08.2014
Home »  Archive  »  2014  »  Issue 22: OpenS...  » 
Lead Image © Sergey Nivens, 123RF.com
[6] Julia (up and coming) [7] Java [8] Matlab [9] and Matlab-compatible tools (Octave [10], Scilab [11], etc.) Java is the lingua franca of MapReduce [12] and Hadoop [13]. Many toolkits ... 22
93%
Disaster recovery for Windows servers
21.08.2014
Home »  Archive  »  2014  »  Issue 22: OpenS...  » 
Lead Image © joseasreyes, 123RF.com
Critical -backupTarget: -quiet Display all assigned partitions that are included in the backup: wbadmin start backup -include::,...,N>:-backupTarget:: -quiet ... 22
93%
Using Expect scripts to automate tasks
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Kheng Ho Toh, 123RF.com
% of 454.22GB Processes: 168\r 60 Memory usage: 22% Users logged in: 1\r 61 Swap usage: 0% IP address for eth0: 192.168.1.250\r 62 \r 63 Graph this data ... 12
92%
Netcat – The admin's best friend
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Dmitry Rukhlenko, 123RF.com
): { echo -ne "HTTP/1.0 200 OK\r\n\r\n"; \ cat filename.tar.gz; } | nc -l -p 15000 Be warned that this might not work for you, but with some trial and error, to enable some extra interaction, you could try ... 12
92%
Security without firewalls
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© rukanoga, 123RF.com
starting 12.34, so, for example, 12.34.56.78 will be allowed to connect to ALL services and not just SSH. As well as these flexible options, you can also declare old school subnets directly: sshd: 1.2.3.4/255.255.255.0 ... 12
91%
Reading and understanding database execution plans
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Gunnar Pippel, 123RF.com
------------------------------------------------------------------------------ 10 Hash Join <+>2<+>( cost=3091.01..13119.07 rows=59654 width=1286) 11 Hash Cond: (s.employee_id = e.employee_id) 12 -> Index Scan using sale_date on sales s (cost=0.01..3893.82 rows=59654 width=251 ... 12
71%
Zabbix release 2.2
20.05.2014
Home »  Archive  »  2014  »  Issue 20: IPv6...  » 
Lead Image © bowie15, 123RF.com
the Zabbix server. Zabbix nodes are subordinate servers but offer the same functions as a Zabbix server. In version 2.2, Zabbix has more than 100 new features compared with version 2.0.9. For example, a value ... in version 2.2. ... Zabbix 2.2 ... Zabbix release 2.2

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