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40%
Reading and understanding database execution plans
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Gunnar Pippel, 123RF.com
s 04 4> JOIN employees e ON (s.employee_id = e.employee_id) 05 5> WHERE s.sale_date > trunc(sysdate) - INTERVAL '6' MONTH 06 6> AND s.eur_value >= 10; 07 Explained. 08 09 SQL> select * from table
40%
Processing the new sudo logging format
26.03.2025
Home »  Archive  »  2025  »  Issue 86: Data...  » 
Photo by Kelly Sikkema on Unsplash
(s_sudojson); parser(p_json); destination(d_sudo); }; Listing 2 New Logfile Format May 22 09:38:51 user tscherf ran /usr/bin/vim on host master.ipa.test using sudo May 22 09:38:52 user tscherf ran
40%
pfSense firewall and router distribution
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Sergey Mironov, 123RF.com
access point, a DNS server, and even a WLAN access point. Despite all this, the complete system weighs in at just 100MB, and to get started, you just need a USB stick and 128MB of RAM. If the built
40%
Get the best out of your bandwidth with tc
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Russell Shively, 123RF.com
your average packet size is. Tools such as Snort [2] will run for a few minutes and offer detailed data about your networks protocol usage. Ntop [3] is another example that will also give information
40%
Quick patches with Ansible
27.05.2025
Home »  Archive  »  2025  »  Issue 87: Light...  » 
Lead Image © David Crockett, Fotolia.com
for list elements, which is why any number of tasks can be strung together. This playbook tells Ansible to run the two commands on all dns_servers (line 3). I used the ansible.builtin.command (lines 6 and 9
40%
Managing computers with Rex
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Stanislav Rishnyak, 123RF.com
computers running the Linux distributions CentOS 5 and 6, Debian 5 and 6, Fedora, Gentoo, Mageia, openSUSE, RHEL 5 and 6, Scientific Linux, and Ubuntu 10.04, 11.04, and 12.04. Additionally, it can handle
40%
Managing FOSS applications on AIX
27.05.2025
Home »  Archive  »  2025  »  Issue 87: Light...  » 
Lead Image © Nataliia Natykach, 123RF.com
://sisko//aixtoolbox -dump Index of /aixtoolbox * [1]Parent Directory * [2].Version * [3]CONTENTS.toolbox * [4]LICENSES/ * [5]README.toolbox * [6]RPMS.bygroup/ * [7]RPMS/ * [8
40%
Tuning your filesystem's cache
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
experience [2]. A good tool for cache control is vmtouch [3], which is at home on most Linux 2.6, FreeBSD 7.x, or Solaris 10 kernels; mileage may vary on other *nix variants. Expect partial functionality
40%
One metric to rule them all
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
of how many cores a system has because that will alter the system's reaction to load changes. Using stress [6], you can create purely CPU-bound tasks to target a specific system load: stress --cpu 3
40%
Compressed Archives for User Projects
11.08.2025
Home »  Articles  » 
it is a little bigger, at 31899301. Listing 3: Files in the Compressed Archive laytonjb@laytonjb:~/DATA_STORE$ ls -lstar total 62316 31152 -rw-rw-r--  1 laytonjb laytonjb 31897275 Aug  2 09:52 data1_08022025.tar

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