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27%
Give your servers the once over with Nmap
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© ragsac, 123RF.com
.nmap.org (64.13.134.52): Not shown: 994 filtered ports PORT STATE SERVICE VERSION 22/tcp open ssh OpenSSH 4.3 (protocol 2.0) 25/tcp closed smtp
27%
Measuring the performance of code
04.08.2020
Home »  Archive  »  2020  »  Issue 58: Graph...  » 
Lead Image © Lucy Baldwin, 123RF.com
, repeating the measurement 100,000 times leads to an approximate time measurement of 6ns for the round n Figure 4: Bench testing round() in C: 6.23ns fast
27%
Warewulf 4 – Python and Jupyter Notebooks
13.04.2023
Home »  HPC  »  Articles  » 
of packages in the file req.txt in the home directory of the anaconda user that can be used to create the shared_env environment: $ /opt/apps/anaconda3/bin/conda create -n shared_env --file ./req
27%
Monitor your nodes with collectl
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© nobeastsofierce, 123RF.com
with a similar noarch RPM or from source. Be sure to watch for the RPM dependencies – in particular, the tool called ColPlot [5] uses Apache (web server) and gnuplot [6] to plot the results. To start, I'll assume
27%
Baselines are more important than  the  benchmark
06.10.2022
Home »  Archive  »  2022  »  Issue 71: Kuber...  » 
Lead Image © Lucy Baldwin, 123RF.com
, as opposed to what theory predicts. The OpenSSL project incorporates two useful benchmarks: openssl speed [6], which tests cryptographic performance in abstract on the local machine without any network access
27%
OpenFlow-capable Zodiac WX access point
16.08.2018
Home »  Archive  »  2018  »  Issue 46: CMS S...  » 
Photo by Florian Biedermann on Unsplash
is a MIPS 74Kc. The system has 128MB of RAM and two connections for Gigabit Ethernet, one of which can also be used for the power supply. The wireless interface supports the fast 802.11ac standard (and
27%
Configuring the JBoss application server
30.11.2025
Home »  Archive  »  2011  »  Issue 4: Secure...  » 
HONGQI ZHANG, 123RF.com
AS required a JDK, because it provided a compiler for Java code. The compiler is needed to compile JSP files. Current versions – that is, AS5 or AS6 – can make do with a JRE, because the JBoss distribution
27%
Dynamic routing in Linux with Quagga
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© petrol, 123RF.com
], Open Shortest Path First (OSPF) [5] [6], Border Gateway Protocol (BGP) [7], and Intermediate System to Intermediate System (IS-IS) [8] – and it modifies the kernel routing table on the routes it learns
26%
Using a Bash script to mirror external monitors
10.06.2015
Home »  Archive  »  2015  »  Issue 27: Fault...  » 
Lead Image © bowie15, 123RF.com
" ; shift 20 local display_list="$1" 21 while read display width_mm height_mm width height ; do 22 if [[ "$display" == "$find_display" ]] ; then 23 echo ${width}x${height} 24
26%
Secure remote connectivity with VS Code for the Web
28.11.2023
Home »  Archive  »  2023  »  Issue 78: Domai...  » 
Lead Image © fckncg, 123RF.com
): ssh-keygen -t ed25519 -a 100 -f ubuntu-sre-id_ed25519 -q -N 2. Copy the SSH public key data on the target server to the authorized_keys file in the $HOME/.ssh directory. You can use the secure copy

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