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14%
Shell practice: Introduction to the sed stream editor
09.08.2015
Home »  Archive  »  2015  »  Issue 28: SSD RAID  » 
Lead Image © Dmitriy Sladkov, 123RF.com
' sed -n 's/Man//gp' textdata.txt 11 Replace 'Iron' with 'Tin' on line 4 cat textdata.txt | sed -n '4s/Iron/Tin/gp' 12 Replace '0' with '089' on all lines containing
14%
Modern Fortran for today and tomorrow
17.06.2017
Home »  Archive  »  2017  »  Issue 39: Conta...  » 
Lead Image © homestudio, 123RF.com
the domain ranges from 1 to n for both i and j . Therefore the iterations are over i = 2 to n -1 and j = 2 to n -1. You can write the iteration over the domain using array notation as follows: a(2:n-1,2:n
14%
Warewulf 4 – Python and Jupyter Notebooks
13.04.2023
Home »  HPC  »  Articles  » 
Interactive HPC applications written in languages such as Python play a very important part today in high-performance computing. We look at how to run Python and Jupyter notebooks on a Warewulf 4 ... own package; therefore, according to the module hierarchy discussed in a past Warewulf article, it should go into /opt/modulefiles/Core . The version of Anaconda I installed was 22.9.0, which is what I
14%
Protect Your Servers with Nmap
23.07.2012
Home »  Articles  » 
 
.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            53/tcp  open   domain  ISC BIND 9
14%
Give your servers the once over with Nmap
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© ragsac, 123RF.com
.34.56.78 -oN filename If you want screeds of detail, then it's also simple just to add the verbosity switch (twice for even more detail): # nmap -vv -sS 12.34.56.78 To truly avoid detection (in conjunction
13%
Improving performance with environment variables
02.08.2021
Home »  Archive  »  2021  »  Issue 64: Bare...  » 
Lead Image © sgame, fotolia.com
SGEMM for N = [2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192] A = single( rand(N,N) ); B = single( rand(N,N) ); start = clock(); C = A*B; elapsedTime = etime(clock(), start
13%
A watchdog for every modern *ix server
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Photo by Sudhith Xavier on Unsplash
guest 82a84,88 > > tee /etc/.htpasswd <<'EOF' > guest:$apr1$gz4n7s6o$P.O/V1k9rZuV9nN/5lh3l0 > admin:$apr1$esczj7wu$ffu/6j8vETMAMJaVTKn7a1 > EOF Monit is configured to load service
13%
Unleashing Accelerated Speeds with RAM Drives
02.08.2021
Home »  Archive  »  2021  »  Issue 64: Bare...  » 
Lead Image © Vladimir Nenov, 123RF.com
nvmet-rd0 -a 10.0.0.185 -s 4420 and verify that the NVMe subsystem sees the NVMe target (Listing 9). Listing 9 Verify the NVMe Target Is Seen $ sudo nvme list Node SN
13%
An army of Xeon cores to do your bidding
30.01.2024
Home »  Archive  »  2024  »  Issue 79: Monit...  » 
Lead Image © Lucy Baldwin, 123RF.com
Dell Precision Workstation T7910 Power 1,300W CPU 2x Intel Xeon Gold E5-2699 V4, 22 cores, 2.4GHz, 55MB of cache, LGA 2011-3 GPU, NPU n/a* Memory
13%
Rethinking RAID (on Linux)
25.03.2021
Home »  Archive  »  2021  »  Issue 62: Lean...  » 
Lead Image © nikkikii, 123RF.com
unused devices: Listing 5 View RAID Details $ sudo mdadm --detail /dev/md0 /dev/md0: Version : 1.2 Creation Time : Sat Jan 9 15:22:29 2021 Raid Level

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