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17.03.2020

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PROPERTY VALUE SOURCE myvol type filesystem - myvol creation Sat Feb 22 22:09 2020 - myvol used 471K - [ ... ] ARC Operating systems commonly

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Using a Bash script to mirror external monitors

10.06.2015

Home » Archive » 2015 » Issue 27: Fault... »

and right. Unfortunately, my laptop has a 16:9 display with a resolution of 1,600x900 pixels. Common Denominator Some research on the topic of screen resolution reveals the root cause: the maximum

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Comparing startup times of Linux distros in the cloud

27.09.2021

Home » Archive » 2021 » Issue 65: 7 Em... »

ssh ubuntu@52.90.56.122; do sleep 1; done ssh: connect to host 52.90.56.122 port 22: Connection refused ssh: connect to host 52.90.56.122 port 22: Connection refused [ output truncated ] Welcome

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Modern Fortran for today and tomorrow

17.06.2017

Home » Archive » 2017 » Issue 39: Conta... »

type for variable "a" 18 type(my_struct) :: a 19 ! ... 20 write(*,*) "i is ",a%i 21 22 ! Structures (variables) of the the derived type my_struct 23 type(my_struct) :: data 24 type

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Single sign-on like the big guys

20.06.2022

Home » Archive » 2022 » Issue 69: Terra... »

_DB_PASSWORD=SOME_DB_PASSWORD 15 command: ["start-dev"] 16 17 postgres: 18 container_name: postgres 19 image: postgres:14 20 environment: 21 - POSTGRES_PASSWORD=SOME_DB_PASSWORD 22

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Introducing parity declustering RAID

28.11.2022

Home » Archive » 2022 » Issue 72: OpenS... »

. action: Replace the device using 'zpool replace'. see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-4J scan: scrub in progress since Mon Oct 24 17:11:22 2022 80.7M scanned at 80.7M

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Selecting compilers for a supercomputer

18.02.2018

Home » Archive » 2018 » Issue 43: Real... »

Lead Image Photo by Michal Kmet on Unsplash

. Infos LRZ: https://www.lrz.de/english/ Fortran: https://wg5-fortran.org/ C++: https://isocpp.org/ C: http://www.open-std.org/jtc1/sc22/wg14 SuperMUC: https

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Thread processing in Python

02.06.2020

Home » Archive » 2020 » Issue 57: Artif... »

Lead Image © Christos Georghiou, 123RF.com

= sol.copy() 10 11 for j in range(0,ny-1): 12 sol[0,j] = 10.0 13 sol[nx-1,j] = 1.0 14 # end for 15 16 for i in range(0,nx-1): 17 sol[i,0] = 0.0 18 sol[i,ny-1] = 0.0 19 # end for 20 21 # Iterate 22

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Tuning ZFS for Speed on Linux

02.06.2020

Home » Archive » 2020 » Issue 57: Artif... »

NAME PROPERTY VALUE SOURCE myvol type filesystem - myvol creation Sat Feb 22 22:09 2020 - myvol used 471K

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Build a honeypot with real-world alerts

01.08.2019

Home » Archive » 2019 » Issue 52: Stop... »

NEW -m tcp --dport 22 -j ACCEPT 10 -A INPUT -p udp --dport 5353 -j DROP 11 -A INPUT -s -p tcp -m state --state NEW -m tcp --dport 443 -j ACCEPT 12 -A INPUT -m limit --limit 30/min -j

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