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25%
The practical benefits of network namespaces
15.08.2016
Home »  Archive  »  2016  »  Issue 34: Softw...  » 
Lead Image © Morganimation, fotolia.com
it through a ping test. The routing table, as defined in line 12, is only present in the ns1 namespace. With /etc/netns/ns1, $ mkdir -pv /etc/netns/ns1 mkdir: created directory ?/etc/netns? mkdir: created
25%
HDF5 with Python and Fortran
21.03.2017
Home »  HPC  »  Articles  » 
   # =================== 09   # 10  if __name__ == '__main__': 11  12      f = h5py.File("mytestfile.hdf5", "w") 13  14      dset = f.create_dataset("mydataset", (100,), dtype='i') 15     16      dset[...] = np.arange(100) 17
25%
SmartOS: Cool Cloud Platform Rises from the Ashes of Solaris
10.06.2014
Home »  Articles  » 
kernel 3.12, so that SmartOS at least installed without error messages, although it would hang if you tried to launch a KVM machine. Although you don’t have to worry about installation, you do need to set
25%
Get Started with Parallel CPython
07.11.2011
Home »  HPC  »  Articles  » 
 if '__main__' == __name__: 09  10     p1 = Process(target = test, args = ('Rich',)) 11     p2 = Process(target = test, args = ('Nus',)) 12     p3 = Process(target = test, args = ('Geeks',)) 13  14     p2
25%
Jenkins Configuration as Code
07.06.2019
Home »  Archive  »  2019  »  Issue 51: Self-...  » 
Lead Image © Amri Wolfgang, 123RF.com
_HOME=/ephemeral/jenkins 10 11 # for main web interface: 12 EXPOSE ${HTTP_PORT} 13 14 ENV JENKINS_HOME=${JENKINS_HOME} 15 ENV CASC_JENKINS_CONFIG=/jcasc_config 16 17 COPY jcasc_config/* ${CASC_JENKINS_CONFIG}/ 18 19 RUN mkdir
25%
Single sign-on like the big guys
20.06.2022
Home »  Archive  »  2022  »  Issue 69: Terra...  » 
Lead Image © Sergey Nivens, 123RF.com
_ADMIN=admin 10 - KEYCLOAK_ADMIN_PASSWORD=SOME_PASSWORD 11 - KC_DB=postgres 12 - KC_DB_URL=jdbc:postgresql://postgres:5432/keycloak 13 - KC_DB_USERNAME=postgres 14 - KC
25%
Embarrassingly parallel computation
01.06.2024
Home »  Archive  »  2024  »  Issue 81: Load...  » 
Lead Image © Lucy Baldwin, 123RF.com
* argv[]) 08 { 09 long niter = 1000000000; 10 int myid; //holds process's rank id 11 double x,y; //x,y value for the random coordinate 12 int i; 13
25%
A watchdog for every modern *ix server
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Photo by Sudhith Xavier on Unsplash
-rf /var/lib/apt/lists/* 09 10 RUN >/etc/machine-id 11 RUN >/var/lib/dbus/machine-id 12 13 EXPOSE 22 14 15 RUN systemctl set-default multi-user.target 16 RUN systemctl mask dev-hugepages.mount sys
25%
Have a Bash with the Zing network utility
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Photo by Micah Tindell on Unsplash
for Internal Network zing.bash -c 4 -op 2 -p 80,443 10.0.0.23 ZING:80/ 10.0.0.23 / Warning: Error: on 80 is: Active. Continue. Port: 80: op 1.1. 10.0.0.23 80 Time: 28 ms. Port: 80: op 1.2. 10.0.0.23 80 Time
25%
Interprocess communication essentials in Perl
05.12.2019
Home »  Archive  »  2019  »  Issue 54: NVMe...  » 
Lead Image © Carsten Reisinger, 123RF.com
to send STDOUT to a file or you can use the notation $this_value = `this_program 1>&2`; to catch a program's STDOUT and STDERR. This example shows the backtick method, but you can also use the open

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