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17%
Migrating to Azure Monitor Agent
03.08.2023
Home »  Archive  »  2023  »  Issue 76: Energ...  » 
or in the context of Application Insights. Pricing is set by region [1], but if you want to store the data for a longer period of time, the costs are considerable – currently EUR0.13/GB per month in Germany or $0.10-$0
17%
Assigning Privileges with sudo and PolicyKit
22.01.2013
Home »  Articles  » 
 
. As an alternative to the hostname, you can also specify the IP address. For an address range, just specify the subnet: klaus 192.168.2.0/255.255.255.0=(ALL)NOPASSWD:/usr/bin/apt-get upgrade In this case, the user
17%
Obtain certificates with acme.sh
27.09.2021
Home »  Archive  »  2021  »  Issue 65: 7 Em...  » 
Lead Image © Stuart Miles, 123RF.com
/.acme.sh/www.example.com/www.example.com.cer -noout -issuer -subject -dates -serial issuer= /C=US/O=Let's Encrypt/CN=R3 subject= /CN=www.example.com notBefore=Feb 21 13:00:28 2021 GMT notAfter=May 22 13:00:28 2021 GMT serial=03B46ADF0F26B94C19443669
17%
Secure and seamless server access
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Photo by Michael D on Unsplash
– assuming you have a Cloudflare account and zone: 1. Create a tunnel and collect its secret token. 2. Add a tunnel configuration specifying the tunnel behavior. 3. Add a DNS entry for Tunnel – it has
17%
Building a port scanner in Python
28.07.2025
Home »  Archive  »  2025  »  Issue 88: 5 Net...  » 
Lead Image © Leo Blanchette, 123RF.com
installed on your system. If Python is not installed, you can install it with: sudo apt install python3 With VS Code and the necessary extensions set up, you are now ready to start developing your port
17%
How Upstart boots Ubuntu-based systems
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
debuted in Ubuntu 11.10. The initctl show-config command that gives an overview of the jobs has been around since Upstart 0.6.4 (Figure 3): initctl show-config -e > output
17%
ISC 2024 from a Distance
10.06.2024
Home »  HPC  »  Articles  » 
in gigaflops per watt over time. The first Green500 list was in June 2013. The number 1 system used GPUs even then (NVIDIA K20 with QDR InfiniBand). The energy efficiency was 3,208.8Mflops/W (0.32Gflops
17%
Kea, the ISC's successor to the DHCP daemon
03.08.2023
Home »  Archive  »  2023  »  Issue 76: Energ...  » 
Photo by Markus Winkler on Unsplash
in 2014. At the time of writing, the available Kea versions were 2.2.0 (July 2022, Current-Stable) and 2.3.6 (March 2023, Experimental-Development). Most distributions have prebuilt Kea packages
17%
Netcat – The Admin’s Best Friend
20.08.2012
Home »  Articles  » 
 
examplehost.tld 22 If firewalling is in place and you need to originate your connection from a specific IP address to open a port, entering # nc -s 1.2.3.4 examplehost.tld 8181 will connect to examplhost
17%
Netcat – The admin's best friend
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Dmitry Rukhlenko, 123RF.com
seconds, for example: # nc -p 16000 -w 30 examplehost.tld 22 If firewalling is in place and you need to originate your connection from a specific IP address to open a port, then you can enter: # nc -s 1.2.3

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