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Mailman 3.0 – a long time coming
08.10.2015
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Lead Image © Andrey Bayda, 123RF.com
is a professional software tool, and the fan base appreciates its solid operating principles. Version 1.0 was released in mid-1999 [1], followed by 2.0 in 2000. The latest stable branch 2.1 appeared about 12 years ... Mailman 3.0 is a new major version, released 15 years after version 2.0. We put the new version through its paces and explain the installation procedure and new features.
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Automate CentOS and RHEL installation with PXE
02.02.2021
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Lead Image © Michael Kempf, Fotolia.com
--nameserver=10.42.0.10,10.42.0.11 12 # Root password 13 rootpw --iscrypted 14 # Run the Setup Agent on first boot 15 firstboot --enable 16 # Do not configure the X Window System 17 skipx 18 # System
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Fundamentals of I/O benchmarking
11.04.2016
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Lead Image © Kheng Ho Toh, 123RF.com
Example # iostat -xmt 1 /dev/sda Linux 3.16.7-21-desktop (tweedleburg) 08/07/15 _x86_64_ (8 CPU) 08/07/15 17:25:13 avg-cpu: %user %nice %system %iowait %steal %idle 1
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Five special distros for system and network admins
28.07.2025
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Lead Image © Christos Georghiou, 123RF.com
designed for Live use on optical data carriers were first seen more than 20 years ago. In the meantime, USB flash memory has largely replaced the CDs and DVDs used in the past. They are not only smaller than
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How graph databases work
04.08.2020
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Lead Image © iofoto, Fotolia.com
# Names of all persons: 11 gremlin> g.V().hasLabel('person').values('name') 12 ==>marko 13 ==>vadas 14 ==>josh 15 ==>peter 16 17 # Name of person with ID 1 18 gremlin> g.V(1).values('name') 19 ==>marko 20
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Managing FOSS applications on AIX
27.05.2025
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Lead Image © Nataliia Natykach, 123RF.com
the minimum requirements. DNF operates on AIX 7.1 TL5 and later versions. The openssl fileset, version 1.1.X.X (or higher), must be installed. Ideally you'll have the latest version on your system. You must
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Touring the top Knoppix debugging and rescue tools
30.11.2025
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Rafal Olechowski, 123RF.com
-APIC-fasteoi pciehp, ath9k 10 18: 0 0 IO-APIC-fasteoi uhci_hcd:usb4 11 19: 2384012 0 IO-APIC-fasteoi ehci_hcd:usb1 12 20: 199725 0 IO-APIC-fasteoi uhci_hcd:usb2 13 21
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Manage OpenVPN keys with Easy-RSA
06.10.2019
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Lead Image © Orlando Rosu, 123rf.com
in the background with command lines like that shown in Listing 1. Listing 1 OpenSSL from Hell openssl x509 -req -CA ca.crt -CAkey ca.key -set_serial 0x$(openssl rand -hex 16) -days 3650
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Network access control with Cisco's Identity Services Engine
07.04.2022
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Photo by Keith Hardy on Unsplash
a redundant power supply or hard disks. Its Intel Xeon 4110 processor has eight CPU cores and 32GB of RAM. Its bigger siblings, the SNS 3655 and SNS 3695, come with 12 CPU cores on the Intel Xeon 4116 CPU
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The RADOS object store and Ceph filesystem
30.11.2025
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© Brigida Soriano, Fotolia.com
/ceph/$name.keyring 04 [mon] 05 mon data = /srv/mon.$id 06 [mds] 07 [osd] 08 osd data = /srv/osd.$id 09 osd journal = /srv/osd.$id.journal 10 osd journal size = 1000 11 [mon.a] 12 host = alice 13 mon

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