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100%
A Btrfs field test and workshop
31.10.2025
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© Adrian Hillman, 123RF.com
is now possible. To do this, you need to modify the /etc/fstab file to point to the desired snapshot, rather than to subvol=@ (here, this is @apt-snapshot-2012-07-23_08:52:34). One grub-update and one
98%
Using Expect scripts to automate tasks
31.10.2025
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© Kheng Ho Toh, 123RF.com
-- "PASSWORD\r" 49 expect -exact "\r 50 Linux aspen 2.6.32-43-server #97-Ubuntu SMP Wed Sep 5 16:56:41 UTC 2012 x86_64 GNU/Linux\r 51 Ubuntu 10.04.4 LTS\r 52 \r 53 Welcome to the Ubuntu Server!\r 54
96%
Dynamic routing in Linux with Quagga
31.10.2025
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© petrol, 123RF.com
password 8 ZDF339a.20a3E 05 log file /var/log/quagga/zebra.log 06 service password-encryption 07 ! 08 interface eth0 09 multicast 10 ipv6 nd suppress-ra 11 ! 12 interface eth1 13 ip address 10
96%
Give your servers the once over with Nmap
31.10.2025
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© ragsac, 123RF.com
.nmap.org (64.13.134.52): Not shown: 994 filtered ports PORT STATE SERVICE VERSION 22/tcp open ssh OpenSSH 4.3 (protocol 2.0) 25/tcp closed smtp
93%
Managing computers with Rex
31.10.2025
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© Stanislav Rishnyak, 123RF.com
on the administrator's own machine, which even can be a Windows or Mac OS X machine; the only important thing is that you have a Perl environment in place. To install Rex, first pick up the git versioning tool (using
92%
Securing email communication with GnuPG
07.10.2025
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Photo by Amol Tyagi on Unsplash_Key.jpg
output similar to ed25519 2022-08-29 [SC] [expires: 2027-08-20] uid [ultimate] Name name@example.org updgef8corpy81hia1rhd8npqiti6nzf @example.org In the output you will see a 32-character string
91%
News for Admins
07.10.2025
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.13, and more This version also ships with several desktop environments, including: Gnome 48 KDE Plasma 6.3 LXDE 13 LXQt 2.1.0 Xfce 4.20 Debian 13 will be supported for the next five
90%
Introduction to OpenMP programming
31.10.2025
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© Frank Rohde, 123RF.com
application. Today, it's very easy to get laptops with at least two, if not four, cores. Desktops can easily have eight cores with lots of memory. You can also get x86 servers with 64 cores that access all
90%
Creating KVM machines with BoxGrinder and VMBuilder
31.10.2025
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© yewkeo, 123RF.com
Service (Amazon S3) 19 - ami plugin for Amazon Simple Storage Service (Amazon S3) 20 - sftp plugin for SSH File Transfer Protocol 21 - ebs plugin for Elastic Block Storage 22 - local plugin
88%
Moving HPC to the cloud
31.10.2025
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© Zarko Cvijovic, 123RF.com
will provide sub-par performance. A deeper treatment of these issues can be found in a recent article called "Will HPC Work in the Cloud?" [3]. Finally, any remote computation scheme needs to address

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