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09.04.2019

Home » Archive » 2019 » Issue 50: Bpfilter »

in mv ubuntu@aws:~/slow-mv$ strace -t mv 3GB.copy 3GB 19:00:09 execve("/bin/mv", ["mv", "3GB.copy", "3GB"], 0x7ffd0e7dddf8 /* 21 vars */) = 0 19:00:09 brk(NULL) = 0x55cd7d1ce000

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Exploiting, detecting, and correcting IAM security misconfigurations

07.04.2022

Home » Archive » 2022 » Issue 68: Autom... »

:aws:iam:::policy/IAM_Policy --policy-document file://privesc.json --set-as-default { "PolicyVersion": { "VersionId": "v2", "IsDefaultVersion": true, "CreateDate": "2021-10-14T09:52:55+00:00" } } By checking the policy

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Security first with the Hiawatha web server

11.04.2016

Home » Archive » 2016 » Issue 32: Measu... »

-fastcgi are running, as expected. Listing 1 Process List root 589 0.0 0.3 142492 3092 ? Ss 20:35 0:00 nginx: master process /usr/sbin/nginx -g daemon on; master_process on; www

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Julia: A New Language For Technical Computing

31.05.2012

Home » HPC » Articles »

_mat_stat 3.37 39.34 11.64 54.54 22.07 8.12 rand_mat_mul 1.00 1.18 0.70 1.65 8.64 41.79 Table 1: Benchmark Times

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Comparing startup times of Linux distros in the cloud

27.09.2021

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

this option to ask for "one ping only, please" (Listing 1). Listing 1 One Ping Only $ ping -o 52.90.56.122; sleep 2; ssh ubuntu@52.90.56.122 PING 52.90.56.122 (52.90.56.122): 56 data bytes

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Prepare, analyze, and visualize data with R

07.06.2019

Home » Archive » 2019 » Issue 51: Self-... »

Lead Image © Buchachon Petthanya, 123RF.com

(dayOfYear):as.factor(wday)Monday 16.64 18 8.382 < 2e-16 *** s(dayOfYear):as.factor(wday)Saturday 11.29 18 3.307 3.00e-09 *** s(dayOfYear):as.factor(wday)Sunday 12.92 18 4.843 1.02e-13 *** --- Signif. codes: 0

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Tips and Tricks for Containers

12.05.2020

Home » HPC » Articles »

or to commit it as an image to a local repository. The docker commit command run outside of the container commits the container’s changes into a new image. The overall process of extending a Docker container

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Secure your data channel with stunnel

25.03.2020

Home » Archive » 2020 » Issue 56: Secur... »

ZJOUoUsZGlkk client2:q0eL78zFrbnESW6c/F0qit5MNCpS8IBgyh1BdXiyyuI client3:zkq8eT31Nib3IHWfp0yyu15BCW52VMbY8+LhVUt3ylA The client uses the appropriate password in the /etc/stunnel/psk-client1.txt file: client1:Wf

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Managing virtual machines

30.11.2025

Home » Archive » 2012 » Issue 09: Windo... »

"creating" $vmname 09 10 virsh suspend rhstorage 11 virt-clone -o rhstorage -n $vmname -f /var/lib/libvirt/images/$vmname.qcow 12 virsh resume rhstorage 13 14 oldmac="52:54:00:B4:DF:EB" 15 newmac

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A Btrfs field test and workshop

31.10.2025

Home » Archive » 2012 » Issue 11: Cloud... »

, followed by an installation guide using a virtual instance of Ubuntu 12.04 as an example. Then, I'll demonstrate the main administration tool. Following this, the root filesystem on a test system

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