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Using Expect scripts to automate tasks
31.10.2025
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© Kheng Ho Toh, 123RF.com
"ps -ef|grep apache\r 76 www-data 555 23171 0 Oct07 ? 00:00:00 /usr/sbin/apache2 -k start\r 77 www-data 556 23171 0 Oct07 ? 00:00:00 /usr/sbin/apache2 -k start\r 78 www-data 557
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Time flies, but it can still be measured
31.10.2025
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-switched voluntarily x Exit status of the command Listing 3 Page Faults $ /usr/bin/time gcc test.c -o test 0.03user 0.01system 0:00.07elapsed 70%CPU (0avgtext+0avgdata 25088
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Reading and understanding database execution plans
31.10.2025
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© Gunnar Pippel, 123RF.com
"."EUR_VALUE">=10) 26 3 - access<+>6<+>( "S"."SALE_DATE">TRUNC(SYSDATE@!) 27 -INTERVAL'+00-06' YEAR(2) TO MONTH) 1  The explain plan for command only stores the execution plan in the PLAN_TABLE. 2  The DBMS
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Creating and evaluating kernel crash dumps
31.10.2025
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© Giuseppe Ramos, 123RF.com
, the problem of writing a dump to an MD RAID or transferring larger kernel images ultimately proved unfixable. Further attempts with Netdump (Red Hat) or Diskdump [3] in 2002 and 2004 also had only moderate
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One metric to rule them all
31.10.2025
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/loadavg/ [3]: 1.00 0.97 0.94 1/1279 7743 The three additional numbers provided by Linux are the number of running processes (one in this case), the total number of processes, and the last process ID (PID
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Give your servers the once over with Nmap
31.10.2025
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© ragsac, 123RF.com
ADDRESS [Cut first seven hops for brevity] 8 10.59 so-4-2-0.mpr3.pao1.us.above.net (64.125.28.142) 9 11.00 metro0.sv.svcolo.com (208.185.168.173) 10 9
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Introduction to OpenMP programming
31.10.2025
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© Frank Rohde, 123RF.com
[3] to solving the questions. Although not the most efficient or fastest method for solving the problem, it does illustrate how one can use OpenMP to parallelize applications. I will be using
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A Btrfs field test and workshop
31.10.2025
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© Adrian Hillman, 123RF.com
. Enterprise-Level Features Btrfs is a copy-on-write (COW) filesystem. Whereas a filesystem like ext3 logs block changes in a journal, Btrfs always writes changes to a block at a new location on the disk
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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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Find Entra ID vulnerabilities with AzureADRecon
07.10.2025
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Photo by Ricardo Gomez Angel on Unsplash
ADRecon at 3 a.m. every night" $scriptPath = "C:\code\runazadrecon.ps1" # Path to the PowerShell script to be executed # Define triggers that execute the task $trigger = New-ScheduledTaskTrigger -Daily -At "03:00