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30%
Managing virtual machines
30.11.2025
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Archive
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2012
»
Issue 09: Windo...
»
VALUES ('$hostname', '$ip', '
A
', 86400, $time, 1, 0)/; 21 } else {
22
$sql = qq/UPDATE records SET content = '$ip' WHERE name = '$hostname'/; 23 } 24 $sth->finish();
25
$dbh->do($sql) or warn $dbh ...
9
30%
Monitor your nodes with collectl
30.11.2025
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2012
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Issue 09: Windo...
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25
-E SSD [
9
] courtesy of Intel is mounted as /dev/sdd ext4 filesystem with the default options Open MPI [10] v1.5.4 NAS Parallel Benchmarks 3.3.1-MPI [11] Iozone [12] Daemon ...
9
30%
Monitoring your cluster with a home-grown OCF agent
30.11.2025
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2012
»
Issue 07: Xen v...
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under the 18 # following copyright: 19 # 20 # (c) 2002-2005 International Business Machines, Inc. 21 # 2005-2010 Linux-HA contributors
22
# 23 # See usage() function below for more details ... 24 #
25
30%
Develop a simple scanning application with the NAPS2 SDK
27.05.2025
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»
2025
»
Issue 87: Light...
»
ScanOptions 21 {
22
Device = device, 23 PaperSource = PaperSource.Feeder, 24 PageSize = PageSize.
A
4,
25
Dpi = 300 26 }; 27 28 var images = new List
30%
Touring the top Knoppix debugging and rescue tools
30.11.2025
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»
2010
»
Issue 0: Active...
»
23 echo -
n
-e "\rTrying $offset..." 24 if mount -o loop="$LOOP",ro,offset=$offset $DEV $MNT >>mount.log 2>&1 ; then
25
echo -e "\
n
Found a filesystem, now mounted on $MNT" 26 break 27 fi 28
30%
Storage system with OpenSolaris and Comstar
30.11.2025
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»
2010
»
Issue 0: Active...
»
.168.209.200 07 192.168.209.200:3260,1 iqn.1986-03.com.sun:02:8f4cd1fa-b81d-c42b-c008-
a
70649501262 08 # iscsiadm -m node 09 # /etc/init.d/open-iscsi restart 10 # fdisk -l 11 Disk /dev/sdb: 2147
MB
, 2147418112 bytes
30%
Checking password complexity with John the Ripper
30.11.2025
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»
2011
»
Issue 6: Perfor...
»
for checking a password hash file against a password dictionary is very high. A hacker can recover dictionary-based passwords in minutes, whereas a brute force attack can take days. Brute force is a single-character-at-
a
30%
I/O benchmarks with Fio
30.11.2025
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2011
»
Issue 5: Pen Te...
»
] 13 rw=randread 14 runtime=60 15 16 [sequentialread] 17 stonewall 18 rw=read 19 runtime=60 20 21 [randomwrite]
22
stonewall 23 rw=randwrite 24 runtime=60
25
26 [sequentialread] 27 stonewall 28 rw
29%
VMware Server 2.0 on recent Linux distributions
30.11.2025
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2011
»
Issue 3: Are yo...
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/usr/lib/vmware/bin/vmware-hostd |awk '{print $3}'|grep lib | \ 19 xargs rpm --queryformat '%{NAME}\
n
' -qf |sort -u 20 glibc 21 libgcc
22
libstdc++ 23 libxml2 24 nss-softokn-freebl
25
zlib 26
29%
Julia: A new language for technical computing
30.11.2025
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2012
»
Issue 10: Traff...
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julia> limulus limulus limulus limulus
n
2
n
0
n
2
n
0 To get a better feel for parallel computation, I can run the example from the Julia documentation [
9
]. First, see how it works on one node
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