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: Last three months
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Article (Print)
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84%
Give your servers the once over with Nmap
31.10.2025
Home
»
Archive
»
2012
»
Issue 11: Cloud...
»
.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
82%
Enterprise communication with IRC
30.11.2025
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»
Archive
»
2012
»
Issue 10: Traff...
»
. For other distros, the Ratbox source files are available at the project website [
3
]. After unzipping, you can install with the classic three-command trick of configure, make, and make install. That Ratbox ... Running an IRC server might seem almost anachronistic, but the classic service from the early 1990
s
offers a huge amount of functionality with very little in the line of resources. In the daily grind
82%
An IT nomad's daily diary
30.11.2025
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»
Archive
»
2011
»
Issue 6: Perfor...
»
\ 02 --hostname=foo.bar.de --mac- address=
00
:40:26:CA:10:DD \ 03 --kopts="stage=test app=www" --ksmeta="stage=test app=www" 04 # cobbler system edit --name=foo --interface=eth
0
--mac=
00
:40:26:CA
82%
Beyond monitoring: Mathematical load simulation in Perl
30.11.2025
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»
Archive
»
2011
»
Issue 6: Perfor...
»
Model"; 11 $work = "ebiz-tx"; 12 $node1 = "WebServer"; 13 $node2 = "AppServer"; 14 $node
3
= "DBMServer"; 15 $think =
0.0
* 1e-
3
; # as per test system 16 $dtime =
2.2
* 1e-
3
; # dummy service time 17 18
80%
Maatkit tools for database administrators
30.11.2025
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»
Archive
»
2010
»
Issue 2: Backup...
»
of the stress test shown in Figure 2, shows that some 19,200 queries composed of 55 different commands were issued. The system, a server with 768
MB
of RAM and a Pentium
3
CPU, took a total of
22
seconds to answer
80%
Reading and understanding database execution plans
31.10.2025
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»
Archive
»
2012
»
Issue 12: NAS S...
»
"."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
79%
Touring the top Knoppix debugging and rescue tools
30.11.2025
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»
Archive
»
2010
»
Issue 0: Active...
»
: 1487680
0
IO-APIC-fasteoi uhci_hcd:usb
3
14
22
: 22998855
0
IO-APIC-fasteoi psb@pci:0000:
00:02.0
15 23: 3084145
0
IO-APIC-fasteoi hda_intel 16 24: 1
0
...
0
78%
Managing virtual machines
30.11.2025
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»
Archive
»
2012
»
Issue 09: Windo...
»
/sysconfig/network-scripts/ifcfg-eth
0
-e "
s
/
/
/" You need a similar approach with the Udev rules mentioned earlier. In this way, you can also replace the hostname so that it matches the name assigned during
78%
Debugging the Linux kernel with the Qemu emulator
30.11.2025
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»
Archive
»
2012
»
Issue 07: Xen v...
»
:add-symbol-file module.ko text_address -
s
.data data_address -
s
.bss bss_address 9. Debug: Set breakpoints and so on. In Toolchain , enable the Build gdb for the Host option; in Kernel | Kernel version , type
3
77%
I/O benchmarks with Fio
30.11.2025
Home
»
Archive
»
2011
»
Issue 5: Pen Te...
»
/
0
K /
s
] [4137 /
0
iops] [eta
00
m:06
s
] In the example, the first job is performing a sequential read, marked as r in square brackets, while Fio hasn't initialized the second job, marked as P
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