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49%
Give your servers the once over with Nmap
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© 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
49%
A standard cloud computing API
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
few years, including Amazon Elastic Compute Cloud (EC2), Amazon Simple Storage Service (S3), and JiffyBox. In the US, these vendors are joined by providers such as GoGrid, Rackspace, and Terremark
49%
Creating and evaluating kernel crash dumps
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Giuseppe Ramos, 123RF.com
kernel sles:~ # grep crash /proc/cmdline root=/dev/disk/by-uuid/10a83ffe-5a9f-48a2-b8cb-551c2cc6b42d resume=/dev/sda3 splash=silent text showopts crashkernel=128 sles:~ # /etc/init.d/boot.kdump status
49%
Mandatory access control with Tomoyo Linux
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© 3drenderings, 123RF.com
compared with version 1.x are noticeable in Tomoyo versions 2.2.x and 2.3.x; the current version 2.5 only lacks a couple of features. Unfortunately, version 2.5 is only available in Linux kernel 3.2, which ... 9
49%
Archiving email and documents for small businesses
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
© Pavlenko Evgenly, fotolia.com
} 20 \usepackage{ngerman} 21 \usepackage[official,right]{eurosym} 22 \\\begin{document}" > att1.tex 23 echo "\end{document}" > att3.tex 24 25 # Merge Latex file components 26 27 cat att1.tex searchkey
49%
Expand your sphere with a piece of Google
30.11.2025
Home »  Archive  »  2011  »  Issue 4: Secure...  » 
© artida, 123RF.com
or newer. Python programmers need to use version 2.5; the SDK and the environment on the Google servers do not support the current Python 3.0. The SDK for Go exists at the moment only for Linux and Mac OS X
49%
Getting started with I/O profiling
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
© Photosani, Fotolia.com
2 2 3 512KB < < 1MB 3 2 2 3 2 4 3 4 1MB < < 10MB 87 87 87 84 74 67
49%
Netcat – The admin's best friend
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Dmitry Rukhlenko, 123RF.com
to open this file in your web browser. Some browsers need the length of the file specified, so you could also try: { echo -ne U "HTTP/1.0 200 OK\r\nContent-Length: \ $(wc -c n\r\n
49%
The fine art of allocating memory
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
); i+= 4096) newblock[i] = 'Y'; 12 printf("Allocated %d MB\n", allocation); 13 } 14 } Things are more interesting when memory is being used. Uncommenting line 11 does just that. The OOM
49%
Tuning loops – from loop unrolling to Duff's device
28.07.2025
Home »  Archive  »  2025  »  Issue 88: 5 Net...  » 
[i] + b[i]; } When the number of cycles is known at compile time, a loop can be fully unrolled: c[0] = a[0] + b[0]; c[1] = a[1] + b[1]; c[2] = a[2] + b[2]; c[3] = a[3] + b[3]; However, it remains

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