Monthly Archives: November 2011

C character arrays (K&R exercice 1-17)

Posted on November 28, 2011 by danmassey99

Back on the K&R book, still working through the ‘Tutorial Introduction’ and in the character array section. Here is my solution to Exercise 1-17: print out all lines with 80 or more characters. #include <stdio.h> #define MAXLINE 1000 // This … Continue reading →

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Starting C for Perl coders

Posted on November 26, 2011 by danmassey99

In my quest to write an ‘app’ for the iPhone, I’ve been sidetracked into learning ANSI-C from scratch to give me a grounding for C++ and Objective-C. Why you may ask? Well it occurred to me that as FreeBSD in … Continue reading →

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C Arrays

Posted on November 26, 2011 by danmassey99

Here are some C programs from the K&R book with reference to arrays. This resonated with the Perl hashes as this task is nearly always done with a hash, but as C has no hashes, here we go with an … Continue reading →

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Objective-C decisions vs Perl descisions

Posted on November 13, 2011 by danmassey99

I’m comparing Objective-C decision making with our beloved Perl decision making. Objective-C supports the if, else, else if & switch. Lets write some Objective-C code and write the Perl in parallel. #import <Foundation/Foundation.h> int main (int argc, const char * … Continue reading →

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Objective-C loops

Posted on November 12, 2011 by danmassey99

After finding another hour to read some more ‘Objective-C’ instruction, I’ve covered some looping techniques which are all again valid in Perl and ANSI C. My text covers the for, while and do loops, and heres the sample program… #import … Continue reading →

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FreeBSD ZFS Deduplication

Posted on November 11, 2011 by danmassey99

Time to prove or disprove the ZFS dedup capabilities. First its important to understand that as with compression, if we change the settings on the storage block then only new data written to that area will be de-duped or compressed. … Continue reading →

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Quick MySQL backups

Posted on November 10, 2011 by danmassey99

As a hosting provider we are often asked to provide a backup or dump of a mysql database. The easiest way to do it is to performa MySQLdump into a file into the webspace and the secure it with file … Continue reading →

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FreeBSD ZFS – Connecting an existing zpool to a new OS

Posted on November 9, 2011 by danmassey99

Imagine that you have your server with an external RAID array running a ZFS file system, or even a separate internal array on the box and the OS array is trashed. Now you have your nice redundant ZFS partition, but … Continue reading →

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ModSecure – exempting a domain

Posted on November 9, 2011 by danmassey99

Having installed modSecure2 onto a few web servers, it seems that, even with the base_rules do not get on well with Actinic software. Our options were to start removing rules from within the base_rules set or simply exclude the domain … Continue reading →

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FreeBSD Jails with EZJail

Posted on November 5, 2011 by danmassey99

The last post was a success in that a jail was created and everything worked fine and as expected. However, before I go charging off to the server store and configuring my production server, I’m going to do a bit … Continue reading →

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