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How to use trackbacks in your blog
Here follows a very well pointer on what blog trackbacks are and how do they work:WordPress Trackback Tutorial
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Eucalyptus Cloud Computing in Ubuntu 9.04
Ubuntu 9.04 Server Edition makes it easy to experiment with cloud computing. Eucalyptus, an open source technology which is included in Ubuntu as a technology preview, enables you to use your own...
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Quick System Backup via Netcat
Sometimes a backup is needed but the server storage is not enough, in this case you must backup your data on the fly via the net, without the facility of storing locally and then transfer the...
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Clear the whole Postfix mail queue
To clear the whole Postfix mail queue you can use this command: ~# for i in `mailq|grep '@' |awk {'print $1'}|grep -v '@'`; do postsuper -d $i ; done Thomas Sewell from coolsewell.com contributed with...
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Quick data pipeline for encryption and decryption
In the need for a quick pipeline to encrypt and decrypt data, gpg can be quite handy, for example it can be used in this way to encrypt some backup before transferring it to a third part hosted...
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Bandwidth: kbps to GB/month conversion
How you know how much will pay for the bandwidth used in a server inside the Cloud?Often cloud services give you a calculator but this is based on Giga Bytes per Month of traffic but normally you...
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WordPress mu random timeouts
I would like to inform the WPMU users about a strange behavior that drove me crazy some days ago.Upgrading from previous versions to the 2.7.1 version, we got strange random errors, some kind of random...
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Vmware 2.0.x build problem
If you get this error during the Vmware module compilation: Unable to make a vsock module that can be loaded in the running kernel:insmod: error inserting ‘/tmp/vmware-config1/vsock.o’: -1 Unknown...
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Debian Lenny locales problem
Recently I bumped in a Debian Lenny locales problem, on some amd64 cluster inside the cloud, during apt-get operations the system complains continuously about wrong or missing locales with messages...
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Debian apt-get errors about gpg key
If during your apt activity you are getting some errors like this: W: GPG error: http://ftp.us.debian.org etch Release: The following signatures couldn’t be verified because the public key is not...
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