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 data.

There are many methods to backup your data on the fly, using rsync via ssh is one for example, but this post is about using netcat for a quick solution.

Listening side, where the backup data will be stored, or destination:

Sending side, where the original data are, or source:

Don't forget to create: /bin /media /mnt /opt /proc /selinux /srv /sys /tmp
and chmod 1777 /tmp
(This FHS is for a Debian Etch, please take care of different directories in your setup)

> Hello Fabio,
>

export COLUMNS=150

I was reading some articles around the web about how building your persistent GNU/Linux system on usb stick, I found many howtos but I had problems with my BIOS.

It seems that certain versions of Award BIOS, one of the major BIOS vendor, are Buggy and misbehave with syslinux, to fix this you should give a USB-ZIP drive compatible geometry to the USB Stick. I found this useful info into the documentation inside the syslinux tarball (doc/usbkey.doc).

Thomas Sewell from coolsewell.com contributed with this helpful notes:

If you need to edit a big file, for example a mysql full dump for recover a single database, and your editor, for example emacs, say
something like "Maximum buffer size exceeded" you can split it in many smaller files.

Output files will be:

OUTPUT_FILE_NAMEaa
OUTPUT_FILE_NAMEab
OUTPUT_FILE_NAMEac

and on ... every one 100MB weight.

Then you can edit and just keep your DB for restore.

http://www-128.ibm.com/developerworks/ibm/osource/index.html

The site is online with the new 4.7 Drupal version :)

How do you rename files with a certain pattern in bash?

Thanks Live from Yokohama

Create qemu virtual image file:

On my laptop for some reasons, no cdrom boot was allowed for the virtual installation,
so the loopback device comes useful to do the installation:

Now boot the new OS installation (I use Debian GNU/Linux for both real and virtual systems)

Then boot the new system (root or sudoed, as you need root privileges for routing)

Ant writes "Paul Boutin's Slate article explains the factors contributing to the success YouTube and MySpace: they are easy to use (usability), and they don't 'tell you what to do.'" From the article: "Both YouTube and MySpace fit the textbook definition of Web 2.0, that hypothetical next-generation Internet where people contribute as easily as they consume.

(from http://wiki.splitbrain.org/shellsnippets)

Put the following little snippet in your .bashrc/.bash_profile and you'll have a handy little calculator:

Use like this:

bash$ ? 2*2
4

Thanks textsnippets.com

from:

How to list duplicate lines in a text file, with counts next to each unique line - [spugbrap's random notes geek blog] [del.icio.us (bash)]

At some point, last year (it's been in my 'toblog' file all this time), I needed to analyze the lines in a text file, removing duplicate lines, while counting how many times each duplicated line occurred within the file, and sorting from most common to least common.

Generate an infinite loop in the shell