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O script é bem simples, faz um dump em um arquivo SQL, compacta e apaga o SQL (deixando só o arquivo compactado). Para ficar mais divertido, mandei ele apagar os backups antigos (mantém só os 10 últimos (exagero!)) e mandar e-mails avisando o status do backup. Ele manda e-mails sempre, mas pelo código você vai ver como é simples mandar e-mails só em caso de erros. No início achei interessante mandar e-mails sempre para confirmar que o backup está funcionando legal.

Depois coloquei na cron do Linux (Ubuntu) para executar todos os dias às 2h da manhã (que você pode configurar de acordo com sua necessidade).

Segue abaixo:

#!/bin/bash
U_PASTA="/home/user/backup" # < -- substitua pelo caminho onde vai salvar o backup
U_DATA=$(/bin/date +%Y%m%d%H%M%S)
U_CAMINHO="backup-$U_DATA.sql"
U_CAMINHOTAR="backup-$U_DATA.tar.gz"
U_HOST="localhost"
U_USER="root"
U_PASSWORD="********"
U_DATABASE="minha_base_mysql"
U_EMAIL="meuemail@meudominio.com.br"
#
erro=""
#
cd $U_PASTA
#
#
# Faz o backup do MySQL
#
mysqldump -h $U_HOST -u $U_USER -p$U_PASSWORD $U_DATABASE > $U_CAMINHO
if [ $? -ne 0 ]
then
    erro="Erro na geracao do SQL"
fi
#
#
# Compacta o arquivo
#
if [ "$erro" == "" ]
then
    tar zcvf $U_CAMINHOTAR $U_CAMINHO
    if [ $? -ne 0 ]
    then
        erro="Erro ao compactar o SQL"
    fi
fi
#
#
# Remove o arquivo sql que nao sera mais usado
#
if [ "$erro" == "" ]
then
    rm -f $U_CAMINHO
    if [ $? -ne 0 ]
    then
        erro="Erro ao apagar arquivo SQL temporario"
    fi
fi
#
#
# Apaga arquivos antigos e mantem apenas os 'n' ultimos
#
n=10
c=0
for i in *.tar.gz
do
    let c=$c+1
done
if [ $c -gt $n ]
then
    for i in *.tar.gz
    do
        if [ $c -le $n ]
        then
            break
        fi
        rm $i
        let c=$c-1
    done
fi
#
if [ "$erro" == "" ]
then
    erro="Backup efetuado com sucesso!"
    subject="[Sucesso]"
else
    subject="[Erro]"
fi
echo "$erro => $U_CAMINHOTAR" | mail -s "$subject Backup em $(/bin/date +'%d/%m/%Y %H:%M:%S')" $U_EMAIL
#
# Volta para a pasta anterior
cd -

Para agendar a execução, digite:

$ crontab -e

Vai abrir um editor de texto com o arquivo de configuração da cron. Daí você pode digitar algo como:

# m h  dom mon dow   command
00 02 * * * /home/user/backup_bd.sh

Onde backup_bd.sh é o arquivo do script que passei acima.

É isso. Espero que seja útil.

PS: Modifiquei algumas coisas na hora de publicar para não expor minha base, daí espero que não tenha cometido nenhum erro.

Outro PS: O script é meio amador, mas funciona legal. A base que faço backup gera um arquivo sql de 117Mb, compactado cai para 18Mb, e tudo isso em cerca de 15 segundos…

via: Andre Noel

Howto run a script when a USB device IS Pluged

Filipe Teixeira — Tue, 12 May 2009 08:23:22 +0000

howto run a script when a USB device is pluged in

This explains how you could run a script made by you (say /usr/local/my_script) when you plug a specific USB device.

1. First run lsusb to identify your device. Example:
$lsusb
Bus 004 Device 001: ID 0000:0000
Bus 003 Device 001: ID 040a:0576 Kodak Co.
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 001: ID 0000:0000

2. After doing this you know that
- the vendor ID of your device is 040a
- the product ID of your device is 0576

3. Now is time to create your UDEV rule:

Code:

sudo nano /etc/udev/rules.d/85-my_rule.rules

4. And add the text

Code:

ACTION=="add", SUBSYSTEM=="usb_device", SYSFS{idVendor}=="040a", SYSFS{idProduct}=="0576", RUN+="/usr/local/my_script"

Explanation:
When the usb_device product identified as 0576 of vendor 040a is added, run /usr/local/my_script
Note that ‘==’ and “!=” are comparators, while = and += are assingments

via : ubuntuforums

jCarousel

Filipe Teixeira — Fri, 24 Apr 2009 09:00:19 +0000

Riding carousels with jQuery

Author: Jan Sorgalla
Version: 0.2.3 (Changelog)
Download: jcarousel.tar.gz or jcarousel.zip
Licence: MIT and GPL
Documentation: http://sorgalla.com/projects/jcarousel/

jCarousel is a jQuery plugin for controlling a list of items in horizontal or vertical order. The items, which can be static HTML content or loaded with (or without) AJAX, can be scrolled back and forth (with or without animation).

Examples

The following examples illustrate the possibilities of jCarousel:

download ubuntu jaunty jackalope 9.04

Filipe Teixeira — Thu, 23 Apr 2009 13:35:17 +0000

Hoje saiu a nova versão do ubuntu jackalope 9.04 , já actualizei as minhas versões do ubuntu até agora correu tudo bem.

Para conseguirem a ultima versão do ubuntu gratuita e legal sigam este link :

http://www.ubuntu.com/getubuntu/download

http://darkstar.ist.utl.pt/ubuntu/releases/9.04/

Novidades:

“

1) Gnome 2.26 desktop environment, which includes the following new features:

a) brasero, an all-in-one CD burning application.
b) Improved multi-monitor handling.

2) X.Org server 1.6, which supports several new video cards, as well as ATI-specific performance improvements including EXA acceleration by default, 2D support for R6xx/R7xx, 3D support for R5xx cards, along with an updated -fglrx proprietary driver for R6xx/R7xx 3D support.

3) New notification style and preferences.
4) Boot performance is “significantly improved”.
5) Linux kernel 2.6.28-11.37, which is based on 2.6.28.8.
6) Ext4 file system support.

7) Server edition includes support for cloud computing via Eucalyptus, an open source technology which is included in Ubuntu as a technology preview, enables you to use your own servers to deploy, experiment and test your own private cloud that matches the Amazon EC2 API.

Turn-key mail servers with the dovecot-postfix package, which supports SMTP, POP3 and IMAP with TLS and SASL. ”

Backup MySQL em servidor remoto

Filipe Teixeira — Thu, 23 Apr 2009 09:44:54 +0000

Backup entre dois servidores [Local] e [Remote].

mysqldump -u USERNAME -pPASSWORD nome-da-db >/home/mysqlbak/mysqldump.sql
rsync -avz /home/mysqlbak/mysqldump.sql username@ip-do-servidor-remoto:/home/mysqlbak/mysqldump.sql

Podem ler mais neste post: http://www.webkaput.com/backup-em-servidor-remoto/

Oracle compra Sun

Filipe Teixeira — Wed, 22 Apr 2009 15:24:24 +0000

O negócio entre a Sun e a Oracle acaba de ser anunciado e analistas começam a discutir qual será o futuro do MySQL, base de dados.

Como exemplo nada melhor que este comando sql.

BEGIN;
INSERT INTO oracle (SELECT interesting_stuff FROM sun WHERE likely_to_make_money = 1);
DROP sun; COMMIT; http://ginx.com/-50VNH

Eight Great Ways to Share Slides Online

Filipe Teixeira — Mon, 20 Apr 2009 16:07:26 +0000

Begin with a PowerPoint:

1. SlideShare is probably the best known and most used presentation-sharing platform. LOTS of presentations to view, and options for posting your own either publicly or privately. There are easy connections to LinkedIn and Facebook. SlideShare accepts PowerPoint, Open Office and Keynote presentations, but does not preserve animation, transitions, or narration, and does not support embedded audio or video.

2. SlideBoom converts PowerPoint to Flash, and will preserve movement and sound. The site offers search-and-share capabilities similar to SlideShare, along with a Blog Sidebar Widget and a free PowerPoint add-in (iSpring) that enables you to convert a presentation to Flash in PowerPoint. A basic SlideBoom account is free, and there is also a Pro account that includes more storage and added features for $99 a year. SlideBoom also offers sophisticated business solutions.

3. SlideServe is very similar to the basic version of SlideBoom.

4. Scribd is quite different from the first three platforms listed. It’s a very popular (50 million viewers a month) document publishing site that enables users to upload all sorts of file formats—including PowerPoint presentations–for conversion to iPaper, a beautiful online reading format. Scribd also provides sophisticated community and search tools, plus an iPaper viewer that can be embedded on your own website. Scribd does not support any transitions, animation or embedded media in presentations.

Can begin without a PowerPoint:

5. 208 Slides is something of a hybrid, and the main goal seems to be simplicity. It lets you create and share slides via its online application–which is pretty basic–or you can upload a PowerPoint presentation and then enhance it, using a streamlined interface and tools that let you gather media easily. Then you can send the finished presentation to SlideShare, or download it to PowerPoint. No transitions or animation.

6. SlideRocket is intended as a replacement, not an accompaniment, for PowerPoint. It offers a fully functional presentation development application, with stunning 3-D transition effects. Although you can store and share presentations via Slide Rocket, there is no social platform—the focus is on creation. The basic account is free, with additional account levels (that include extra features like web meetings and presentation analytics) available at $10 and $20 per month.

7. Slide doesn’t create conventional slideshows at all, and has nothing to do with PowerPoint. It lets you create a “show” containing images (which you upload or select from a social media site), then apply an effect (such as rotating the images, collaging them, melting them, etc.) and optionally add audio from Slide’s music library. The images then play in the slide space, which is inside a “skin” that can be customized (for example, the images can play on a drive-in movie screen). Finally, you post the show on one or more social media accounts, or get the code and embed it on your own site, or email it. Slide defines itself as a “social entertainment application.”

8. Zoho Show is part of the Zoho suite, which provides a long list of online alternatives to desktop applications (Zoho Write, Zoho Sheet, Zoho Project, and so on). Show can start with a PowerPoint presentation, but provides a nice toolset for creating slides directly, including some attractive themes. It replicates much PowerPoint functionality, but transitions and animation are not yet available. Zoho makes it easy to export (to HTML, PDF, PPT, etc.), publish, and share presentations.

fonte:tutorialblog.org