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# Query Google Cache
http://webcache.googleusercontent.com/search?q=cache:<your url without "http://">

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# PIP
# install package
pip install package
# install from git repository
pip install git+git://github.com/gvalkov/tailon.git

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# Install tailon
pip install tailon
# start tailon
tailon -f /var/log/apache2/{access,error}.log
tailon -f /var/log/apache2/{access,error}.log -b 127.0.0.1:8080 -d

# SECURE INSTALLATION

# Create a domain or subdomain like tailon.mydomain.com
# Create an apache virtual host

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[DEFAULT]
ignoreip = 127.0.0.1/8 YOUR_IP
banaction = ufw
bantime = 1800
destemail = your.name@mail.com
sendername = Fail2Ban
action = %(action_mwl)s

[sshd]
enabled = true

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scrapyd start <crawler>

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# Export first database
mysqldump --skip-comments --skip-extended-insert -u root -p database_1>file1.sql
# Export second database
mysqldump --skip-comments --skip-extended-insert -u root -p database_2>file2.sql
# Display differences between files
diff file1.sql file2.sql
# Ressource
http://www.mysqldiff.org/

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# PHP mail change FROM (when auto set as www-data by web server)
mail([to], [subject], [message], [headers], "-f hugo@maugey.fr -F Hugo Maugey");

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# Update you packages
sudo apt-get update
# Install a compiler
sudo apt-get install build-essential
# Install tcl
sudo apt-get install tcl8.5
# Download Redis
wget http://download.redis.io/releases/redis-stable.tar.gz
# Uncompress archive
tar xzf redis-stable.tar.gz

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# See all opened ports
netstat -ntlp | grep LISTEN
#
netstat - anp
#
netstat -tulpen
# Show uwf status
sudo ufw status verbose
# Open a port
sudo ufw allow 80/tcp

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# List cron tasks for user www-data
sudo crontab -u www-data -l
# Edit cron tasks for user www-data
sudo crontab -u www-data -e

# Backup current user crontab
crontab -l > cron-backup.txt
# Restore current user crontab
crontab cron-backup.txt