shamil

# how to redirect from one port to another using iptables
###

# install following package in order to preserve the iptables rules
sudo apt-get install iptables-persistent

# redirect from port 80 to port 8000
sudo iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8000

# redirect from one IP to other

shamil

# Show all grants
mysql --skip-column-names -e "SELECT user, host FROM mysql.user" | sed 's/\t/"@"/g; s/^/SHOW GRANTS FOR "/g; s/$/";/g;' | mysql --skip-column-names

shamil

Use folowing steps to repackage dep package:

1: Extract deb package
    # dpkg-deb -x <package.deb> <dir>

2: Extract control-information from a package
    # dpkg-deb -e <package.deb> <dir/DEBIAN>

3. After completed to make changes to the package, repack the deb
    # dpkg-deb -b <dir> <new-package.deb>

shamil

def compile_asset?(path)
  # ignores any filename that begins with '_' (e.g. sass partials)
  # all other css/js/sass/image files are processed
  if File.basename(path) =~ /^[^_].*\.\w+$/
    puts "Compiling: #{path}"
    true
  else
    puts "Ignoring: #{path}"
    false
  end

shamil

Client-side SSL

Create a Certificate Authority root (which represents this server)

Organization & Common Name: Some human identifier for this server CA.

openssl genrsa -out ca.key 2048
openssl req -new -x509 -days 365 -key ca.key -out ca.crt

Create the Client Key and CSR