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# Download the legacy format for NGINX compatibility
wget http://geolite.maxmind.com/download/geoip/database/GeoLiteCountry/GeoIP.dat.gz
wget http://geolite.maxmind.com/download/geoip/database/GeoLiteCity.dat.gz
# Unzip
gunzip Geo*.gz
# Copy to /usr/share/GeoIP/
cp Geo*.dat /usr/share/GeoIP/

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# Install necessary packages
sudo apt-get unzip
sudo apt-get install libtext-csv-xs-perl
# Create database location
sudo mkdir /usr/share/xt_geoip
# Download the database file and convert
/usr/lib/xtables-addons/xt_geoip_dl
sudo /usr/lib/xtables-addons/xt_geoip_build -D /usr/share/xt_geoip *.csv

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Install Homebrew

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"

Install Oh My ZSH!

sh -c "$(curl -fsSL https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"

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Google OAuth for Service Accounts/Firebase REST How-to

Firebase REST queries require access_token parameter for full access. This is Google’s OAuth 2.0 for service accounts.

• https://firebase.google.com/docs/reference/rest/database/user-auth
• https://developers.google.com/identity/protocols/OAuth2ServiceAccount

Get credentials of the service account

• Firebase Console > Settings > Project settings > Service accounts tab

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# Configure logger
NekoLogger.logger = Logger.new($stdout, formatter: proc { |s, d, n, m| "#{s} : #{m}\n" })
L = NekoLogger.logger
lvl = ENV['NEKO_LOG_LEVEL']
if String === lvl && ['DEBUG', 'INFO', 'WARN', 'ERROR'].include?(lvl.upcase)
  L.level = eval("Logger::#{lvl.upcase}")
end


#

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# This example will make Adobe Source Code Pro font look snug in TextMate.

# Adjust space above the line
defaults write com.macromates.TextMate.preview fontAscentDelta -float -2

# Adjust space below the line
defaults write com.macromates.TextMate.preview fontLeadingDelta -float 0

# Reset to default
defaults delete com.macromates.TextMate.preview fontAscentDelta

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# Generate private key with passphrase
openssl genrsa -des3 -out server.key 2048

# Private key without passpharase; UNDERSTAND THE RISK!
openssl rsa -in server.key -out server.key-nopass

# Generate CSR to submit to CA
openssl req -new -sha256 -key server.key -out server.csr

# Check/view CSR

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# Generate the now preferred Ed25519 key
ssh-keygen -t ed25519

# Search in known_hosts file
ssh-keygen -F "hostname"

# Remove key(s) from known_hosts file
ssh-keygen -R "hostname"

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# Save this at ~/.ssh/config
Host nickname
    Hostname 192.168.0.123
    User nick
    Port 2222
    IdentityFile ~/.ssh/id_nick
    Compression yes

Host *
    Compression no

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begin
  # do something bad
rescue => e # StandardError by default
  puts "Exception class: #{ e.class.name }"
  puts "Exception message: #{ e.message }"
  puts "Exception backtrace: #{ e.backtrace }"
  # Or just: puts "#{e}"
end