alh13

Generate a key:
openssl genrsa 2048 > <hostname>.key
 
Generate a CSR:
openssl req -new -key <hostname>.key -out <hostname>.csr
 
Generate a self-signed cert:
openssl req -new -x509 -nodes -days 365 -sha1 -key <hostname>.key > <hostname>.crt

alh13

# https://speakerdeck.com/u/jeg2/p/10-things-you-didnt-know-ruby-could-do

RubyVM::InstructionSequence.compile_option = { :tailcall_optimization => true,
                                               :trace_instruction => false }

eval <<end
  def factorial(n, result = 1)
    if n == 1
      result
    else

alh13

git merge --no-commit && git checkout other-branch -- . && git commit
### https://twitter.com/adymitruk/status/69479850846593024
# We needed this once after some intense debugging on the staging branch. We knew
# staging was correct and wanted to merge staging -> production and be sure that
# prod branch never "won" any conflicts

alh13

python -m smtpd -n -c DebuggingServer localhost:1026

alh13

# Here's an idiom to spawn a subprocess and capture its output, without fear of
# being attacked by shell metachars
# (Perl's backtick operator spawns a shell)
sub safeticks {
    my $retval = '';
    my $line;
    my $pid;
  
    die "Can't fork: $!" unless defined($pid = open(KID, "-|"));
    if ($pid) {       # parent