cosimo

#!/usr/bin/env perl

=head1 NAME

quick-stats.pl - Calculate the basic statistical attributes of a list of numbers

=head1 SYNOPSIS

    echo <list of numbers> | ./quick-stats.pl

cosimo

#!/usr/bin/env perl

=head1 NAME

map-size.pl - Shows process memory segment sizes

=head1 SYNOPSIS

    cat /proc/[pid]/maps | ./map-size.pl

cosimo

#!/bin/bash

INFILE="$1"
OUTFILE="$2"

which ffmpeg > /dev/null || {
    echo "You need ffmpeg to convert audio files to Alexa MP3 format"
    exit 1
}

cosimo

Traffic between websocket client and cometd server

IN      1552060842.6432996      [{"id":1,"channel":"/meta/handshake","supportedConnectionTypes":["websocket"],"version":"1.0","ext":{"ack":true,"timesync":{"tc":1552060842643}}}]
OUT     1552060842.6573672      [{"minimumVersion":"1.0","clientId":"21goxg4y4lnjv5pd5ws3lvpj2o","supportedConnectionTypes":["websocket","long-polling","callback-polling"],"advice":{"interval":0,"timeout":30000,"reconnect":"retry"},"channel":"/meta/handshake","id":"1","version":"1.0","successful":true}]

IN      1552060843.1454756      [{"id":2,"channel":"/meta/connect","connectionType":"websocket","ext":{"ack":1,"timesync":{"tc":1552060843145}},"clientId":"21goxg4y4lnjv5pd5ws3lvpj2o"}]
OUT     1552060843.1552584      [{"channel":"/meta/connect","id":"2","successful":true}]

cosimo

[main] INFO org.eclipse.jetty.util.log - Logging initialized @107ms to org.eclipse.jetty.util.log.Slf4jLog
[main] INFO org.eclipse.jetty.server.Server - jetty-9.4.z-SNAPSHOT; built: 2019-02-15T16:53:49.381Z; git: eb70b240169fcf1abbd86af36482d1c49826fa0b; jvm 10.0.2+13-Ubuntu-1ubuntu0.18.04.4
[main] INFO org.eclipse.jetty.server.handler.ContextHandler - Started o.e.j.s.ServletContextHandler@53976f5c{/,null,AVAILABLE}
[main] INFO org.eclipse.jetty.server.AbstractConnector - Started ServerConnector@25f8524{HTTP/1.1,[http/1.1]}{0.0.0.0:8008}
[main] INFO org.eclipse.jetty.server.Server - Started @309ms
Server@2ef3eef9{STARTED}[9.4.z-SNAPSHOT] - STARTED
+= QueuedThreadPool[qtp1413653265]@5442a311{STARTED,10<=10<=100,i=5,q=0}[ReservedThreadExecutor@47987356{s=0/8,p=0}] - STARTED
|  += ReservedThreadExecutor@47987356{s=0/8,p=0} - STARTED
|  +> threads size=10
|     +> 21 qtp1413653265-21 IDLE TIMED_WAITING @ java.base@10.0.2/jdk.internal.misc.Unsafe.park(Native Method)

cosimo

#!/usr/bin/python3.7

import aiohttp
from aiohttp import web, WSCloseCode
import asyncio


async def http_handler(request):
    return web.Response(text='Hello, world')

cosimo

vcl 4.0;
import std;
import vsthrottle;

sub vcl_recv {
    ...
    call rate_limit;
    ...
}

cosimo

#
# Varnish appends ${localhost} (= 127.0.0.1) to the XFF header
# automatically and transparently *before* calling vcl_recv().
#
# Not a problem for the Rest backend, but in the interest of
# trying to be as transparent as possible, we have the option
# to clean it out.
#
sub clean_x_forwarded_for {
    if (req.http.X-Forwarded-For != "") {

cosimo

#!/bin/bash
#
# Fix broken mysql meta tables.
#
# For some reason, `innodb_*_stats' tables seem to be corrupted (not existing
# when being queried from mysql shell, but physical files do exist).
# `slave_worker', `slave_relay_log_info' and `slave_master_info' tables
# seem to have the same problem, which `mysql_install_db' will happily fix.
#
# This script performs the necessary steps to have that done.

cosimo

$ cat /etc/apt/preferences.d/puppet
Explanation: Need passenger to run Puppetmaster
Package: puppetmaster-common puppetmaster puppet puppet-common facter puppetmaster-passenger
Pin: release o=Debian
Pin-Priority: 999