eqhmcow

#!/usr/bin/perl
# example perl code, but this should now actually work properly, even on
# Windows

# thanks to everyone who tested this, reported bugs and suggested or
# implemented fixes!

# this code is licensed under GPL 2 and/or Artistic license;
# aka free perl software

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IPTABLES=iptables
IPV=${IPTABLES%tables} # ip for ipv4 | ip6 for ipv6
PROC_IPTABLES_NAMES=/proc/net/${IPV}_tables_names

/sbin/modprobe --version 2>&1 | grep -q module-init-tools \
    && NEW_MODUTILS=1 \
    || NEW_MODUTILS=0

# Do not stop if iptables module is not loaded.
[ -e "$PROC_IPTABLES_NAMES" ] || exit 1

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#!/bin/bash

# As the "bufferbloat" folks have recently re-discovered and/or more widely
# publicized, congestion avoidance algorithms (such as those found in TCP) do
# a great job of allowing network endpoints to negotiate transfer rates that
# maximize a link's bandwidth usage without unduly penalizing any particular
# stream. This allows bulk transfer streams to use the maximum available
# bandwidth without affecting the latency of non-bulk (e.g. interactive)
# streams.

eqhmcow

Big Data on Little Linux

eqhmcow

#!/usr/bin/perl
use strict;
use warnings;

$|++;

use IPC::Run qw/start pump finish timeout/;
use Parallel::ForkManager;
use Getopt::Long;

eqhmcow

#!/usr/bin/env perl
use strict;
use warnings;

# apt-get install apache2-utils libyaml-syck-perl libtimedate-perl
use YAML::Syck;
use IO::File;
use Date::Parse;
use Time::Piece;

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# remove IP / set IP to one that won't be used for other systems

# clear ssh host key
rm -rf /etc/ssh/ssh_host_*

# remove /etc/hosts entries as applicable

# remove utmp data - wtmp and btmp and lastlog
rm /var/log/{w,b}tmp /var/log/lastlog ; 
  touch /var/log/{w,b}tmp /var/log/lastlog ; 

eqhmcow

use strict;
use warnings;
my @n;
while (<>) {
  push @n, $_;
}

my $first_num = 0;
my $next_num = 0;
my $contig = 0;

eqhmcow

slightly-less-insecure-docker
wrapper around docker that perhaps makes it slightly less insecure

example usage:

DOCKER=/path/to/docker-wrapper
sudo $DOCKER run -it -v /etc/passwd:/etc/passwd -v /tmp:/tmp ubuntu


NOTE:

eqhmcow

How to run "ls" in docker

---

Run "ls" in docker, handling various possible environmental issues that the shell normally directly handles.

That is, the below docker command is similar to simply issuing "ls" at a shell prompt, or adding an "ls" command to a shell script.

Without docker: