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/* Getopt for GNU.
   NOTE: getopt is now part of the C library, so if you don't know what
   "Keep this file name-space clean" means, talk to drepper@gnu.org
   before changing it!
   Copyright (C) 1987,88,89,90,91,92,93,94,95,96,98,99,2000,2001
        Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public

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#!/bin/bash

val=$(defaults read com.apple.Finder AppleShowAllFiles)

if [ "$val" == "1" ]; then
	defaults write com.apple.Finder AppleShowAllFiles -string 0
	killall Finder
fi

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

my $numArgs = $#ARGV + 1;

my @types = qw/nat mangle filter/;
if ($numArgs > 0) {@types = @ARGV;}

$SIG{INT} = sub{print "\e[?25h\e[u"; exit}; 

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#!/usr/bin/env bash

# bash script to generate tree structure of a directory
# Pravendra Singh (@hackpravj)

pwd=$(pwd)
find $pwd -print | sed -e "s;$pwd;\.;g;s;[^/]*\/;|__;g;s;__|; |;g"

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X11 server on linux and windows client configuration

Configuration 1

Server X11 on LINUX (without any X related package) (192.168.71.126)

/etc/ssh/sshd_config
#AllowAgentForwarding yes
#AllowTcpForwarding yes
#GatewayPorts no

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#!/usr/bin/env bash

# Will scan a github repo to compute some statistics on PR
# requires curl and bc (presents on most unix like system)


# PARAMETERS ----------------------------
# Github repo to scan
GITHUB_REPO="status-im/status-react"

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# https://stackoverflow.com/a/28776166
sourced=0
if [ -n "$ZSH_EVAL_CONTEXT" ]; then 
  case $ZSH_EVAL_CONTEXT in *:file) sourced=1;; esac
elif [ -n "$KSH_VERSION" ]; then
  [ "$(cd $(dirname -- $0) && pwd -P)/$(basename -- $0)" != "$(cd $(dirname -- ${.sh.file}) && pwd -P)/$(basename -- ${.sh.file})" ] && sourced=1
elif [ -n "$BASH_VERSION" ]; then
  [ "$0" != "$BASH_SOURCE" ] && sourced=1
else # All other shells: examine $0 for known shell binary filenames
  # Detects `sh` and `dash`; add additional shell filenames as needed.

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A note about using gmail as a relay
Gmail by default does not allow email clients that don't use OAUTH 2 for authentication (like Thunderbird or Outlook). 
First you need to enable access to "Less secure apps" on your google settings.


Serveur de courrier entrant (IMAP)	imap.gmail.com

SSL requis : oui
Port : 993

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Copy FOLDER_1 into PATH_B and preserve all attributes

sudo rsync -avihXP --info=progress2 --stats /PATH_A/FOLDER_1/ /PATH_B/


 * use --dry-run to test
 * for encoding char problems between Mac/Linux : https://serverfault.com/questions/638316/rsync-iconv-option-on-mac-not-working-sync-from-remote-linux-server-to-local
 ** rsync initiated from Mac : --iconv=utf-8-mac,utf-8
 ** rsync initiated from Linux : --iconv=utf-8,utf-8-mac

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#https://stackoverflow.com/a/10965292

[ -n "$var" ] && echo "var is set and not empty"
[ -z "$var" ] && echo "var is unset or empty"
[ "${var+x}" = "x" ] && echo "var is set"  # may or may not be empty
[ -n "${var+x}" ] && echo "var is set"  # may or may not be empty
[ -z "${var+x}" ] && echo "var is unset"
[ -z "${var-x}" ] && echo "var is set and empty"