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Setup a Local Only SMTP Email Server (Linux, Unix, Mac)

1 - Point localhost.com to your machine

Most of programs will not accept an email using just @localhost as domain. So, edit /etc/hosts file to make the domain localhost.com point to your machine, including this content to the file:

127.0.0.1 localhost.com

2 - Install Postfix

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Tar Usage / Cheat Sheet

Compress a file or directory

e.g: tar -czvf name-of-archive.tar.gz /path/to/directory-or-file

• -c: Create an archive.
• -z: Compress the archive with gzip.
• -v: makes tar talk a lot. Verbose output shows you all the files being archived and much.
• -f: Allows you to specify the filename of the archive.

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# REMEMBER TO USE VISUDO - you can potentially lock yourself out if sudoers file has parse error

# change visudo editor to VIM
Defaults        editor=/usr/bin/vim

# example of /etc/sudoers.d/lbbackup

Cmnd_Alias LS_HARDWARE = /usr/bin/lshw
Cmnd_Alias MOUNT_UDF = /bin/mount -oloop\,rw *
Cmnd_Alias UNMOUNT_UDF = /bin/umount /data/TEMP_UDF_DIR/MOUNT_UDF

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#!/usr/bin/env xdg-open
[Desktop Entry]
Version=1.0
Type=Application
Terminal=false
Icon=mate-panel-launcher
Icon[fr_FR]=mate-panel-launcher
Exec=/usr/bin/eject -t
Name[fr_FR]=ferme-lecteur-optique
Name=ferme-lecteur-optique

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/*************************************************

 * Public Constants

 *************************************************/

#define NOTE_B0  31
#define NOTE_C1  33
#define NOTE_CS1 35
#define NOTE_D1  37

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playload_for_fun_not_an_malware-sensors_temp_input_mean-loop-py3_and_bash.injected.b64encoded.sh

(fucking long title just name of file...)

---

( Overkill b64 injected and encoded/decoded code one-line writing )

echo "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# Create background noise profile from mp3
/usr/bin/sox noise.mp3 -n noiseprof noise.prof

# Remove noise from mp3 using profile
/usr/bin/sox input.mp3 output.mp3 noisered noise.prof 0.21

# Remove silence from mp3
/usr/bin/sox input.mp3 output.mp3 silence -l 1 0.3 5% -1 2.0 5%

# Remove noise and silence in a single command

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#!/bin/bash
#
#
function test_clamav_(){
	TEST_OUT_=$(curl https://secure.eicar.org/eicar.com.txt | clamscan -)
	RESULT_=$(echo $TEST_OUT | grep "stdin : Win.Test.EICAR_HDB-1 FOUND" | wc -l) 

	if [[ "$RESULT_" != "0" ]]; then
		return 1
	else

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apt-get install haveged
nano /etc/default/haveged # Setup DAEMON_ARGS="-w 1024"
update-rc.d haveged defaults
cat /dev/random | rngtest -c 1000 # Testing Availability of Entropy & Quality of Random Data
cat /proc/sys/kernel/random/entropy_avail # To test the amount of available entropy

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#!/usr/bin/python3
#coding: utf-8

import os
import subprocess
from base64 import b64encode as b64enc
from base64 import b64decode as b64dec

def gen_tpl_sub_opt_help_call_cmnd(opt_helper_0=""):