mjf

#! /bin/sh

# kubectl-scaleall - Scale most deployments and stateful sets up or down
# Copyright (C) 2023 Matous Jan Fialka, <https://mjf.cz/>
# Released under the terms of the "MIT" license

PROGRAM="${0##*/}"
VERSION='0.1.4'
LICENSE='MIT'
AUTHORS='2022 Matous Jan Fialka, <https://mjf.cz/>'

mjf

#! /bin/sh

# fstab-uuidify - change /dev to UUID entries in fstab(5)
# Copyright (C) 2023 Matous Jan Fialka, <https://mjf.cz/>
# Released under the terms of the "MIT" license.

# Usage: fstab2uuid /etc/fstab |tee /etc/fstab.new

oprobe=
if [ $UID -eq 0 ]; then

mjf

Security Overview Services (SOS)

Service	Website	Email	DNS	Browser	Connection	Comments (*)
Internet NL	✔	✔	✔	❌	✔	excellent
SSL Labs	✔	✔	❌	✔	❌	reliable
Hardenize	✔	✔	✔	❌	❌	great
Security Headers	✔	❌	❌	❌	❌	perfect
Mail Hardener	❌	✔	❌	❌	❌	valuable
DNS Spy	❌	❌	✔	❌	❌	informative

mjf

$if mode=emacs
    $if term=screen.xterm
        set show-mode-in-prompt on
        set emacs-mode-string \1\eP\e[6\ q\e\\\2
    $endif
$endif

$if mode=vi
    $if term=screen.xterm
        set show-mode-in-prompt on

mjf

set cmd:prompt '\U \S\n$ '
set ftp:port-range 21000-21999
set ftp:sync-mode off
set ssl:verify-certificate on

debug 4

alias ledit 'local edit'
alias lls 'local ls'
alias nocertverify 'set ssl:verify-certificate off'

mjf

#! /usr/sbin/nft -f

# 💀 aka "absolute" firewall for Linux

flush ruleset

table netdev netdev_rules {
    chain netdev_filter_ingress_device_lo {
        type filter hook ingress device lo priority 0
        policy drop

mjf

Czech

• Ochutnejte svět
• Cuketka
• Maškrtnica

mjf

Add Custom Local Parameters for Zimbra Postfix Configuration

We will add two custom local parameters:

• sender_bcc_maps
• recipient_bcc_maps

so that we could define our own per-user Bcc: forwarding for all users in a domain (also see this Gist to know more generally about how to configure it for Postfix).

mjf

Enable BCC Forwarding For All Domain Users

# /etc/postfix/main.cf
sender_bcc_maps    = pcre:/etc/postfix/domain_users_bcc_maps
recipient_bcc_maps = pcre:/etc/postfix/domain_users_bcc_maps

# /etc/postfix/domain_users_bcc_maps

mjf

Online rename interface with Systemd Networkd

1. create .link file in for the interface to rename it to a name of choice:

   [Match]
   OriginalName=*
   MACAddress=<mac-address>
   

[Link]