MarcelFox

# flush iptable rules
iptables -F
iptables -t nat -F
iptables -t nat -X
iptables -t mangle -F
iptables -t mangle -X

# Allowing DNS lookups (tcp, udp port 53)
iptables -A OUTPUT -p tcp --dport 53 -m state --state NEW,ESTABLISHED -j ACCEPT
iptables -A INPUT  -p tcp --dport 53 -m state --state NEW,ESTABLISHED -j ACCEPT

MarcelFox

Postfix Installer

Following script may be used for configuring complete and secure email server on fresh install of Debian 9. It will probably work on other distributions using apt-get. After minor changes you'll be able to use it on other Linux distros.

What it does?

02_postfix.sh:

• Install Postfix and configure it with TLS support.
• Install Dovecot and configure it's transport on Postfix.
• Download, extract and correct permissions for Postfixadmin.
• Download, extract and correct permissions for Roundcube.

MarcelFox

awk -F\' '$1=="menuentry " || $1=="submenu " {print i++ " : " $2}; /\tmenuentry / {print "\t" i-1">"j++ " : " $2};' /boot/grub/grub.cfg

MarcelFox

;; inhibit-startup-echo-area-message MUST be set to a hardcoded 
;; string of your login name

;; Disable slash screen:
(setq inhibit-splash-screen t)

;; Set global text-mode and activate auto-fill:
(setq-default major-mode 'text-mode)
(setq-default auto-fill-function 'do-auto-fill)

MarcelFox

function agenda() {
    DIR_PATH="$HOME/.agenda"
    if [ ! -d $DIR_PATH ]; then
        mkdir $DIR_PATH
    fi

    if [ -z "$1" ]
    then
        if [ ! -f "$DIR_PATH/agenda.txt" ];
          then

MarcelFox

clear_branches() {
    GIT_DIR=".git"
    BRANCH_EXIST=$(git branch | awk '!/\*/ && !/main/ && !/development/ && !/staging/ && !/develop/ && !/master/')

    if [[ ! -d "$GIT_DIR" ]];
      then
        echo "directory $GIT_DIR not found"
        return
    fi;