fcenobi

wget -c "https://boot.netboot.xyz/ipxe/netboot.xyz.lkrn" -O /boot/netboot.xyz.lkrn && \
cat > /etc/grub.d/40_custom <<EOF
#!/bin/sh
exec tail -n +3 \$0
menuentry 'netboot.xyz' {
    set root='hd0,msdos1'
linux16 /netboot.xyz.lkrn
}
EOF
update-grub

fcenobi

$smtp = New-Object System.Net.Mail.SmtpClient  
$smtp.Host = "127.0.0.1"
$smtp.Port = 587

$creds = New-Object System.Net.NetworkCredential
# $currentCreds = Get-Credential 

$creds.Domain = "" 
$creds.UserName = "my_user"  # $currentCreds.UserName
$creds.Password = "my_pass"  # $currentCreds.GetNetworkCredential()

fcenobi

The following is mostly taken from the example published at https://mkaz.com/2013/07/03/run-script-at-start-on-debian/

Write an init.d script according to the the dependency-booting specification (see at https://wiki.debian.org/LSBInitScripts). , say it foo.sh. Place the script under /etc/init.d.

ln -s /root/scripts/foo.sh /etc/init.d/foo 

Update the runlevel directories under /etc/rc*:

update-rc.d foo defaults

fcenobi

# This is an example from a work in progress, so final versions might
# be slightly different. Don't use as a guide after release!

# Define rule set macros

# Whitelist a TCP destination port on the network. Use this as a template to
# make your own rule sets for more advanced criteria like tag matches, etc.
# This works for both IPv4 and IPv6. Add an ethertype match to restrict it to
# one or the other.
macro tcp_whitelist_dest_port($port)