Re: How to run automatically a script as soon root login

[Mario Marietto <marietto2008@gmail.com>]

The command iptables -A POSTROUTING -t nat -s 192.168.1.5 -j MASQUERADE doesn't work if invoked as a user,it says "you must be root". So,as user,the script seems to be working fine like this :

function jumpto

{

        label=$1

        cmd=$(sed -n "/$label:/{:a;n;p;ba};" $0 | grep -v ':$')

        eval "$cmd"

        exit

}

start=${1:-"start"}

jumpto $start

start:

warp-cli disconnect

OLD_IP="$(curl -s api.ipify.org)"

#echo 1 > /proc/sys/net/ipv4/ip_forward (because I've uncommented this command inside the file /etc/sysctl.conf)

sudo iptables -A POSTROUTING -t nat -s 192.168.1.5 -j MASQUERADE

warp-cli connect

NEW_IP="$(curl -s api.ipify.org)"

echo Connected to Cloudflare Warp...

echo OLD IP is $OLD_IP , NEW IP is $NEW_IP

mid :

if [ "$OLD_IP = $NEW_IP ]

then

echo OLD IP is $OLD_IP , NEW IP is $NEW_IP : it does not work anymore,reconnecting...

sleep 10

jump foo

else

echo OLD IP is $OLD_IP , NEW IP is $NEW_IP : it still works.

sleep 10

fi

jumpto mid

foo:

warp-cli disconnect

OLD_IP="$(curl -s api.ipify.org)"

warp-cli connect

NEW_IP="$(curl -s api.ipify.org)"

echo OLD IP is $OLD_IP , NEW IP is $NEW_IP : it works again.

jumpto mid

On Mon, May 13, 2024 at 2:59 PM <tomas@tuxteam.de> wrote:

On Mon, May 13, 2024 at 02:53:18PM +0200, Nicolas George wrote:
> tomas@tuxteam.de (12024-05-13):
> > That's like slicing your morning baguette with the chainsaw.
>
> Worse than that, it will only work from an X11 environment. Certainly
> not at boot.

The analogy to that would be that not many kitchens are equipped with
a chainsaw. Mine isn't ;-)

Cheers
--
t

--

Mario.