Could Someone Help Me Reversing What This Script Does Please?

[TLoMatt]

Hi there because Groovy Mister appeared I immediately wanted to try it when I was trying to make it work i've noticed that groovy mister needed a static ip for the ethernet port at first i couln't find useful information , then I finally found a mister forum post viewtopic.php?t=1602 in which someone made a script that user says that you only have to open and fill the script ip with the ip you'd like to use so i did , after doing that and opened that script from the scripts folder everything worked like a charm but i've noticed my mister can no longer connect to the wifi network like before so I wanna know how can I reverse this script in order to make my mister work normally like before and also I wanna know which is the best method to set a static ip to the mister ethernet port and if there's a way to have wifi adapter working and if plugged an ethernet using a static ip that script seems to force me using only ethernet port, thanks in advance the script is this:

network_ip_static_eth0.sh

Code: Select all

#!/bin/sh

set -a

# set ip address, subnet mask, standard gateway, dns server and mac address

SIA_IP=192.168.0.77
SIA_SM=255.255.255.0
SIA_GW=192.168.0.1
SIA_NS=8.8.8.8
SIA_MA=02:03:04:05:06:01

# display ip address, subnet mask, standard gateway, dns server and mac address

echo -----------------------------------------
echo Set static IP address for interface wlan0
echo -----------------------------------------
echo "IP address  $SIA_IP"
echo "Subnet mask $SIA_SM"
echo "Std gateway $SIA_GW"
echo "DNS server  $SIA_NS"
echo "MAC address $SIA_MA"
echo -----------------------------------------

# check if /etc is writeable

if [ ! -w /etc/network/interfaces ]; then
  echo
  echo ERROR : File /etc/network/interfaces not writeable, run script via ssh shell
  echo
  exit
fi

# set eth0 static ip address

cat << EOF > /etc/network/interfaces
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address $SIA_IP
netmask $SIA_SM
gateway $SIA_GW
dns-nameservers $SIA_NS
EOF

# set dns server

cat << EOF > /etc/init.d/S99staticip
#!/bin/sh
echo 'nameserver $SIA_NS' > /etc/resolv.conf
EOF

chmod 755 /etc/init.d/S99staticip

# disable dhcp client daemon

if [ -f /etc/init.d/S41dhcpcd ]; then
  mv /etc/init.d/S41dhcpcd /etc/init.d/disabled.S41dhcpcd
fi

# set eth0 mac address

if [ -f /media/fat/linux/u-boot.txt ]; then
  perl -pi -e 'eof && s!$!\nethaddr=$ENV{SIA_MA}! unless s!(ethaddr=)\S+!${1}$ENV{SIA_MA}!;' /media/fat/linux/u-boot.txt
else
  echo "ethaddr=$SIA_MA" > /media/fat/linux/u-boot.txt
fi

# power off message

echo
echo POWER MISTER DEVICE OFF + ON
echo

[bbond007]

Code: Select all

rm /etc/init.d/S99staticip
mv /etc/init.d/disabled.S41dhcpcd /etc/init.d/S41dhcpcd

Code: Select all

joe /etc/network/interfaces

edit/change it to:

Untitled.png (12.93 KiB) Viewed 1532 times

ctrl-k x (to save)

[TLoMatt]

Hi bbond007 thanks for the reply I decompressed the file changed it's format to '.sh' , putted in the scripts folder and run it through mister but even though I get this message:

Whats-App-Image-2024-02-12-at-8-34-25-PM.jpg (77.8 KiB) Viewed 167 times

[bbond007]

Hi bbond007 thanks for the reply I decompressed the file changed it's format to '.sh' , putted in the scripts folder and run it through mister but even though I get this message:

Its not a script but a config file.

I provided the stock /etc/network/interfaces for your reference. You need to edit your file to match with the joe command.

rather than edit (with joe), you could also put it in /media/fat and copy it:

Code: Select all

cp /media/fat/interfaces /etc/network/interfaces
chmod 644 /media/fat/interfaces

Please connect via putty(SSH) or use the F9 console and follow the above instructions implicitly to reverse what this script did --> viewtopic.php?p=83375#p83375

[bbond007]

Honestly,

I think if you really need the ethernet IP to be static, I think it is better to make your changes to the DHCP config in your router. It should allow you to tie a specific MAC address (probably 02:03:04:05:06:01) to a specific IP address. My router is a ASUS RT-N66R, your options may look slightly different. Otherwise when the linux.img updates you'll be no longer be static.

Untitled.png (19.6 KiB) Viewed 1449 times

I've made mine always 192.168.1.75 (and it worked) in this example:

Untitled2.png (22.18 KiB) Viewed 1436 times

Your WiFi should have a different MAC address so you can follow the same procedure to make that one static too. If you want.

Hope that helps...

[yoshi41]

There are 3 scripts in the zip file here viewtopic.php?p=49700#p49700.

Code: Select all

network_ip_dhcp.sh          (config eth0 and wlan0 with dhcp)
network_ip_static_eth0.sh   (config eth0 with static ip)
network_ip_static_wlan0.sh  (config wlan0 with static ip)

Setting up static ip for both would require to configure the routing table (the script doesn't do that). Therefore it's necessary to run the corresponding script when switching between static wlan and eth.

To "reverse" the changes (static ip config), just run the dhcp script.

[MiSTer Consoles]

Honestly,

I think if you really need the ethernet IP to be static, I think it is better to make your changes to the DHCP config in your router. It should allow you to tie a specific MAC address (probably 02:03:04:05:06:01) to a specific IP address. My router is a ASUS RT-N66R, your options may look slightly different. Otherwise when the linux.img updates you'll be no longer be static.

Untitled.png

I've made mine always 192.168.1.75 (and it worked) in this example:

Untitled2.png

Your WiFi should have a different MAC address so you can follow the same procedure to make that one static too. If you want.

Hope that helps...

To minimize latency when streaming from a PC to Groovy MiSTer it is recommended to set static IPs on both devices and connect them directly thru their ethernet ports bypassing a router altogether. Whenever the MiSTer has to connect to the internet (for updates and such) the ethernet cable would have to be removed from the PC and connected to the router. This is what I do. Unfortunately I'm not sure how a WiFi dongle work work in this type of setup.