Sharing PC WiFi internet to USB Ethernet device (raspberry Zero USB connected)

I connected my Pi Zero to my PC ( Linux LMDE 3 Cindy) via USB port successfully, SO i want to connect to internet via my laptop which is connected to internet by its WIFI.

I found this instruction or this question via raspberrypi.stackexchange but those are working for window or MAC OS,but i don’t find it for Linux!!!!

SO i need the similar instruction for enabling sharing my internet via USB enp0s20f0u1 device (PI Zero) in Linux. for example in windows we need to :

In the WiFi Properties window, click on the “Sharing” tab : similar to this photo:

i could assist one IP (192.168.7.2) for my raspberry by running this code in my raspberry based this instructions :

sudo nano /etc/network/interfaces allow-hotplug wlan1 iface wlan1 inet manual    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf  allow-hotplug usb0 iface usb0 inet static         address 192.168.7.2         netmask 255.255.255.0         network 192.168.7.0         broadcast 192.168.7.255         gateway 192.168.7.1 

I have this (sudo ifconfig) in my Linux:

 enp0s20f0u2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500         inet 169.254.27.126  netmask 255.255.0.0  broadcast 169.254.255.255         inet6 fe80::cff5:f703:7327:dd9  prefixlen 64  scopeid 0x20<link>         ether 6e:2f:15:92:bd:a8  txqueuelen 1000  (Ethernet)         RX packets 2936  bytes 244294 (238.5 KiB)         RX errors 0  dropped 0  overruns 0  frame 0         TX packets 2113  bytes 174942 (170.8 KiB)         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0    wlp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500         inet 192.168.1.105  netmask 255.255.255.0  broadcast 192.168.1.255         inet6 fe80::373d:1b7f:5b9e:8ddc  prefixlen 64  scopeid 0x20<link>         ether c8:3d:d4:3c:23:63  txqueuelen 1000  (Ethernet)         RX packets 33305  bytes 31322783 (29.8 MiB)         RX errors 0  dropped 0  overruns 0  frame 0         TX packets 26405  bytes 4264995 (4.0 MiB)         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0 

the enp0s20f0u2i2 is my Raspberry zero which is using IPV4 Link-local only method but i could change its IP to static IP like 192.168.7.2 as described above.

And in my raspberry:

pi@raspberrypi:~ $ifconfig -a lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 1000 (Local Loopback) RX packets 72 bytes 6840 (6.6 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 72 bytes 6840 (6.6 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 usb0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 169.254.183.232 netmask 255.255.0.0 broadcast 169.254.255.255 inet6 fe80::d7db:e53b:407d:8d65 prefixlen 64 scopeid 0x20<link> ether ee:70:24:ba:2d:57 txqueuelen 1000 (Ethernet) RX packets 182 bytes 28198 (27.5 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 172 bytes 15872 (15.5 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0  so when i do this site instruction I run this code in my Linux: # Bring both interfaces into promiscuous mode sudo ip link set wlp2s0 promisc on  and this code in my raspberry: sudo ip link set usb0 promisc on  when i run this code in my LINUX OS (laptop): # Creating a new bridge interface sudo brctl addbr br0 # Set the forwarding delay to 0. # While this is not necessary, I learned that it help with faster configuration sudo brctl setfd br0 0  SO when running next step (sudo brctl addif br0 wlp2s0 enp0s20f0u2) i get this error: can't add wlp2s0 to bridge br0: Operation not supported  so i doing this :sudo iw dev wlp2s0 set 4addr on from here to solve this bug, but i lose my internet connection : so@notebook:~$   ping www.google.com ping: www.google.com: Name or service not known 

ans also lose my connection with my Raspberry zero (USB Ethernet).

SO what i must t to do to make a bridge for sharing my laptop internet with raspberry zero?

• I have this kind of question in raspberrypi.stackexchange site and based on those comments,I asked this question here

Thanks a lot.

after cv.normalize(img,img), the value of img’s pixels alway is zero

from PIL import Image import numpy as np import time import cv2 as cv

im = Image.open(“./dataset//1.jpg”)

new_img2 = im.resize((64, 64), Image.BILINEAR)

mat = np.asarray(new_img2.convert(‘RGB’)) # 原始图片 mat = mat.reshape(1, 64, 64, 3)

cv.normalize(mat, mat, 1, 0, cv.NORM_MINMAX)

print(mat)

the sorce image’s pixels is not 0, but the print’s result is like below:

[0 0 0] [0 0 0] [0 0 0]]

[[0 0 0] [0 0 0] [0 0 0] … [0 0 0] [0 0 0]

why two bit of stack cookie in glibc is always zero

why two last bit of stack cookie in glibc library is always zero and is there any other options in glibc library to protect app from stack overflow.

Magento 1.9 skip payment method step when grandtotal is zero

I want to skip the payment method step when grandtotal is zero
Any help would be appreciated.
Thanks!!

Etale algebra whose local rank is constantly zero is the zero algebra

While working through a proof of this paper, at the middle of page 46, the author seems to claim the following is true:

Let $$A\rightarrow B$$ be an etale map of rings. Suppose that for every prime $$P\subset A$$ we have $$\kappa(P)\otimes_{A}B=0$$ where $$\kappa(P)$$ is the residue field at the prime ideal $$P$$. Then $$B=0$$.

The only thing I seem to be able to extract from here is that $$PB=B$$ for all primes $$P$$ of $$A$$, which does not seem enough for any kind of conclusion, since $$B$$ is not necessarily a finite $$A$$-module. Of course if we would have some Noetherianity or some projectivity assumptions , perhaps one can then use the connections between the different definitions of rank of a module. But else I don’t know how to use that $$A\rightarrow B$$ is an etale ring map.

What is a campaign zero?

My friends have been talking about a type of D&D5e gameplay called a campaign zero. I don’t understand what it is. They are trying to get me to make my campaign into that type of game but I don’t even understand hpw to do that.

What happens when you roll zero or negative damage?

If a Kobold Dragon Mage (Pathfinder Playtest Bestiary, p. 83) hits a character with its staff, it does 1d4–2 damage. If a 2 is rolled on the die, how much damage is dealt? What if a 1 is rolled on the die?

In both these cases in 1st-edition Pathfinder, the result would be 1 nonlethal damage, but I could find no answer to this question in the Pathfinder Playtest Rulebook.

Stable maps with irreducible domain are dense in moduli space of stable maps of genus zero

there is a famous lemma which says: if $$Y$$ and $$W$$ are flat,projective schemes over $$S$$ and $$s \in S$$ be a geometric point and $$Y_s$$ and $$W_s$$ be fibers over $$s$$ and $$f:Y_s \to W_s$$ be a morphism then with some good conditions we have:

Dimension of every component of scheme $$Hom_S(Y,W)$$ at a point $$f$$ is at least:dim$$H^0(Y_s,f^*T_{W_s})-$$ dim$$H^1(Y_s,f^*T_{W_s})+$$ dim$$S$$.

Now suppose that $$C$$ is a nodal curve of genus zero and $$\mu:C \to X$$ is a stable map.Suppose that $$\bar{C}$$ be smoothing of $$C$$ over some base like $$S$$ and $$\chi = X \times S$$.

($$X$$ is convex,nonsingular variety)

My question is that how can we use above lemma to prove that $$\mu$$ lies in closure of locus of maps with irreducible domain?

Which interesting characterestic zero field $E$ (e.g a pseudofinite field) can support a Weil cohomology?

Let’s consider the category of smooth projective varieties over a fixed characteristic $$p>0$$ algebraic closed field $$k$$. For a Weil cohomology theory with coefficient field $$E$$, by definition it shall satisfy finiteness property, Poincare duality, Kunneth formula, existence of cycle maps, weak and hard Lefschetz theorem.

Consider the class $$\mathcal {C}$$ of characterestic zero fields $$E$$ that support a Weil cohomology. Not all fields of zero characteristic can be a coeffiecient field, as is discussed in Serre’s example of a supersingular elliptic curve over $$k$$. We know

• $$E \in \mathcal {C} \Rightarrow E$$ can’t embedded into $$\mathbb R$$ .
• For $$E_1 \hookrightarrow E_2$$, $$E_1 \in \mathcal {C} \Rightarrow E_2 \in \mathcal {C}$$ .

• $$\mathbb Q_l \in \mathcal {C}$$ $$(l \not = p)$$ .

• $$W(k)[1/p] \in \mathcal {C}$$.

More interestingly, we also know some pseudofinite field lie in $$\mathcal C$$, namely the ultraproduct of $$\mathbb F_l$$ $$(l \not =p)$$ using a non-principal ultrafilter, see “a new Weil cohomology theory” by Ivan Tomasic. And there is a dicussion of Weil II for such Weil cohomology theory, see https://webusers.imj-prg.fr/~anna.cadoret/Weil2Ultra_OberwolfachReports.pdf。

So my question is, can we describe other interesting field in $$C$$ ?

ext2 – all files are size zero

I’m working on a legacy system, hence ext2. I’m booting linux with syslinux. I create an blank disk image with dd and /dev/zero, then I partition it into 2 partitions with parted and create the file systems. One filesystem is fat32 and the other is ext2. I have to use ext2 and not FAT32 since I’m bumping into the maximum number of files in a FAT32 directory (previous poor system design decisions that I can’t change at this point). After making the file systems, I put syslinux on one partition, and then copy all the system’s assets (graphics and sounds) to the second partition. Now I have a bin file that I can dd to a CF card (yes cf cards, it’s legacy but needs maintenance).

Linux boots correctly every time.

The problem is after boot: Sometimes this works perfectly and other times it doesn’t. The ext2 partition will mount but it lists all the file sizes as zero, other times everything works. I can’t figure out any pattern to it.

What could be the cause for a filesystem to intermittently mount, list the files, but show all the file sizes as zero?