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#!/usr/bin/python3

import sys, cv2

video_file = sys.argv[1]
video = cv2.VideoCapture(video_file)
assert video.isOpened()
frame_cnt = int(video.get(cv2.CAP_PROP_FRAME_COUNT))

def read_frame(pos):

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#!/bin/bash
WIFI_DEVICE=$(iw dev | grep Interface | head -n 1 | sed 's/.*Interface //')
sudo dhclient -r $WIFI_DEVICE
sudo dhclient $WIFI_DEVICE

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apt install libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-randr0 \
			libxcb-render-util0 libxcb-shape0 libxcb-xfixes0 libxcb-xinerama0 \
			libxcb-xkb1 libxkbcommon-x11-0 libgl1-mesa-glx fontconfig \
			libfontconfig libfontconfig1 libfontconfig1-dev
python3 -m pip install pyyaml qtpy qtpy5 pyside2 imgviz termcolor requests

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# conceptions: static images, running containers

docker image ls # list all images
docker image rm IMAGE_NAME  # remove image

docker run -t -i -d --rm --env=DISPLAY=$DISPLAY --net=host IMAGE_NAME /bin/bash # run a image 
docker exec -it CONTAINER_NAME /bin/bash # enter a container
docker kill CONTAINER_NAME # kill a running container
docker rm CONTAINER_NAME # remove a container
docker ps # list all containers

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import sys, io, os.path as path, functools as ft      # basic packages
import urllib.request as url_req, numpy as np, cv2    # extension packages
import torch, torch.nn as nn, torchvision.ops as ops  # pytorch packages

data_path = '.' if len(sys.argv) < 2 else sys.argv[1]
image_file_url = 'https://github.com/pjreddie/darknet/raw/master/data/dog.jpg'
image_filename = path.join(data_path, 'dog.jpg')
weight_file_url = 'https://pjreddie.com/media/files/yolov3.weights'
weight_filename = path.join(data_path, 'yolov3.weights')

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#include <execinfo.h>
void print_trace (void) {
	void *ppArrays[256];
	int nTraceNum = backtrace(ppArrays, sizeof(ppArrays) / sizeof(ppArrays[0]));
	char **ppSymbols = backtrace_symbols(ppArrays, nTraceNum);
	if (ppSymbols != NULL) {
		printf("Obtained %d stack frames.\n", nTraceNum);
		for (int i = 0; i < nTraceNum; i++) {
			printf("%s\n", ppSymbols[i]);
		}

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#!/bin/bash
set -e
sudo apt update -qq
sudo apt install -yq software-properties-common
sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
sudo apt update -qq
sudo apt install -yq gcc-7 g++-7
sudo update-alternatives \
 --install /usr/bin/gcc gcc /usr/bin/gcc-7 60 \
 --slave /usr/bin/g++ g++ /usr/bin/g++-7 \

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if [[ $# -lt 4 ]]; then
	echo "Usage: "$0" <SERVER_IP> <SERVER_PORT> <PROXY_PSWD> <LOCAL_PORT>"
	exit 0
fi

sudo apt-get -y install --no-install-recommends git gettext build-essential \
	autoconf libtool libpcre3-dev asciidoc xmlto libev-dev libc-ares-dev \
	automake libmbedtls-dev libsodium-dev libssl-dev autoconf libtool pkg-config

rm -rf shadowsocks-libev

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#!/bin/bash

set -e

if [[ $# -lt 3 ]]; then
	echo "Usage: "$0" <PROXY_PORT> <PROXY_PSWD>"
	exit 0
fi

apt update

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#!/bin/bash

set -e

sudo apt install -y libpython3-dev python3-pip
sudo pip3 install numpy

sudo apt purge libboost*
sudo apt autoremove --purge