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import torch
torch.Tensor(1).cuda()
print("hello world!")
f = open("demofile2.txt", "a")
f.write("Now the file has more content!")
f.close()

yingca1

private static byte[] iv = "0000000000000000".getBytes();
private static String decrypt(String encrypted, String seed)
    throws Exception {
    byte[] keyb = seed.getBytes("utf-8");
    MessageDigest md = MessageDigest.getInstance("SHA-256");
    byte[] thedigest = md.digest(keyb);
    SecretKeySpec skey = new SecretKeySpec(thedigest, "AES");
    Cipher dcipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    dcipher.init(Cipher.DECRYPT_MODE, skey, new IvParameterSpec(iv));
    byte[] clearbyte = dcipher.doFinal(Base64.decode(encrypted, Base64.DEFAULT));

yingca1

venv: venv/bin/activate
venv/bin/activate: requirements.txt
	test -d venv || virtualenv venv
	venv/bin/pip install -Ur requirements.txt
	touch venv/bin/activate

clean: venv
	venv/bin/pip freeze | grep -v -f requirements.txt - | grep -v '^#' | xargs venv/bin/pip uninstall -y

freeze: venv

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# Clean, simple, compatible and meaningful.
# Tested on Linux, Unix and Windows under ANSI colors.
# It is recommended to use with a dark background and the font Inconsolata.
# Colors: black, red, green, yellow, *blue, magenta, cyan, and white.

# Machine name.
local platform=`uname`
local ipaddr=$HOST
if [[ "$platform" == "Darwin" ]]; then
ipaddr=$(ipconfig getifaddr en0)

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import urllib.request
import asyncio
import json

r = urllib.request.urlopen('https://raw.githubusercontent.com/spacelan/wechat-emoticon/master/emoticons.json').read().decode('utf8')
json_obj = json.loads(r)

@asyncio.coroutine
def download(todo):
  urllib.request.urlretrieve(todo.get('url'), todo.get('md5') + '.gif')

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# 批量装文件夹下apk
for f in *.apk ; do adb install -r $f; done; 

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<?xml version="1.0" encoding="utf-8" ?>
<resources>
  <color name="white">#FFFFFF</color><!--白色 -->
  <color name="ivory">#FFFFF0</color><!--象牙色 -->
  <color name="lightyellow">#FFFFE0</color><!--亮黄色 -->
  <color name="yellow">#FFFF00</color><!--黄色 -->
  <color name="snow">#FFFAFA</color><!--雪白色 -->
  <color name="floralwhite">#FFFAF0</color><!--花白色 -->
  <color name="lemonchiffon">#FFFACD</color><!--柠檬绸色 -->
  <color name="cornsilk">#FFF8DC</color><!--米绸色 -->

yingca1

mac 硬盘测速
time dd if=/dev/zero bs=1024k of=tstfile count=1024
time dd if=tstfile bs=1024k of=/dev/null count=1024

显示：defaults write com.apple.finder AppleShowAllFiles -bool true
隐藏：defaults write com.apple.finder AppleShowAllFiles -bool false 

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adb logcat -b main -b radio -b events -v time>test.log

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netsh wlan set hostednetwork mode=allow ssid="wifi hotspot name" key="wifi password"

netsh wlan start hostednetwork