kitelife

使用ffmpeg合并MP4文件

ffmpeg -i "Apache Sqoop Tutorial Part 1.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate1.ts
ffmpeg -i "Apache Sqoop Tutorial Part 2.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts
ffmpeg -i "Apache Sqoop Tutorial Part 3.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate3.ts
ffmpeg -i "Apache Sqoop Tutorial Part 4.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate4.ts
ffmpeg -i "concat:intermediate1.ts|intermediate2.ts|intermediate3.ts|intermediate4.ts" -c copy -bsf:a aac_adtstoasc "Apache Sqoop Tutorial.mp4"

kitelife

<?php

function checkIPClass($ip) {
    $ipLong = ip2long($ip);
    if ($ipLong == -1 || $ipLong === FALSE) {
        return null;
    }
    $ipBinaryString = sprintf('%b', $ipLong);
    $ipBinaryString = str_pad($ipBinaryString, 32, '0', STR_PAD_LEFT);
    

kitelife

cat words.txt | sort | uniq -c | sort -k1,1nr | head -10
/*
sort:  对单词进行排序
uniq -c:  显示唯一的行，并在每行行首加上本行在文件中出现的次数
sort -k1,1nr:  按照第一个字段，数值排序，且为逆序
head -10:  取前10行数据
*/

cat filter.log | awk -F '[' '{print $4}' | awk -F ':' '{print $1}' | sort | uniq -c | sort -k1,1nr | head -10

kitelife

#!/bin/sh

for host in drops.wooyun.org www.aqniu.com www.freebuf.com
do
    /usr/bin/wget http://$host/feed -O /home/work/feeds/$host/feed_$(date "+%Y-%m-%d-%H_%M_%S").xml >> /home/work/feeds/$host/wget.log 2>&1
done

kitelife

private HashMap<String, Object> jsonToMap(String t) throws JSONException {
  HashMap<String, Object> map = new HashMap<String, Object>();
  JSONObject jObj = new JSONObject(t);
  Iterator<?> keys = jObj.keys();
  while (keys.hasNext()) {
    String key = (String) keys.next();
    map.put(key, jObj.get(key));
  }
  return map;
}

kitelife

object Test extends App {
  val a = Array(10, 9, -1, 8, -2, -100, 1000).toBuffer
  var first = true
  val indexes = for (i <- 0 until a.length if first || a(i) >= 0) yield {
    if (a(i) < 0) 
      first = false
    i
  }
  for(j <- 0 until indexes.length)
    a(j) = a(indexes(j))

kitelife

var appFunc = {
    getDistance: function (firstLon, firstLat, secondLon, secondLat) {
        var radFirstLon = appFunc.rad(firstLon);
        var radFirstLat = appFunc.rad(firstLat);
        var radSecondLon = appFunc.rad(secondLon);
        var radSecondLat = appFunc.rad(secondLat);

        var latDiff = radFirstLat - radSecondLat;
        var lonDiff = radFirstLon - radSecondLon;

kitelife

function deepCopy(p, c) {
  c = c || {};
  for (var i in p) {
    if (p.hasOwnProperty(i)) {
      if (typeof p[i] === 'object') {
        c[i] = Array.isArray(p[i]) ? [] : {};
        deepCopy(p[i], c[i]);
      } else {
        c[i] = p[i];
      }

kitelife

function extendCopy(p) {
  var c = {};
  for (var i in p) {
    c[i] = p[i];
  }
  c.uber = p;
  return c;
}

kitelife

function extend(Child, Parent) {
  var p = Parent.prototype;
  var c = Child.prototype;
  for (var i in p) {
    c[i] = p[i];
  }
  c.uber = p;
}