#!/bin/bash
start=`date +%s`
stop=`date +%s`
echo "程序执行时间$[ stop - start ]秒"
Bash计算脚本执行时间
发布时间:December 12, 2013 // 分类:Shell // No Comments
从文本导入数据到数据库
发布时间:December 9, 2013 // 分类:PHP,数据库 // No Comments
文本多列以,分隔,导入到指定字段:
load data local infile "file.txt" into table db.table FIELDS TERMINATED BY ',' (name,address);
load data local infile "file.txt" into table db.table (name,address) FIELDS TERMINATED BY ',';
update db.table SET aaa = 'test';
也可使用PHP以数组的方式逐行插入,自定义方便。
<?php
$hostname="localhost";
$username="root";
$password="passwd";
$dbname="dbname";
mysql_connect($hostname,$username,$password);
mysql_select_db("$dbname");
$mydate=file("/root/m.txt");
$n=count($mydate);
for($i=0;$i<$n;$i++){
$date=explode(",",$mydate[$i]);
$str="insert into table (name,address) values ('$date[0]','$date[1]')";
mysql_query($str);
}
mysql_close();
echo "ok!";
?>
PHP数组实现简单循环队列
发布时间:December 8, 2013 // 分类:PHP // No Comments
<?php
function queue() {
static $queue = array(a,b,c,d);
$a = array_shift($queue);
$queue[] = $a;
print_r($queue);
echo $a;
}
queue();
queue();
queue();
queue();
?>
其它可用到的函数:
array_unshift() 在数组开头插入元素
array_push() 在数组尾部插入数据
array_pop() 删除数组尾部数据
解密函数
发布时间:December 8, 2013 // 分类:PHP // No Comments
<?php
function jspassword($p, $vc, $vt) {
$p = strtoupper(md5($p));
for ($i = 0; $i < strlen($p); $i = $i + 2) {
$temp .= '\x' . substr($p, $i, 2);
}
return strtoupper(md5(strtoupper(md5(hex2asc($temp) . hex2asc($vt))) . $vc));
}
function hex2asc($str) {
$str = join('', explode('\x', $str));
for ($i = 0;$i < strlen($str);$i += 2) {
$data.= chr(hexdec(substr($str, $i, 2)));
}
return $data;
}
function getGTK($skey){
$hash = 5381;
for($i=0;$i<strlen($skey);++$i){
$hash += ($hash << 5) + utf8_unicode($skey[$i]);
}
return $hash & 0x7fffffff;
}
function utf8_unicode($c) {
switch(strlen($c)) {
case 1:
return ord($c);
case 2:
$n = (ord($c[0]) & 0x3f) << 6;
$n += ord($c[1]) & 0x3f;
return $n;
case 3:
$n = (ord($c[0]) & 0x1f) << 12;
$n += (ord($c[1]) & 0x3f) << 6;
$n += ord($c[2]) & 0x3f;
return $n;
case 4:
$n = (ord($c[0]) & 0x0f) << 18;
$n += (ord($c[1]) & 0x3f) << 12;
$n += (ord($c[2]) & 0x3f) << 6;
$n += ord($c[3]) & 0x3f;
return $n;
}
}
function get_g_tk($skey){
if(!$skey) return false;
$hash = 5381;
for($i=0;$i<strlen($skey);++$i){
$hash += ($hash << 5) + ord($skey[$i]);
}
return $hash & 0x7fffffff;
}
echo jspassword('password','!DZW','\x00\x00\x00\x00\xa2\xfc\x7a\x80')."\n";
echo getGTK("@gmj2sEfSM")."\n";
?
Diff文件目录比较工具
发布时间:December 7, 2013 // 分类:常用软件 // No Comments
常用参数:
-b 忽略空格数目的不同
-B 忽略空白行
-q 只列出两个文件有无差异,并不比较
-a 强制比较二进制文件
-c 显示不同之处的前后部分内容
-r 比较目录时,比较其子目录
-y 在两侧显示两个文件
--suppress-common-line 只显示两个文件不同的行,否则不显示
--left-column 仅当两个文件不同时才显示右侧行,否则只显示左侧行
示例:
diff -r -y --left-column dir1 dir2
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- opnfense: 谢谢博主!!!解决问题了!!!我之前一直以为内置的odhcp6就是唯一管理ipv6的方式
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- 海运: 恩山有很多。
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