<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[极客老李]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/robot__cat</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; robot__cat]]></copyright><item><title><![CDATA[linux  bash]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/53516860</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/53516860</guid><author>robot__cat</author><pubDate>Thu, 08 Dec 2016 13:12:47 +0800</pubDate><description><![CDATA[vim .bash_history 查看所有的shell命令]]></description><category></category></item><item><title><![CDATA[ubuntu  apache 启动报错]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/52001715</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/52001715</guid><author>robot__cat</author><pubDate>Sat, 23 Jul 2016 00:30:48 +0800</pubDate><description><![CDATA[ubuntu /etc/init.d/apache2 restart 报错
ubuntu AH00558: apache2: Could not reliably determine the server's fully qualified domain name, usin


解决方式

But on Ubuntu 14.04:
 echo "ServerName localho]]></description><category></category></item><item><title><![CDATA[find ./www/ -type f -name "*.php" | xargs grep "phpinfo"]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51766306</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51766306</guid><author>robot__cat</author><pubDate>Mon, 27 Jun 2016 09:27:42 +0800</pubDate><description><![CDATA[find ./www/ -type f -name "*.php" | xargs grep "phpinfo"]]></description><category></category></item><item><title><![CDATA[网站优化]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51713160</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51713160</guid><author>robot__cat</author><pubDate>Sun, 19 Jun 2016 17:31:58 +0800</pubDate><description><![CDATA[网页浏览器缓存
css js 压缩 
css js 合并请求
cdn 缓存
squid 缓存
后加载 预加载
gzip 压缩
memcache缓存
redis缓存
mongodb 缓存
apc缓存
静态化
伪静态
gzip压缩]]></description><category></category></item><item><title><![CDATA[Ubuntu如何开启crontab运行日志?]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51679616</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51679616</guid><author>robot__cat</author><pubDate>Wed, 15 Jun 2016 10:58:33 +0800</pubDate><description><![CDATA[问题背景:

今天发现朋友一台Ubuntu服务器crontab定时运行任务失败，于是果断从crontab的日志里找原因，突然发现其服务器的
 /var/log下没有cron日志，这里记录一下如何开启ubuntu server的crontab日志

解决方法:

将cron.*前面的注释符去掉 


1. 修改rsyslog(大致是第10行):

sudo vim /etc/]]></description><category></category></item><item><title><![CDATA[ubuntu php imageMagick]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51657072</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51657072</guid><author>robot__cat</author><pubDate>Mon, 13 Jun 2016 13:33:48 +0800</pubDate><description><![CDATA[在系统下安装 imageMagick扩展。

1. 打开终端  terminal

2. 如果没有安装 pear请先执行以下命令安装 :
 sudo apt-get install php-pear php5-dev

3. 安装 ImageMagick :
 sudo apt-get install imagemagick libmagickwand-dev

中间可能报错 ]]></description><category></category></item><item><title><![CDATA[Linux 下安redis]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51605509</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51605509</guid><author>robot__cat</author><pubDate>Tue, 07 Jun 2016 17:46:51 +0800</pubDate><description><![CDATA[Linux 下安装

下载地址：http:8651.html，下载最新文档版本。

本教程使用的最新文档版本为 2.8.17，下载并安装：
$ wget http://download.redis.io/releases/redis-2.8.17.tar.gz$ tar xzf redis-2.8.17.tar.gz$ cd redis-2.8.17$ make

make完后 re]]></description><category></category></item><item><title><![CDATA[ubuntu 搭建apache mysql]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51603119</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51603119</guid><author>robot__cat</author><pubDate>Tue, 07 Jun 2016 13:41:01 +0800</pubDate><description><![CDATA[进入ubuntu系统后  进行系统更新

1系统更新

apt-get update

apt-get upgrade

关于update和upgrade的区别]]></description><category></category></item><item><title><![CDATA[一步一步搭建web应用服务器 之 apt-get update 和 upgrade 的区别]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51603106</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51603106</guid><author>robot__cat</author><pubDate>Tue, 07 Jun 2016 13:38:29 +0800</pubDate><description><![CDATA[update

update 是同步 /etc/apt/sources.list 和 /etc/apt/sources.list.d 中列出的源的索引，这样才能获取到最新的软件包。



upgrade

upgrade 是升级已安装的所有软件包，升级之后的版本就是本地索引里的，因此，在执行 upgrade 之前一定要执行 update, 这样才能是最新的。

An updat]]></description><category></category></item><item><title><![CDATA[数据库命令行的一些操作]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51497688</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51497688</guid><author>robot__cat</author><pubDate>Wed, 25 May 2016 13:27:49 +0800</pubDate><description><![CDATA[模糊查询库中有哪些表
 show tables like 'pa_articlet%';]]></description><category></category></item><item><title><![CDATA[truncate delete  清空内容]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51497632</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51497632</guid><author>robot__cat</author><pubDate>Wed, 25 May 2016 13:19:01 +0800</pubDate><description><![CDATA[delete from 表名;

truncate table 表名;

不带where参数的delete语句可以删除mysql表中所有内容，使用truncate
 table也可以清空mysql表中所有内容。

效率上truncate比delete快，但truncate删除后不记录mysql日志，不可以恢复数据。

delete的效果有点像将mysql表中所有记录一条一条删除到]]></description><category></category></item><item><title><![CDATA[mac 下查看端口被占用情况]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51483730</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51483730</guid><author>robot__cat</author><pubDate>Mon, 23 May 2016 18:14:28 +0800</pubDate><description><![CDATA[命令 lsof -i tcp:port  （port替换成端口号，比如6379）可以查看该端口被什么程序占用，并显示PID，方便KILL]]></description><category></category></item><item><title><![CDATA[linux下查看ip]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51459819</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51459819</guid><author>robot__cat</author><pubDate>Fri, 20 May 2016 10:40:42 +0800</pubDate><description><![CDATA[linux 查看ip地址
root@iZ25shgkij6Z:~# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:16:3e:00:2d:64  
          inet addr:10.170.212.195  Bcast:10.170.215.255  Mask:255.255.248.0
          UP BROAD]]></description><category></category></item><item><title><![CDATA[rsync 的简单使用]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51455758</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51455758</guid><author>robot__cat</author><pubDate>Thu, 19 May 2016 17:47:11 +0800</pubDate><description><![CDATA[同步本地an.sql  到服务器1.1.1.1服务器的/tmp/sql/目录下
rsync /tmp/sql/an.sql 1.1.1.1:/tmp/sql/]]></description><category></category></item><item><title><![CDATA[mysql 导入 创建utf-8数据库]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51455618</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51455618</guid><author>robot__cat</author><pubDate>Thu, 19 May 2016 17:32:18 +0800</pubDate><description><![CDATA[创建utf-8编码的数据库
CREATE DATABASE db_name DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;


导入数据库
/usr/local/mysql/bin/mysql -u用户名 -p密码 数据库]]></description><category></category></item><item><title><![CDATA[linux ps命令学习]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51371843</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51371843</guid><author>robot__cat</author><pubDate>Wed, 11 May 2016 09:44:43 +0800</pubDate><description><![CDATA[Linux中的ps命令是Process Status的缩写。ps命令用来列出系统中当前运行的那些进程。ps命令列出的是当前那些进程的快照，就是执行ps命令的那个时刻的那些进程，如果想要动态的显示进程信息，就可以使用top命令。]]></description><category></category></item><item><title><![CDATA[centos linux 安装composer 并且添加到环境变量]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51365592</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51365592</guid><author>robot__cat</author><pubDate>Tue, 10 May 2016 18:46:55 +0800</pubDate><description><![CDATA[首先把php添加到全局命令 参考添加php命令到全局变量-centos
如果php已经是全局命令
1、执行下面命令 下载composer.phar文件
curl -sS https://getcomposer.org/installer | php
2、移动composer.phar文件到/usr/local/bin目录下  是命令全局可用
 mv composer.phar /usr/]]></description><category></category></item><item><title><![CDATA[添加php命令到全局变量-centos]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51365549</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51365549</guid><author>robot__cat</author><pubDate>Tue, 10 May 2016 18:34:10 +0800</pubDate><description><![CDATA[编辑/etc/profile文件
在最后一行加入
PATH=$PAHT:/usr/server/php/bin
保存退出
然后执行 source /etc/profile
就可以在linux下任意地方执行php命令了
执行php -v  查看php的版本号]]></description><category></category></item><item><title><![CDATA[curl]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51363118</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51363118</guid><author>robot__cat</author><pubDate>Tue, 10 May 2016 14:42:59 +0800</pubDate><description><![CDATA[//初始化curl
$curl = curl_init();
//设置请求的url
curl_setopt($curl,CURLOPT_URL,'http://www.baidu.com');
//CURLOPT_RETURNTRANSFER  不设置此值curl_exec直接把数据返回到浏览器输出
//CURLOPT_RETURNTRANSFER 设置为1  curl_exec返回响应信息  赋]]></description><category></category></item><item><title><![CDATA[PHP中9大缓存技术总结]]></title><link>https://blog.youkuaiyun.com/robot__cat/article/details/51355129</link><guid>https://blog.youkuaiyun.com/robot__cat/article/details/51355129</guid><author>robot__cat</author><pubDate>Mon, 09 May 2016 18:33:31 +0800</pubDate><description><![CDATA[1、全页面静态化缓存

也就是将页面全部生成html静态页面，用户访问时直接访问的静态页面，而不会去走php服务器解析的流程。此种方式，在CMS系统中比较常见，比如dedecms；

一种比较常用的实现方式是用输出缓存：
Ob_start()
******要运行的代码*******
$content = Ob_get_contents();
****将缓存内容写入html文件*****
]]></description><category></category></item></channel></rss>