tips

ifconfig | grep "inet " | grep -v 127.0.0.1

awk '$10 == 200 {print $8}' weixin_access_log.20150206 | grep 'cf2015/cf.*\.php$' | sort | uniq -c
awk -F '[,]'      //指定分隔符
54.65.110.84
/bin - Common binaries

/sbin - Binaries used for system administration.

/boot - Static files of the boot loader. Usually it contain the Linux kernel, Grub boot loader files and so on.

/dev - Device

/home - User HOME directories are found here. In unices like FreeBSD, the HOME directories are found in /usr/home. And in Solaris it is in /export. So quite a big difference here.

/lib - Essential shared libraries and kernel modules.

/mnt - Temporary mount point useful for when you insert your USB stick and it gets mounted under /mnt. Though in Ubuntu and the likes, it is usually mounted under /media.

/var - Variable data, such as logs, news, mail spool files and so on which is constantly being modified by various programs running on your system.

/tmp - Temporary files are placed here by default.

/usr - The secondary hierarchy which contain its own bin and sbin sub-directories.

/etc - Usually contain the configuration files for all the programs that run on your Linux/Unix system.

/opt - Third party application packages.

/srv - Contains data for services provided by the system.

And of course there is the /proc directory which does not actually reside on the disk.

ubuntu install curl
sudo apt-get install curl libcurl3 libcurl3-dev php5-curl

斑羚在线 张仝openid=ooP3yjpH1JL7wjXG1z2KSjQCd-KQ
两个文件的交集
grep -F -f a.txt  b.txt 
在b中，不在a中
grep -F -v  -f   a.txt b.txt  

curl -sS https://getcomposer.org/installer | php

查看磁盘类型
df -T -h

修改/etc/ssh/sshd_config
找到 PasswordAuthentication no，把no改成yes

ssh -i aws-ec2.pem ubuntu@54.65.110.84 'mkdir -p .ssh && cat >> .ssh/authorized_keys' < ~/.ssh/id_rsa.pub

usermod -a -G apache cnzhx

http://www.redbeanphp.com/downloads/RedBeanPHP4_1_4.tar.gz

alter table table_name AUTO_INCREMENT=n

cat  ytvpn.txt |  awk 'NR > 1 {print $2}'| while read x ; do echo `ping -c 3 $x | awk -F '[ /]' 'NR==1 {ip=$2} $1=="round-trip" {print ip,$8}'` & done | sort -n -k2

{ "keys": ["ctrl+shift+r"], "command": "reindent" , "args": { "single_line": false } 

curl -H "Content-Type: application/json" -X POST -d '{"action_name": "QR_LIMIT_STR_SCENE", "action_info": {"scene": {"scene_str": "20150414sd"}}}' https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=TOKEN

$content = simplexml_load_string('<content><![CDATA[Hello, world!]]></content>', null, LIBXML_NOCDATA);




表1.常用的元字符
代码	说明
.	匹配除换行符以外的任意字符
\w	匹配字母或数字或下划线或汉字
\s	匹配任意的空白符
\d	匹配数字
\b	匹配单词的开始或结束
^	匹配字符串的开始
$	匹配字符串的结束

表2.常用的限定符
代码/语法	说明
*	重复零次或更多次
+	重复一次或更多次
?	重复零次或一次
{n}	重复n次
{n,}	重复n次或更多次
{n,m}	重复n到m次

表3.常用的反义代码
代码/语法	说明
\W	匹配任意不是字母，数字，下划线，汉字的字符
\S	匹配任意不是空白符的字符
\D	匹配任意非数字的字符
\B	匹配不是单词开头或结束的位置
[^x]	匹配除了x以外的任意字符
[^aeiou]	匹配除了aeiou这几个字母以外的任意字符


PHPExcel
$inputFileName = './accounts.xls';
echo 'Loading file ',pathinfo($inputFileName,PATHINFO_BASENAME),' using IOFactory to identify the format<br />';
$objPHPExcel = PHPExcel_IOFactory::load($inputFileName);
echo '<hr />';
$objPHPExcel->setActiveSheetIndex(1);
$sheetData = $objPHPExcel->getActiveSheet()->toArray(null,true,true,true);

$objPHPExcel->setActiveSheetIndex(0)
            ->setCellValue('A'.$row, $account_name)
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->save(str_replace('.php', '.xlsx', __FILE__));
$objPHPExcel_output->createSheet(1);

去除重复行不排序 remove duplicated lines without sort
cat filename | awk '!x[$1]++{print $1}'