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fragment
=====
* initComponents
* initEvents
* initLogic
* onLoadComplement
* onItemClick

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ssh connect slow:
change /etc/ssh/ssh_config to add
GSSAPIAuthentication no

run a shell in every 3 miniutes
*/3 * * * * /bin/bash /path/to/shell/script



sudp cp /usr/share/application/empathy.desktop eclipse.desktop

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the number of significant digits displayed in floating point numbers.
precision = 14|12

当float超过14|12位时会自动用科学计数法表示，所以需要用$num = springf("%.0f", $number)


microtime()=>return a string
microtime(true)=>return a float

echo sprintf("$.0f", $microtime() * 1000000)

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vim下查看文件编码
:set fileencoding

修改文件编码为utf-8
:set fileencoding=utf-8




unix2dos 是把linux文件格式转换成windows文件格式

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> su

> mount | grep system

> mount -o rw,remount /dev/block/stl12 /system

> mount | grep system

> mount -o ro,remount /dev/block/stl12 /system

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## test

* fh

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* $http_host equals always the HTTP_HOST request header.

* $host equals $http_host, lowercase and without the port number (if present), except when HTTP_HOST is absent or is an empty value. In that case, $host equals the value of the server_name directive of the server which processed the request.

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sudo dd bs=1M if=2013-09-25-wheezy-raspbian.img of=/dev/sdb

http://www.raspberrypi.org/downloads

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redis-cli KEYS '_user_token_*' |xargs redis-cli DEL

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git fetch origin

git co gh-pages