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How can I brew link a specific version?
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If you have installed, for example, php 5.4 it could be switched in the following way to php 5.5:
$ php --version
PHP 5.4.32 (cli) (built: Aug 26 2014 15:14:01)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2014 Zend Technologie...
Check if directory mounted with bash
...t/md0 > /dev/null; then
echo "yay"
else
echo "nay"
fi
In my example, the if-statement is checking the exit code of grep, which indicates if there was a match. Since I don't want the output to be displayed when there is a match, I'm redirecting it to /dev/null.
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使用TokuMX配置Replica Set集群 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...onfig)
{
"ok" : 0,
"errmsg" : "couldn't initiate : need all members up to initiate, not ok : 172.17.39.149:27017"
}
需要在防火墙配置中打开相应端口：
vi /etc/sysconfig/iptables
可以查看集群的详细信息：
每次启动服务的记录：
可...
How to design a multi-user ajax web application to be concurrently safe
...r cruel to your infrastructure if you do not configure your (Apache?) and (php?) well enough to be "lightweight" starters. It is desirable to optimize the polling request on the serverside so that it runs for far less time than the length of the polling interval. Splitting that runtime in half might...
append new row to old csv file python
I am trying to add a new row to my old csv file. Basically, it gets updated each time I run the Python script.
7 Answers
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iOS 7 - How to display a date picker in place in a table view?
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With iOS7, Apple released the sample code DateCell.
Demonstrates formatted display of date objects in table cells and use of UIDatePicker to edit those values.
As a delegate to this table, the sample uses the method "didSelectRowAtIndexPath" to ope...
Use HTML5 to resize an image before upload
...a = new FormData($("form[id*='uploadImageForm']")[0]);
if (event.blob && event.url) {
data.append('image_data', event.blob);
$.ajax({
url: event.url,
data: data,
cache: false,
contentType: false,
processData: fa...
Is there a [Go to file…]?
...n a file by typing its name without putting your hand on the mouse. For example:
7 Answers
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Is a GUID unique 100% of the time?
... probability of the same number being
generated twice is very small. For
example, consider the observable
universe, which contains about 5×1022
stars; every star could then have
6.8×1015 universally unique GUIDs.
From Wikipedia.
These are some good articles on how a GUID is made (for .NET) and h...
Git - Pushing code to two remotes [duplicate]
... create a alias for it:
git config alias.pushall '!git push origin devel && git push github devel'
With this, when you use the command git pushall, it will update both repositories.
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