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Why is a “GRANT USAGE” created the first time I grant a user privileges?
I'm new to the admin side of DBMS and was setting up a new database tonight (using MySQL) when I noticed this. After granting a user a privilege for the first time, another grant is created that looks like
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String comparison in bash. [[: not found
...ry:
$ bash myscript
or, if the script is executable:
$ ./myscript
sh and bash are two different shells. While in the first case you are passing your script as an argument to the sh interpreter, in the second case you decide on the very first line which interpreter will be used.
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Nohup is not writing log to output file
I am using the following command to run a python script in the background:
6 Answers
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Delete a key from a MongoDB document using Mongoose
... can do:
User.update({_id: user._id}, {$unset: {field: 1 }}, callback);
And since version 2.4, if you have an instance of a model already you can do:
doc.field = undefined;
doc.save(callback);
share
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Android 'Unable to add window — token null is not for an application' exception
I get the following Android exception when I try to open a dialog. Can someone please help me understand what is going on and how can I fix this problem?
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How do I center align horizontal menu?
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From http://pmob.co.uk/pob/centred-float.htm:
The premise is simple and basically just involves a widthless float wrapper that is floated to the left and then shifted off screen to the left width position:relative; left:-50%. Next the nested inner element is reversed and a relative position o...
How to display long messages in logcat
...1000 then you can split the string you want to log with String.subString() and log it in pieces. For example:
int maxLogSize = 1000;
for(int i = 0; i <= veryLongString.length() / maxLogSize; i++) {
int start = i * maxLogSize;
int end = (i+1) * maxLogSize;
end = end > veryLongStri...
How to use WinForms progress bar?
...groundWorker. If you have a loop that large in your WinForm it will block and your app will look like it has hanged.
Look at BackgroundWorker.ReportProgress() to see how to report progress back to the UI thread.
For example:
private void Calculate(int i)
{
double pow = Math.Pow(i, i);
}
pri...
Changing .prop using jQuery does not trigger .change event
...ange event is fired when the value is changed by users interaction on page and not when value is modified using code.
Here you need to use .change() or .trigger("change") after changing the property:
$('input[type="checkbox"][name="something"]').prop("checked", false).change();
Working Demo
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Remove border from IFrame
...to figure out in JavaScript you just need element.frameBorder=0. no .style and use 0, not '0'
– anderspitman
Aug 2 '14 at 23:34
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