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What does `kill -0 $pid` in a shell script do?
... 0 to a given PID just checks if any process with the given PID is running and you have the permission to send a signal to it.
For more information see the following manpages:
kill(1)
$ man 1 kill
...
If sig is 0, then no signal is sent, but error checking is still performed.
...
kill(2)
$ man...
Changing CSS Values with Javascript
...sy to set inline CSS values with javascript. If I want to change the width and I have html like this:
9 Answers
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How to convert ActiveRecord results into an array of hashes
...s.all
tasks_records = tasks_records.as_json
# You can now add new records and return the result as json by calling `to_json`
tasks_records << TaskStoreStatus.last.as_json
tasks_records << { :task_id => 10, :store_name => "Koramanagala", :store_region => "India" }
tasks_records...
How can I create a copy of an object in Python?
... you can use the copy.deepcopy() function.
For more details about shallow and deep copying please refer to the other answers to this question and the nice explanation in this answer to a related question.
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How to send a JSON object using html form data
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Get complete form data as array and json stringify it.
var formData = JSON.stringify($("#myForm").serializeArray());
You can use it later in ajax. Or if you are not using ajax; put it in hidden textarea and pass to server. If this data is passed as json ...
Vsphere 6 集群上 安装 oracle rac 遇到的共享磁盘故障 - 数据库(内核) - ...
...er Type section, click Change Type.
Select VMware Paravirtual.
Click OK, and click OK again.
Add configuration parameters for each Oracle RAC virtual machine as described in
Disabling simultaneous write protection provided by VMFS using the multi-writer flag
然而在最佳实践一文中...
How do you create a toggle button?
...ml using css. I want it so that when you click on it , it stays pushed in and than when you click it on it again it pops out.
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$.focus() not working
... focus from the dev console. If you run the following code in your console and then quickly click in your browser window after, you will see it focus the search box:
setTimeout(function() { $('input[name="q"]').focus() }, 3000);
As for your other one, the one thing that has given me trouble in th...
jQuery: serialize() form and other parameters
...t possible to send form elements (serialized with .serialize() method) and other parameters with a single AJAX request?
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How to get current user, and how to use User class in MVC5?
...dentity.GetUserId();
Worth mentioning that User.Identity.IsAuthenticated and User.Identity.Name will work without adding the above mentioned using statement. But GetUserId() won't be present without it.
If you're in a class other than a Controller, use
HttpContext.Current.User.Identity.GetUserI...