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How to test an Internet connection with bash?
...on't get, just check page availability
$? : shell return code
0 : shell "All OK" code
Without wget
#!/bin/bash
echo -e "GET http://google.com HTTP/1.0\n\n" | nc google.com 80 > /dev/null 2>&1
if [ $? -eq 0 ]; then
echo "Online"
else
echo "Offline"
fi
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How can I query a value in SQL Server XML column
I have following XML stored in a XML column (called Roles ) in a SQL Server database.
8 Answers
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Unexpected value from nativeGetEnabledTags: 0
I installed the latest version of the SDK (r21) and ADT 21.0.0. I tried simple code, and it works well, but now I get a warning in LogCat that did not appear in the previous versions:
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angular ng-repeat in reverse
...le is an array before performing the reverse, or making it more lenient to allow the reversal of more things such as strings.
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How can I detect if a selector returns null?
...Why did you wrap 'this' inside a $() ? wouldn't 'this' in this context actually point to jQuery object ?
– Adham Atta
Mar 28 '11 at 11:25
1
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How to add a downloaded .box file to Vagrant?
...hing in the Vagrantfile. I am just using the Vagrantfile that got automatically created upon vagrant init. When i cat Vagrantfile, I don't see anything called a password or pem or anything
– Rakib
Sep 15 '15 at 12:31
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What happens when a duplicate key is put into a HashMap?
...laces the previous value associated with the given key in the map (conceptually like an array indexing operation for primitive types).
The map simply drops its reference to the value. If nothing else holds a reference to the object, that object becomes eligible for garbage collection. Additionall...
Loop code for each file in a directory [duplicate]
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Is the $files variable used to avoid calling scandir() more than once in the foreach loop? Or can I embed it directly without any side effects?
– Zero3
May 10 '15 at 15:57
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How to disable mouseout events triggered by child elements?
...tp://docs.jquery.com/Events/jQuery.Event#event.stopPropagation.28.29
Basically you need to catch the event in the children DOM nodes, and there stop their propagation up the DOM tree. Another way, although really not suggested (as it can severely mess with existing events on your page), is to set e...
How can I convert a stack trace to a string?
... If you don't like including an external library for something as small and simple as this, use this answer.
– Stijn de Witt
Jan 31 '12 at 8:31
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