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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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Firebug says “No Javascript on this page”, even though JavaScript does exist on the page

... 'debugger' option. See this page for a discussion on the migration. Read all the posts dated 19 November for further information. It seems to me that the option gives less functionality but Firebug per se is never going to be fixed for Firefox 50 and beyond ...
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git add all except ignoring files in .gitignore file

...roject that had none. The problem is that there are a lot of files to initially add to git with a .gitignore file, but I can't figure out how to add all files without including the files matching something in the .gitignore file. ...
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Disable time in bootstrap date time picker

... I tried all of the solutions posted here but none of them worked for me. I managed to disable the time by using this line of code in my jQuery: $('#datetimepicker4').datetimepicker({ format: 'YYYY-MM-DD' }); This set the forma...
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How does Google Instant work?

...xactly how the new google instant search works? It seems to just be AJAX calls to the old search, but it's pretty hard to simplify Google that much. Anybody have speculations? ...
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How to link a Facebook app with an existing fan page

...ou will find "App Page". There you will be able to create a new page or if all went well, select your page from a list. I found the info in the little question-mark next to "App page". I hope this helps. share | ...
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Java - escape string to prevent SQL injection

...lace in java and am finding it very difficult to work with the the "replaceAll" string function. Ultimately I need a function that will convert any existing \ to \\ , any " to \" , any ' to \' , and any \n to \\n so that when the string is evaluated by MySQL SQL injections will be block...
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Access Control Request Headers, is added to header in AJAX request with jQuery

...ctual request; note that the HTTP method is OPTIONS, not POST. It was actually the 'pre-flight' request that the browser makes to determine whether a cross-domain AJAX request should be allowed: http://www.w3.org/TR/cors/ The Access-Control-Request-Headers header in the pre-flight request include...
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Just disable scroll not hide it?

...op property via javascript just before the layer opening, you could dynamically assign that value as top property of the body element: with this approach the page will stand in its place, no matter if you're on top or if you have already scrolled. Css .noscroll { position: fixed; overflow-y:scrol...
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Fastest way to download a GitHub project

... button which is located under the "Clone or Download" drop down: This allows you to download the most recent version of the code as a zip archive. If you aren't seeing that button, it is likely because you aren't on the main project page. To get there, click on the left-most tab labeled "<&...