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How to create a bash script to check the SSH connection?

...wnhost -PN -p ssh | grep open` $ echo $a 22/tcp open ssh $ echo $b (empty string) But you'll have to grep the message (nmap does not use the return-value to show if a port was filtered, closed or open). EDIT2: If you're interested in the actual state of the ssh-port, you can substitute grep ope...
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How can I change the color of AlertDialog title and the color of the line under it

...erent color for the title or divider, you use the following code: private String HALLOWEEN_ORANGE = "#FF7F27"; QustomDialogBuilder qustomDialogBuilder = new QustomDialogBuilder(v.getContext()). setTitle("Set IP Address"). setTitleColor(HALLOWEEN_ORANGE). setDividerColor(HALLOWEEN_ORANG...
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Is there still any reason to learn AWK?

...t can be tackled once one is using a concise scripting language that makes string manipulation easy — and awk was one of the first — it proceeds to teach the reader how to implement a database, a parser, an interpreter, and (if memory serves me) a compiler for a small project-specific computer l...
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How to check if a list is empty in Python? [duplicate]

...You can do that, but it would violate pep 8, which says: - For sequences, (strings, lists, tuples), use the fact that empty sequences are false. Yes: if not seq: if seq: No: if len(seq) if not len(seq) – Chris Lacasse No...
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Make a bucket public in Amazon S3 [closed]

...date 2017-11-16, it reports:Error: The policy must contain a valid version string – Timothy.Li Nov 16 '17 at 10:11 ...
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Populate nested array in mongoose

...n 5.5.7, the array notation Yasin mentioned didn't work, contacting in one string instead works. i.e. populate: 'components AnotherRef' – Samih A May 22 at 14:08 add a comment...
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file_put_contents(meta/services.json): failed to open stream: Permission denied

I am new to Laravel. I was trying to open http://localhost/test/public/ and I got 30 Answers ...
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What exceptions should be thrown for invalid or unexpected parameters in .NET?

...rown when the format of an argument is invalid, or when a composite format string is not well formed. – Anthony Sep 11 '18 at 0:58 add a comment  |  ...
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How to print a linebreak in a python function?

I have a list of strings in my code; 8 Answers 8 ...
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Easiest way to pass an AngularJS scope variable from directive to controller?

...; <!-- attribute-foo binds to a DOM attribute which is always a string. That is why we are wrapping it in curly braces so that it can be interpolated. --> <my-component attribute-foo="{{foo}}" binding-foo="foo" isolated-expression-foo="updateFoo(newFoo)" > ...