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How to check if smtp is working from commandline (Linux) [closed]

I have a SMTP-server, for the purpose of this question lets call it: smtp.mydomain.com. 4 Answers ...
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Why invoke Thread.currentThread.interrupt() in a catch InterruptException block?

...ch may cause problems. By calling Thread.currentThread().interrupt(), you set the interrupt flag of the thread, so higher level interrupt handlers will notice it and can handle it appropriately. Java Concurrency in Practice discusses this in more detail in Chapter 7.1.3: Responding to Interruption...
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How to use double or single brackets, parentheses, curly braces

I am confused by the usage of brackets, parentheses, curly braces in Bash, as well as the difference between their double or single forms. Is there a clear explanation? ...
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String to LocalDate

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What is the best way to dump entire objects to a log in C#?

So for viewing a current object's state at runtime, I really like what the Visual Studio Immediate window gives me. Just doing a simple ...
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How do I make a Git commit in the past?

... The advice you were given is flawed. Unconditionally setting GIT_AUTHOR_DATE in an --env-filter would rewrite the date of every commit. Also, it would be unusual to use git commit inside --index-filter. You are dealing with multiple, independent problems here. Specifying Date...
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Why do I get TypeError: can't multiply sequence by non-int of type 'float'?

... The problem is that salesAmount is being set to a string. If you enter the variable in the python interpreter and hit enter, you'll see the value entered surrounded by quotes. For example, if you entered 56.95 you'd see: >>> sales_amount = raw_input("[In...
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How to create a template function within a class? (C++)

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converting a .net Func to a .net Expression

Going from a lambda to an Expression is easy using a method call... 9 Answers 9 ...
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numpy: most efficient frequency counts for unique values in an array

In numpy / scipy , is there an efficient way to get frequency counts for unique values in an array? 16 Answers ...