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Why do you need to put #!/bin/bash at the beginning of a script file?

I have made Bash scripts before and they all ran fine without #!/bin/bash at the beginning. 9 Answers ...
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What's the difference between a catalog and a schema in a relational database?

...l point of view : The catalog is the place where--among other things--all of the various schemas (external, conceptual, internal) and all of the corresponding mappings (external/conceptual, conceptual/internal) are kept. In other words, the catalog contains detailed information (sometimes...
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How to make Java honor the DNS Caching Timeout?

...rkaddress.cache.negative.ttl as System Properties by using the -D flag or calling System.setProperty because these are not System properties - they are Security properties. If you want to use a System property to trigger this behavior (so you can use the -D flag or call System.setProperty), you wil...
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Flash CS4 refuses to let go

...roject, and it has many source files. I have a fairly heavily-used class, call it Jenine. I recently (and, perhaps, callously) relocated Jenine from one namespace to another. I thought we were ready - I thought it was time. The new Jenine was better in every way - she had lost some code bloat, she h...
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How can I obtain the element-wise logical NOT of a pandas Series?

... Wierd, I actually tested the tilde as it was mentioned in the documentation, but it didn't perform the same as np.invert :S – root Apr 14 '13 at 13:11 ...
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What does “Memory allocated at compile time” really mean?

... languages like C and C++, people often refer to static and dynamic memory allocation. I understand the concept but the phrase "All memory was allocated (reserved) during compile time" always confuses me. ...
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Using the RUN instruction in a Dockerfile with 'source' does not work

I have a Dockerfile that I am putting together to install a vanilla python environment (into which I will be installing an app, but at a later date). ...
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How to enable local network users to access my WAMP sites?

First of all, I read at least 20 articles about this topic, and not one of them can match up the scenario and I screwed up the process numerous times. So I turn help by offering my specific scenario if any help will be appreciated. ...
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Difference between WAIT and BLOCKED thread states

... A thread goes to wait state once it calls wait() on an Object. This is called Waiting State. Once a thread reaches waiting state, it will need to wait till some other thread calls notify() or notifyAll() on the object. Once this thread is notified, it will not...
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Is there a good charting library for iPhone? [closed]

...sign has included iPhone support from the beginning. It's getting pretty close to useable and is currently in use in several shipping iPhone and OS X applications. Edit 2/10 Core Plot has come a long way since I first posted the summary. The framework now has bar charts (including horizontal bar c...