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Checking from shell script if a directory contains files
From a shell script, how do I check if a directory contains files?
26 Answers
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Checking if a string is empty or null in Java [duplicate]
I'm parsing HTML data. The String may be null or empty, when the word to parse does not match.
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What are rvalues, lvalues, xvalues, glvalues, and prvalues?
In C++03, an expression is either an rvalue or an lvalue .
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In the shell, what does “ 2>&1 ” mean?
...hell, if I want to combine stderr and stdout into the stdout stream for further manipulation, I can append the following on the end of my command:
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How to download Xcode DMG or XIP file?
Where does the Mac App Store download the files to under Lion? I need the DMG file in order to repair something in my system, but how can I access that file?
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Why does ENOENT mean “No such file or directory”?
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It's an abbreviation of Error NO ENTry (or Error NO ENTity), and can actually be used for more than files/directories.
It's abbreviated because C compilers at the dawn of time didn't support more than 8 characters in symbols.
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RESTfully design /login or /register resources?
...d to think about how my api should be designed as a RESTful web service. For now, most of my URI's are generic and might apply to various web apps:
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Determine if two rectangles overlap each other?
... to the x and the y axis, that is all of their edges will have slopes of 0 or infinity.
23 Answers
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Section vs Article HTML5
... as HTML5 <section> s, but on further inspection it looks they the more correct tag would be <article> . Could anyone shed some light on this for me?
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Logic to test that 3 of 4 are True
...s to be true, it seems natural to me that the value 3 appears somewhere.
For instance, in C++:
if ((int)a + (int)b + (int)c + (int)d == 3)
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This is well defined in C++: the standard (§4.7/4) indicates that converting bool to int gives the expected values 0 or 1.
In Java and C#, you can ...