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Extract source code from .jar file

... Use JD GUI. Open the application, drag and drop your JAR file into it. share | improve this answer | follow | ...
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Turning multi-line string into single comma-separated

... You can use awk and sed: awk -vORS=, '{ print $2 }' file.txt | sed 's/,$/\n/' Or if you want to use a pipe: echo "data" | awk -vORS=, '{ print $2 }' | sed 's/,$/\n/' To break it down: awk is great at handling data broken down into fi...
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Is there a Unix utility to prepend timestamps to stdin?

... Could try using awk: <command> | awk '{ print strftime("%Y-%m-%d %H:%M:%S"), $0; fflush(); }' You may need to make sure that <command> produces line buffered output, i.e. it flushes its output stream after each line; the timestamp awk adds ...
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How to return 2 values from a Java method?

...sider creating a class that represents the result that you want to return, and return an instance of that class. Give the class a meaningful name. The benefits of this approach over using an array are type safety and it will make your program much easier to understand. Note: A generic Pair class, a...
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Replace only some groups with Regex

...er if will use them or not :). In my opinion, that solution is much better and cleaner than using lookahead and lookbehinds. – Oscar Mederos May 15 '11 at 4:04 ...
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What is the simplest SQL Query to find the second largest value?

... produce the correct second largest value while if you used the top 2 desc and min approach, you may get the largest value instead. – Pankaj Sharma Apr 1 '13 at 19:22 ...
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How to forward declare a C++ template class?

...n value } ... }; Note that the default is in the forward declaration and not in the actual definition. share | improve this answer | follow | ...
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What is the difference between a directory and a folder?

Most people use the terms "folder" and "directory" interchangeably. From a programmer point of view, is there a difference, and if so, what is it? Does it depend on the OS, or is there a broad, general consensus? This at least suggests that there is a difference. ...
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Least common multiple for 3 or more numbers

... Given a function f and a list l = [a,b,c,d], reduce(f,l) returns f(f(f(a,b),c),d). It's the functional implementation of "lcm can be computed by iteratively computing the lcm of the current value and the next element of the list." ...
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Create folder with batch but only if it doesn't already exist

... exist. Note that this existence test will return true only if VTS exists and is a directory. If it is not there, or is there as a file, the mkdir command will run, and should cause an error. You might want to check for whether VTS exists as a file as well. ...