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Is there a Unix utility to prepend timestamps to stdin?

I ended up writing a quick little script for this in Python, but I was wondering if there was a utility you could feed text into which would prepend each line with some text -- in my specific case, a timestamp. Ideally, the use would be something like: ...
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Serializing class instance to JSON

I am trying to create a JSON string representation of a class instance and having difficulty. Let's say the class is built like this: ...
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ArrayIndexOutOfBoundsException when using the ArrayList's iterator

Right now, I have a program containing a piece of code that looks like this: 8 Answers ...
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How to execute an .SQL script file using c#

I'm sure this question has been answered already, however I was unable to find an answer using the search tool. 10 Answers ...
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Value of i for (i == -i && i != 0) to return true in Java

... 6 Answers 6 Active ...
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Python regex find all overlapping matches?

I'm trying to find every 10 digit series of numbers within a larger series of numbers using re in Python 2.6. 3 Answers ...
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Downcasting in Java

Upcasting is allowed in Java, however downcasting gives a compile error. 11 Answers 1...
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Formatting Phone Numbers in PHP

I am working on an SMS app and need to be able to convert the sender's phone number from +11234567890 to 123-456-7890 so it can be compared to records in a MySQL database . ...
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Linux - Replacing spaces in the file names

I have a number of files in a folder, and I want to replace every space character in all file names with underscores. How can I achieve this? ...
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How can I delete the current line in Emacs?

What is the emacs equivalent of vi's dd ? I want to delete the current line. Tried CTRL + k but it only deletes from current position. ...