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Simulate delayed and dropped packets on Linux

... netem leverages functionality already built into Linux and userspace utilities to simulate networks. This is actually what Mark's answer refers to, by a different name. The examples on their homepage already show how you can achieve what you've aske...
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Bash empty array expansion with `set -u`

I'm writing a bash script which has set -u , and I have a problem with empty array expansion: bash appears to treat an empty array as an unset variable during expansion: ...
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Measuring function execution time in R

...en <- end.time - start.time time.taken Not the most elegant way to do it, compared to the answere above , but definitely a way to do it. share | improve this answer | fo...
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What is the difference between sed and awk? [closed]

... sed is a stream editor. It works with streams of characters on a per-line basis. It has a primitive programming language that includes goto-style loops and simple conditionals (in addition to pattern matching and address matching). There are e...
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How to generate a random number between a and b in Ruby?

...ction-and-changes-5428.html Converting to array may be too expensive, and it's unnecessary. (a..b).to_a.sample Or [*a..b].sample Array#sample Standard in Ruby 1.8.7+. Note: was named #choice in 1.8.7 and renamed in later versions. But anyway, generating array need resources, and solutio...
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Unable to load Private Key. (PEM routines:PEM_read_bio:no start line:pem_lib.c:648:Expecting: ANY PR

... Open the key file in Notepad++ and verify the encoding. If it says UTF-8-BOM then change it to UTF-8. Save the file and try again. share | improve this answer | ...
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What function is to replace a substring from a string in C?

... ) string, I want to find all occurrences of a substring and replace them with an alternate string. I do not see any simple function that achieves this in <string.h> . ...
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Bootstrap select dropdown list placeholder

I am trying to make a dropdown list that contains a placeholder. It doesn't seem to support placeholder="stuff" as other forms do. Is there a different way to obtain a placeholder in my dropdown? ...
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How to do a non-greedy match in grep?

...follow | edited Feb 4 '13 at 13:02 answered Jun 12 '10 at 4:47 ...
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How do I capitalize first letter of first name and last name in C#?

Is there an easy way to capitalize the first letter of a string and lower the rest of it? Is there a built in method or do I need to make my own? ...