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How do I kill background processes / jobs when my shell script exits?

I am looking for a way to clean up the mess when my top-level script exits. 13 Answers ...
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How to track child process using strace?

I used strace to attach to a process briefly. The process created 90 threads. When I found the offending thread, I had to tediously search for the parent thread, then the grandparent thread, and so on all the way to the root process. ...
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Ruby on Rails console is hanging when loading

...version you originally specified (which you know your app works in) at any time. – Ben Aubin Aug 4 '16 at 23:09 ...
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Compare two data.frames to find the rows in data.frame 1 that are not present in data.frame 2

... (say) it says out of memory with 32 GB RAM. 2) I also see HTML takes some time to write, can the same output be sent to TEXT file? – Deep Feb 13 '19 at 6:44 ...
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(grep) Regex to match non-ASCII characters?

On Linux, I have a directory with lots of files. Some of them have non-ASCII characters, but they are all valid UTF-8 . One program has a bug that prevents it working with non-ASCII filenames, and I have to find out how many are affected. I was going to do this with find and then do a grep to p...
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Check if string contains only whitespace

How can I test if a string contains only whitespace? 11 Answers 11 ...
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What's the difference between OpenID and OAuth?

...D does not require hard coding each the providers you want to use ahead of time. Using discovery, the user can choose any third-party provider they want to authenticate. This discovery feature has also caused most of OpenID's problems because the way it is implemented is by using HTTP URIs as identi...
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How do I include negative decimal numbers in this regular expression?

How do I match negative numbers as well by this regular expression? This regex works fine with positive values, but I want it to also allow negative values e.g. -10, -125.5 etc. ...
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Find all storage devices attached to a Linux machine [closed]

I have a need to find all of the writable storage devices attached to a given machine, whether or not they are mounted. 7...
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How do you serialize a model instance in Django?

There is a lot of documentation on how to serialize a Model QuerySet but how do you just serialize to JSON the fields of a Model Instance? ...