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How do I kill background processes / jobs when my shell script exits?
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but can also be used to execute something if the shell exits:
trap "killall background" EXIT
It's a builtin, so help trap will give you information (works with bash). If you only want to kill background jobs, you can do
trap 'kill $(jobs -p)' EXIT
Watch out to use single ', to prevent the sh...
Parsing JSON with Unix tools
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There are a number of tools specifically designed for the purpose of manipulating JSON from the command line, and will be a lot easier and more reliable than doing it with Awk, such as jq:
curl -s 'https://api.github.com/users/lambda' | jq -r '.name'
You can...
How to remove all breakpoints in one step in Google Chrome?
How to remove all breakpoints in one step in Google Chrome? Using version 11.
8 Answers
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How to identify if a webpage is being loaded inside an iframe or directly into the browser window?
...embedded or cross-origin'
This is an HTML Standard with basic support in all modern browsers.
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Logback to log different messages to two files
...instances which each log to a separate file; one for analytics and one for all purpose logging. Does anyone know if this is possible with Logback, or any other logger for that matter?
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How to overcome root domain CNAME restrictions?
...ious they want to use their own domains to refer to those applications, usually they want that any user that either type http://www.customer1.example or http://customer1.example goes to their web application.
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How to duplicate virtualenv
...is to use pip to generate a requirements file. A requirements file is basically a file that contains a list of all the python packages you want to install (or have already installed in case of file generated by pip), and what versions they're at.
To generate a requirements file, go into your origin...
scipy.misc module has no attribute imread?
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You need to install Pillow (formerly PIL). From the docs on scipy.misc:
Note that Pillow is not a dependency of SciPy but the image manipulation functions indicated in the list below are not available without it:
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imread
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Replace String in all files in Eclipse
Do you know how can I search an replace a String in all files of my current project?
10 Answers
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Rails migration: t.references with alternative name?
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You can do this all in the initial migration/column definition (at least currently in Rails 5):
t.references :transferable_as, index: true, foreign_key: {to_table: :courses}
t.references :same_as, index: true, foreign_key: {to_table: :cours...