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How to track child process using strace?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Is there a way to make mv create the directory to be moved to if it doesn't exist?
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[ -a "$dir" ] ||
mkdir -p "$dir" &&
mv "$@"
}
These based on the submission of Chris Lutz.
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Search and replace a line in a file in Python
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Based on the answer by Thomas Watnedal.
However, this does not answer the line-to-line part of the original question exactly. The function can still replace on a line-to-line basis
This implementation replaces the file con...
Python - Get path of root project structure
...sh')
The output:
/home/sri/workspace/stackoverflow/resources/bands/Rush
Base: Geddy Lee
Vocals: Geddy Lee
Guitar: Alex Lifeson
Drums: Neil Peart
This works for all packages in your python path. So if you want to know where lxml.etree exists on your system:
import pkg_resources
if __name__ == ...
count number of lines in terminal output
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Difference between malloc and calloc?
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364
A less known difference is that in operating systems with optimistic memory allocation, like Li...
Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.
... inspired by this post.
https://github.com/appoxy/aws/blob/master/lib/awsbase/require_relative.rb
unless Kernel.respond_to?(:require_relative)
module Kernel
def require_relative(path)
require File.join(File.dirname(caller[0]), path.to_str)
end
end
end
This allows you to use re...
Filter rows which contain a certain string
...good things about Stringr
We should use rather stringr::str_detect() than base::grepl(). This is because there are the following reasons.
The functions provided by the stringr package start with the prefix str_, which makes the code easier to read.
The first argument of the functions of stringr p...
How to return a result (startActivityForResult) from a TabHost Activity?
...Once you get the result in Class B then set the result there (for Class A) based on the result from Class C. I haven't tried this out but I think this should work.
Another thing to look out for is that Activity A should not be a singleInstance activity. For startActivityForResult to work your Class...
How do I detect unsigned integer multiply overflow?
...nting mathematical positive integers, not positive integers mod 2^32 (or 2^64). The distinction between overflow as a deviation from mathematical infinite-sized integer behaviour, and overflow as an undefined behaviour in the language seems rarely to be made explicit.
– Chris J...