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How do I set a variable to the output of a command in Bash?
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Some Bash tricks I use to set variables from commands
Sorry, there is a loong answer, but there is more than one solution, shorter or quicker, more or less system friendly...
3rd Edit: 2020-09-05: About {fdname}<> syntax under bash See at top of...
Writing string to a file on a new line every time
I want to append a newline to my string every time I call file.write() . What's the easiest way to do this in Python?
10 A...
How to escape a JSON string containing newline characters using JavaScript?
I have to form a JSON string in which a value is having new line character. This has to be escaped and then posted using AJAX call. Can any one suggest a way to escape the string with JavaScript. I am not using jQuery.
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What are Aggregates and PODs and how/why are they special?
... implementations) a pointer to the so-called vtable of the class, which is set in the constructor, so brace-initialization would be insufficient. You could figure out the rest of the restrictions in a similar manner as an exercise :).
So enough about the aggregates. Now we can define a stricter set...
How to un-submodule a Git submodule?
...e Display verbose output"
}
function abort {
echo "$(tput setaf 1)$1$(tput sgr0)"
exit 1
}
function request_confirmation {
read -p "$(tput setaf 4)$1 (y/n) $(tput sgr0)"
[ "$REPLY" == "y" ] || abort "Aborted!"
}
function warn() {
cat << EOF
This script will...
Linux: compute a single hash for a given folder & contents?
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and don't forget to set LC_ALL=POSIX, so the various tools create locale independent output.
– David Schmitt
Feb 15 '09 at 12:28
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sprintf like functionality in Python
I would like to create a string buffer to do lots of processing, format and finally write the buffer in a text file using a C-style sprintf functionality in Python. Because of conditional statements, I can’t write them directly to the file.
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Git command to show which specific files are ignored by .gitignore
...' are comments.
# For a project mostly in C, the following would be a good set of
# exclude patterns (uncomment them if you want to use them):
# *.[oa]
# *~
So....
git ls-files --others --ignored --exclude-from=.git/info/exclude
git ls-files -o -i --exclude-from=.git/info/exclude
git ls-files --...
adding noise to a signal in python
... python, you can either
1. Calculate variance based on a desired SNR and a set of existing measurements, which would work if you expect your measurements to have fairly consistent amplitude values.
2. Alternatively, you could set noise power to a known level to match something like receiver noise. R...
How to determine the encoding of text?
I received some text that is encoded, but I don't know what charset was used. Is there a way to determine the encoding of a text file using Python? How can I detect the encoding/codepage of a text file deals with C#.
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