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Grep only the first match and stop
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-m 1 means return the first match in any given file. But it will still continue to search in other files. Also, if there are two or more matched in the same line, all of them will be displayed.
You can use head -1 to solve this...
Adding one day to a date
...24:00 date after adding one day SHOULD be rolled over to the next month: 1970-01-01 17:33:29
11 Answers
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Which is better, number(x) or parseFloat(x)?
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318
The difference between parseFloat and Number
parseFloat/parseInt is for parsing a string, whil...
What's the Best Way to Shuffle an NSMutableArray?
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12 Answers
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How to get the first line of a file in a bash script?
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416
head takes the first lines from a file, and the -n parameter can be used to specify how many li...
How to do exponential and logarithmic curve fitting in Python? I found only polynomial fitting
... = A + B log x, just fit y against (log x).
>>> x = numpy.array([1, 7, 20, 50, 79])
>>> y = numpy.array([10, 19, 30, 35, 51])
>>> numpy.polyfit(numpy.log(x), y, 1)
array([ 8.46295607, 6.61867463])
# y ≈ 8.46 log(x) + 6.62
For fitting y = AeBx, take the logarithm of...
What is the difference between HashSet and List?
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215
Unlike a List<> ...
A HashSet is a List with no duplicate members.
Because a HashSet is...
How to loop through all but the last item of a list?
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for x in y[:-1]
If y is a generator, then the above will not work.
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How to find the largest file in a directory and its subdirectories?
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15 Answers
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