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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...
How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
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12 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...
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...
What is the difference between HashSet and List?
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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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Most efficient way to prepend a value to an array
...more efficient way of prepending to the array that would not require O(N + 1) steps?
9 Answers
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Getting current date and time in JavaScript
...() returns a zero-based number so to get the correct month you need to add 1, so calling .getMonth() in may will return 4 and not 5.
So in your code we can use currentdate.getMonth()+1 to output the correct value. In addition:
.getDate() returns the day of the month <- this is the one you want...
How to find the largest file in a directory and its subdirectories?
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15 Answers
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