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How can I remove the first line of a text file using bash/sed script?
...give you the last 5 lines of the input. The + sign kind of inverts the argument and make tail print anything but the first x-1 lines. tail -n +1 would print the whole file, tail -n +2 everything but the first line, etc.
GNU tail is much faster than sed. tail is also available on BSD and the -n +2 f...
Margin-Top push outer div down
I have a header div as the first element in my wrapper div, but when I add a top margin to a h1 inside the header div it pushes the entire header div down. I realize this happens whenever I apply a top margin to the first visible element on a page.
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Why is iterating through a large Django QuerySet consuming massive amounts of memory?
...on. A QuerySet is iterable, and it executes its database query the first time you iterate over it. For example, this will print the headline of all entries in the database:
for e in Entry.objects.all():
print e.headline
So your ten million rows are retrieved, all at once, when you first e...
How to set data attributes in HTML elements
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Demo
Reference
From the reference:
jQuery itself uses the .data() method to save information under the names 'events' and 'handle', and also reserves any data name starting with an underscore ('_') for internal use.
It should be noted that jQuery's data() doesn't change the data attribute...
How to convert a LocalDate to an Instant?
I work with the new DateTime API of Java 8.
2 Answers
2
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How does the Comma Operator work
...would be equal to b.
The comma operator has a lower precedence than assignment.
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Explanation of BASE terminology
...ter system cannot guarantee all of the following three properties at the same time:
Consistency
Availability
Partition tolerance
A BASE system gives up on consistency.
Basically available indicates that the system does guarantee availability, in terms of the CAP theorem.
Soft state indicates t...
Difference between UIViewContentModeScaleAspectFit and UIViewContentModeScaleToFill?
...deScaleAspectFill
Scales the content to fill the size of the view. Some portion of the content may be clipped to fill the view’s bounds.
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How can I replace every occurrence of a String in a file with PowerShell?
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Thanks - I get an error "replace : Method invocation failed because [System.Object[]] doesn't contain a method named 'replace'." though?
– amateur
Jun 17 '13 at 9:42
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How to link to specific line number on github
...browser's URL looks like this:
https://github.com/git/git/blob/master/README#L18
If you want multiple lines selected, simply hold down the shift key and click a second line number, like line 20. Looks like this:
And now your browser's URL looks like this:
https://github.com/git/git/blob/maste...