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How to delete duplicate lines in a file without sorting it in Unix?
...at seen[$0] == 1 after the first time a line is found and then seen[$0] == 2, and so on.
Awk evaluates everything but 0 and "" (empty string) to true. If a duplicate line is placed in seen then !seen[$0] will evaluate to false and the line will not be written to the output.
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Emacs - Multiple columns one buffer
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See follow-mode.
Excerpt:
Follow mode is a minor mode that makes two windows, both showing t...
How do you Encrypt and Decrypt a PHP String?
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When annotating a class with @Component, does this mean it is a Spring Bean and Singleton?
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How to hide databases that I am not allowed to access
...ku - Postgresql database via pgAdmin3 , It lists all the tables (about 2600). Every time I open the pgAdmin3 I have to find my own database.
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jQuery changing style of HTML element
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Use this:
$('#navigation ul li').css('display', 'inline-block');
Also, as others have state...
What is `params.require(:person).permit(:name, :age)` doing in Rails 4?
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How to multiply duration by integer?
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int32 and time.Duration are different types. You need to convert the int32 to a time.Duration, such as time.Sleep(time.Duration(rand...
Checkout one file from Subversion
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edited Aug 23 '15 at 20:14
Peter Mortensen
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How to detect if a property exists on an ExpandoObject?
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DykamDykam
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