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What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)

.... – Jonathan Leffler Aug 1 '13 at 4:03 7 Technically, $(echo foo) creates a command substitution,...
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Return Boolean Value on SQL Select Statement

...SELECT CASE WHEN EXISTS ( SELECT * FROM [User] WHERE UserID = 20070022 ) THEN CAST(1 AS BIT) ELSE CAST(0 AS BIT) END share | improve this answer | follow ...
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Converting of Uri to String

... Rico HarisinRico Harisin 3,02911 gold badge1111 silver badges77 bronze badges add a comm...
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How to get a specific output iterating a hash in Ruby?

... | answered Aug 4 '09 at 13:38 community wiki ...
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Convert String to Uri

... answered Aug 15 '10 at 12:48 cchenesonccheneson 45.3k88 gold badges5656 silver badges6767 bronze badges ...
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Printing everything except the first field with awk

...works but it will leave a leading space: awk '{first = $1; $1 = ""; print $0, first; }' You can also find the number of columns in NF and use that in a loop. share | improve this answer | ...
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What is the wix 'KeyPath' attribute?

... | edited Jan 5 '10 at 0:36 answered Jan 5 '10 at 0:29 ...
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z-index not working with position absolute

... 230 The second div is position: static (the default) so the z-index does not apply to it. You need ...
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Get last result in interactive Python shell

... Underscore. >>> 5+5 10 >>> _ 10 >>> _ + 5 15 >>> _ 15 share | improve this answer | follow ...
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How can I make setInterval also work when a tab is inactive in Chrome?

I have a setInterval running a piece of code 30 times a second. This works great, however when I select another tab (so that the tab with my code becomes inactive), the setInterval is set to an idle state for some reason. ...