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How to preserve line breaks when storing a command output to a variable in bash?
...ield Separator (IFS), and passes that resulting list of arguments to echo. By default, the IFS is set to whitespace (spaces, tabs, and newlines), so the shell chops your $TEMP string into arguments and it never gets to see the newline, because the shell considers it a separator, just like a space.
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How do I assign a port mapping to an existing Docker container?
... something here, but it seems like it's only possible to set port mappings by creating a new container from an image. Is there a way to assign a port mapping to an existing Docker container?
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How to do a newline in output
...makes me look like a fool but atleast I now know
– babyrats
Jan 13 '10 at 21:18
77
don't be so ha...
How to reference a file for variables using Bash?
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Is there a way to use source by piping in the content rather than providing a file? Like some command | source does not work...
– Elliot Chance
Jul 28 '15 at 23:51
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Difference between ProcessBuilder and Runtime.exec()
...me().exec(...) does NOT invoke a shell unless that is explicitly specified by the command. That is a good thing regarding the recent "Shellshock" bug issue. This answer is misleading, because it states that cmd.exe or equivalent (i.e. /bin/bash on unix) would be run, which does not seem to be the ca...
How do I detect a click outside an element?
...ot of content or the screen is very high, it only works on the part filled by the body.
– meo
Feb 25 '11 at 15:35
103
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IE8 and JQuery's trim()
... text using jQuery:
/**
* Trim the site input[type=text] fields globally by removing any whitespace from the
* beginning and end of a string on input .blur()
*/
$('input[type=text]').blur(function(){
$(this).val($.trim($(this).val()));
});
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Execute Insert command and return inserted Id in Sql
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this shows an error "InValidCast Exception was unhandled by user code"
– neel
Aug 22 '13 at 7:04
2
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return statement vs exit() in main()
... C library - was designed to coordinate with and flush the former, but can bypass the latter: even Standard C++ fstream content is not flushed to disk (try it - I did, it fails w/ Linux/GCC), and obviously user-defined types that have buffered I/O can't be expected to flush either.
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What is the difference between syntax and semantics in programming languages?
...ement inside parentheses
group multiple statements into a single statement by enclosing in curly braces
data types and variables must be declared before the first executable statement (this feature has been dropped in C99. C99 and latter allow mixed type declarations.)
Semantics is about the meani...