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How to ignore xargs commands if stdin input is empty?
...s /empty_dir/ | xargs -i cp {} {}.bak # every {} is replaced with the args from one input line
ls /empty_dir/ | xargs -I ARG cp ARG ARG.bak # like -i, with a user-specified placeholder
Keep in mind that xargs splits the line at whitespace but quoting and escaping are available; RTFM for details.
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How to create a file in memory for user to download, but not through server?
...anchor to body.
document.body.appendChild(a);
a.click();
// Remove anchor from body
document.body.removeChild(a);
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Git Blame Commit Statistics
...ic of how much lines (of code) are currently in the repository originating from each committer?
13 Answers
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Spring Data: “delete by” is supported?
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When you go with query by method (2nd way) it will first do a get call
select * from user where last_name = :firstName
Then it will load it in a List
Then it will call delete id one by one
delete from user where id = 18
delete from user where id = 19
First fetch list of object, then for loo...
Why can't my program compile under Windows 7 in French? [closed]
...ion is hard.
You didn't mention which variant of French you're using, but from the error message, I think you're using “French (France)” (what we users of civilized OSes call fr_FR). MS's fr_FR locale behaves in a very weird way: uppercase accented letters are mapped to their unaccented counter...
How do I obtain crash-data from my Android application?
How can I get crash data (stack traces at least) from my Android application? At least when working on my own device being retrieved by cable, but ideally from any instance of my application running on the wild so that I can improve it and make it more solid.
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How to use Regular Expressions (Regex) in Microsoft Excel both in-cell and loops
...tep 1: Add VBA reference to "Microsoft VBScript Regular Expressions 5.5"
Select "Developer" tab (I don't have this tab what do I do?)
Select "Visual Basic" icon from 'Code' ribbon section
In "Microsoft Visual Basic for Applications" window select "Tools" from the top menu.
Select "References"
Chec...
iOS 7 style Blur view
... the complete replication of the blur size in iOS 7's control center view. From that, I created the GPUImageiOS7BlurFilter class that encapsulates the proper blur size and color correction that Apple appears to be using here. This is how GPUImage's blur (on the right) compares to the built-in blur (...
Internet Explorer 8 Developer Tools not displaying
... You
should get a window floating at the edge of the screen. Type M to
select Move, then press an arrow key to enter Move mode.
Additional remark by @WebSolProv:
It would appear that something happens with IE that causes the developer tools window to be shrunk to the height of the header b...
Form inline inside a form horizontal in twitter bootstrap?
...abel class="control-label">Date of birth:</label>
<div>
<select class="form-control form-control-inline" name="year"> ... </select>
<select class="form-control form-control-inline" name="month"> ... </select>
<select class="form-control form-control-inline" ...