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Grep only the first match and stop
...any given file. But it will still continue to search in other files. Also, if there are two or more matched in the same line, all of them will be displayed.
You can use head -1 to solve this problem:
grep -o -a -m 1 -h -r "Pulsanti Operietur" /path/to/dir | head -1
explanation of each grep optio...
How to make input type= file Should accept only pdf and xls
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if you list all files on selection box. you can still uploading any file.
– rüff0
Jan 5 '19 at 15:35
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Is there a way to make AngularJS load partials in the beginning and not at when needed?
...ateCache (http://docs.angularjs.org/api/ng.$templateCache) from JavaScript if needed (possibly based on result of $http call)
If you would like to use method (2) to fill in $templateCache you can do it like this:
$templateCache.put('second.html', '<b>Second</b> template');
Of course...
Environment variable substitution in sed
If I run these commands from a script:
10 Answers
10
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Qt: How do I handle the event of the user pressing the 'X' (close) button?
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If you have a QMainWindow you can override closeEvent method.
#include <QCloseEvent>
void MainWindow::closeEvent (QCloseEvent *event)
{
QMessageBox::StandardButton resBtn = QMessageBox::question( this, APP_NAME,
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Why do we need the “event” keyword while defining events?
...s and public fields of delegate types look similar, but are actually very different.
An event is fundamentally like a property - it's a pair of add/remove methods (instead of the get/set of a property). When you declare a field-like event (i.e. one where you don't specify the add/remove bits yourse...
detach all packages while working in R
... value present. One can test for this with names(sessionInfo()$otherPkgs). If it returns NULL, then this is the cause.
– mmfrgmpds
Sep 20 '19 at 16:31
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How to calculate date difference in JavaScript?
I want to calculate date difference in days, hours, minutes, seconds, milliseconds, nanoseconds. How can I do it?
18 Answer...
Where is array's length property defined?
...in the array whereas myArray.length ([]) provides the "capacity". That is, if for myArray = new int[10];, it returns 10. It is not the number of objects you've put in the array.
– wmorrison365
Feb 16 '12 at 13:15
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What is sys.maxint in Python 3?
...As pointed out by others, Python 3's int does not have a maximum size, but if you just need something that's guaranteed to be higher than any other int value, then you can use the float value for Infinity, which you can get with float("inf").
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