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Extract substring using regexp in plain bash
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Using pure bash :
$ cat file.txt
US/Central - 10:26 PM (CST)
$ while read a b time x; do [[ $b == - ]] && echo $time; done < file.txt
another solution with bash regex :
$ [[ "US/Central - 10:26 PM (CST)" =~ -[[:space:]]*([0-9]{2}:[...
Grepping a huge file (80GB) any way to speed it up?
...ise not overloaded.
Any alternative to grep? Anything about my syntax that can be improved, (egrep,fgrep better?)
5 Answer...
How to change field name in Django REST Framework
...me in DRF Serializer like alias in SQL. I have tried different methods but cannot succeed.
3 Answers
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.NET 4.0 build issues on CI server
Anybody manage to get .NET 4.0 applications compiling on a CI server without installing Visual Studio 2010 on a CI server?
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Yes/No message box using QMessageBox
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You would use QMessageBox::question for that.
Example in a hypothetical widget's slot:
#include <QApplication>
#include <QMessageBox>
#include <QDebug>
// ...
void MyWidget::someSlot() {
QMessageBox::StandardButton reply;
reply = QMessageBox::question(this, "Test", "Q...
How do I break out of a loop in Perl?
...y had the while loop in it, and assuming you were just feeding given some scalar variable... but why do all that work just to use a break, it is (very) bad form, not to mention (blah!)just saying, its "possible" just not a good idea & not what you may think it is
– osirisgo...
LINQ - Left Join, Group By, and Count
...re not null. Maybe I don't get your question, please clarify if that's the case.
– Mehrdad Afshari
Mar 29 '09 at 22:38
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Getting “A potentially dangerous Request.Path value was detected from the client (&)”
...ity issue; it depends on what you do with it. If the input is taken and escaped and included with the output it will be fine. If it isn't escaped, then you might open yourself up to an attack.
– Justin Helgerson
Jun 3 '13 at 13:52
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git pull keeping local changes
How can I safely update (pull) a git project, keeping specific files untouched, even if there's upstream changes?
6 Answers...
What is causing ERROR: there is no unique constraint matching given keys for referenced table?
...g given keys for referenced table, and having stared at it for while now I can't figure out why this error arises in this situation.
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