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How do I set a variable to the output of a command in Bash?
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In addition to backticks `command`, command substitution can be done with $(command) or "$(command)", which I find easier to read, and allows for nesting.
OUTPUT=$(ls -1)
echo "${OUTPUT}"
MULTILINE=$(ls \
-1)
echo "${MULTILINE}"
Quoting (") does matter to preserve multi-line variabl...
How can I lock a file using java (if possible)
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this one looked good, but it doesn't work. I get the OverlappingFileLockException every time, even when the file didn't even exsist
– Gavriel
Feb 5 '15 at 10:11
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Embedding JavaScript engine into .NET [closed]
just wondering if anyone has ever tried embedding and actually integrating any js engine into the .net environment. I could find and actually use (after a LOT of pain and effort, since it's pretty outdated and not quite finished) spidermonkey-dotnet project. Anyone with experience in this area? En...
What is the best way to convert seconds into (Hour:Minutes:Seconds:Milliseconds) time?
...ou can then obtain the number of days, hours, minutes, or seconds. Or use one of the ToString overloads to output it in whatever manner you like.
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Renew Push certificate and keep current App Store App working
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The push certificate cannot be renewed. You have to create a new one.
The push notification certificate is not part of the application build. Therefore for push to continue working you only have to create a new certificate and deploy the p12 file (or whatever other format you are using) a...
an htop-like tool to display disk activity in linux [closed]
...sk IO activity. Something similar to htop would be really cool. Has someone heard of something like that?
4 Answers
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How to create a new database after initally installing oracle database 11g Express Edition?
... Apologies, I just noticed you were using XE. It only permits one instance, did it not prompt you to create the instance when you installed the software? You should have a database with the SID "XE" already created. You should have also set up your passwords for the SYS and SYSTEM users...
What are rvalues, lvalues, xvalues, glvalues, and prvalues?
...ue is
also a prvalue. —end example ]
Every
expression belongs to exactly one of
the fundamental classifications in
this taxonomy: lvalue, xvalue, or
prvalue. This property of an
expression is called its value
category. [ Note: The discussion of
each built-in operator in Clause 5
indicates the cate...
How should the ViewModel close the form?
... have hit a snag.
This question is similar but not quite the same as this one (handling-dialogs-in-wpf-with-mvvm) ...
26 A...
Get records with max value for each group of grouped SQL results
... and also the problems of returning multiple rows when there are more than one with the same maximum value (as the other answers would do)
Note: This is a mysql-only solution. All other databases I know will throw an SQL syntax error with the message "non aggregated columns are not listed in the gro...