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UNIX export command [closed]
...ts environment variables from the parent. For instance if $HOME is set to /root in the parent then the child's $HOME variable is also set to /root.
This only applies to environment variable that are marked for export. If you set a variable at the command-line like
$ FOO="bar"
That variable will ...
Swift native base class or NSObject
...ge reference, there is no requirement for classes to subclass any standard root class, so you can include or omit a superclass as needed.
Note that omitting a superclass from the class declaration, doesn't assign a implicit base superclass of any kind. It defines a base class, which will effectivel...
What is the equivalent of 'describe table' in SQL Server?
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I like this because it works on MySQL too, so I don't have to change my SQL in my code
– Abdul
Sep 1 '15 at 2:14
1
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Allow user to set up an SSH tunnel, but nothing else
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?? @DanFarrell would the .ssh/authorized_keys be owned by root, or wheel, or whom?
– Andrew Wolfe
Nov 23 '15 at 14:35
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Android - Writing a custom (compound) component
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Use merge tag as your XML root
<merge xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Your Layout -->
</merge>
Check this article.
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Bash script error [: !=: unary operator expected
...ef | grep -v '\['`"
else
echo "`ps -ef | grep '\[' | grep root`"
fi;;
*) echo "usage: $0 [-v]"
exit 1;; #It is good practice to throw a code, hence allowing $? check
esac
If one cares not where the '-v' arg is, then simply drop the case inside a loop. The woul...
What's “tools:context” in Android layout files?
...name attribute. It prepends the package declaration from the manifest file root element, if necessary.
– Tor Norbye
Jun 20 '12 at 14:31
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ExecJS::RuntimeError on Windows trying to follow rubytutorial
... 2 was the accepted solution before actually finding information about the root issue we were having. The only reason we kept looking was that we couldn't believe the Rails team would (1) insert a line of code in every scaffold generated project that caused an issue, or (2) require that we install ...
Modify table: How to change 'Allow Nulls' attribute from not null to allow null
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For MySQL, MariaDB
ALTER TABLE [table name] MODIFY COLUMN [column name] [data type] NULL
Use MODIFY COLUMN instead of ALTER COLUMN.
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Role/Purpose of ContextLoaderListener in Spring?
...ed when we are initializing multiple Dispatcher servlets and still want a Root context to be shared by all DispaterServlets own context then we need to use ContextLoaderListener.
– supernova
Jan 7 '18 at 9:01
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