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What is the common header format of Python files?
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sudo echo “something” >> /etc/privilegedFile doesn't work
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Use tee --append or tee -a.
echo 'deb blah ... blah' | sudo tee -a /etc/apt/sources.list
Make sure to avoid quotes inside quotes.
To avoid printing data back to the console, redirect the output to /dev/null.
echo 'deb blah ... blah' | sudo tee -a /etc/apt/sources.list > /dev/null
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What is the meaning of prepended double colon “::”?
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Noteworthy differences:
1) shells tend to use the first match using the ordering in PATH, whereas C++ gives a compiler error when you've been ambiguous.
2) In C++, names without any leading scope can be matched in the current namespace, while most UNIX shells only do that if you put . in the PAT...
Convert text into number in MySQL query
... (rows with the same name) but the column is sorted according do character order, i.e.
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How unique is UUID?
...ely generate a batch of 16,384 UUIDs within the span of a single "tick" in order to overflow the sequence number. I have seen this happen with an implementation that relied, naively, on a clock source that (1) had μs-level granularity, and (2) was not guaranteed to be monotonic (system clocks are ...
How do you run your own code alongside Tkinter's event loop?
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rsync copy over only certain types of files using include option
...*" --include="*.sh" "$from" "$to"
For rsync version 3.0.6 or higher, the order needs to be modified as follows (see comments):
rsync -zarv --include="*/" --include="*.sh" --exclude="*" "$from" "$to"
Adding the -m flag will avoid creating empty directory structures in the destination. Tested in ...
SQL Server 2008: How to query all databases sizes?
...er_files F
INNER JOIN sys.databases D ON D.database_id = F.database_id
ORDER BY SizeInBytes desc
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How to know when UITableView did scroll to bottom in iPhone
I would like to know when a UITableView did scroll to bottom in order to load and show more content, something like a delegate or something else to let the controller know when the table did scroll to bottom.
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MVC DateTime binding with incorrect date format
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When looking for the value to parse, the framework looks in a specific order namely:
RouteData (not shown above)
URI query string
Request form
Only the last of these will be culture aware however. There is a very good reason for this, from a localization perspective. Imagine ...