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How do I rename the extension for a bunch of files?

...ternal calls), see one of the other answers. The following would do and does not require the system to have the rename program (although you would most often have this on a system): for file in *.html; do mv "$file" "$(basename "$file" .html).txt" done EDIT: As pointed out in the comments,...
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What is the “continue” keyword and how does it work in Java?

... the first time and I was wondering if someone could explain to me what it does. 13 Answers ...
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Git: Create a branch from unstaged/uncommitted changes on master

... No need to stash. git checkout -b new_branch_name does not touch your local changes. It just creates the branch from the current HEAD and sets the HEAD there. So I guess that's what you want. --- Edit to explain the result of checkout master --- Are you confused because ch...
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What does a \ (backslash) do in PHP (5.3+)?

What does a \ do in PHP? 4 Answers 4 ...
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What does LINQ return when the results are empty

... Where does the question mention a database? – cja Nov 14 '13 at 10:00 6 ...
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How does the NSAutoreleasePool autorelease pool work?

...n object should be an object that is a subclass of NSObject or NSProxy and doesn't override -autorelease. – user142019 Apr 23 '11 at 11:18 1 ...
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Why does “split” on an empty string return a non-empty array?

...lit the string by delimiter. The natural consequence is that if the string does not contain the delimiter, a singleton array containing just the input string is returned, Second, remove all the rightmost empty strings. This is the reason ",,,".split(",") returns empty array. According to this, the...
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Does pandas iterrows have performance issues?

... executed in Python space, and consequently is much slower. 4) itertuples does not box the data into a Series. It just returns the data in the form of tuples. 5) iterrows DOES box the data into a Series. Unless you really need this, use another method. 6) Updating an empty frame a-single-row-at-a...
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In MySQL what does “Overhead” mean, what is bad about it, and how to fix it?

...le (as if when just restored from backup). For performance reasons, MySQL does not compact the datafiles after it deletes or updates rows. This overhead is bad for table scan, i. e. when your query needs to run over all table values, it will need to look at more empty space. You may get rid of th...
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ORA-12514 TNS:listener does not currently know of service requested in connect descriptor

... ORA-00942: table or view does not exist – Tommy Holman Jan 16 '18 at 20:37  |  show 4 more c...