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Shell - How to find directory of some command?

I know that when you are on shell, the only commands that can be used are the ones that can be found on some directory set on PATH. Even I don't know how to see what dirs are on my PATH variable (and this is another good question that could be answered), what I'd like to know is: ...
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Changing the Git remote 'push to' default

... tried git branch --set-upstream-to myfork and got an error: >error: unknown option `set-upstream-to' I'm running git 1.7.9 – alonisser Sep 15 '13 at 21:17 ...
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“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP

...e']) ? $_POST['value'] : ''; This has become much cleaner as of PHP 7.0, now you can use the null coalesce operator: // Null coalesce operator - No need to explicitly initialize the variable. $value = $_POST['value'] ?? ''; Set a custom error handler for E_NOTICE and redirect the messages away f...
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Converting .NET DateTime to JSON [duplicate]

...r, that's fine too, but if that means you're doing substring + validation, now you're into multiple lines of code (hopefully in a separate function) which means more things that can go wrong and more programmer time spent (programmers being more expensive than CPUs). – gregmac ...
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Using Sinatra for larger projects via multiple files

...g Thin, you run an app like this using: thin -R config.ru start Edit: I'm now maintaining my own Monk skeleton based on the below called Riblits. To use it to copy my template as the basis for your own projects: # Before creating your project monk add riblits git://github.com/Phrogz/riblits.git #...
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Git - What is the difference between push.default “matching” and “simple”

I have been using git for a while now, but I have never had to set up a new remote repo myself and I have been curious on doing so. I have been reading tutorials and I am confused on how to get "git push" to work. ...
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How to debug .htaccess RewriteRule not working

...og and RewriteLogLevel directives have been removed. This functionality is now provided by configuring the appropriate level of logging for the mod_rewrite module using the LogLevel directive. See also the mod_rewrite logging section. For more on LogLevel, refer LogLevel Directive you can accompl...
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Android studio logcat nothing to show

...0.8.14. Reinstalling it did nothing, going to try the SDK and config files now. – G_V Nov 19 '14 at 9:53 2 ...
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How can I distinguish whether Switch,Checkbox Value is changed by user or programmatically (includin

...)v).isChecked(); setSomeBoolean(checked); } }); Now you only pick up click events and don't have to worry about programmatic changes. Answer 1: I have created a wrapper class (see Decorator Pattern) which handles this problem in an encapsulated way: public class Bette...
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Using global variables in a function

...bal variables are so dangerous, Python wants to make sure that you really know that's what you're playing with by explicitly requiring the global keyword. See other answers if you want to share a global variable across modules. ...