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How do I programmatically change file permissions?

In Java, I'm dynamically creating a set of files and I'd like to change the file permissions on these files on a linux/unix file system. I'd like to be able to execute the Java equivalent of chmod . Is that possible Java 5? If so, how? ...
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What is AppDomain? [duplicate]

... @AgentFire: If some code running in some thread and some AppDomain calls code from another AppDomain, then the thread "crosses" the AppDomain border and runs code from that other AppDomain. So threads do not belong to specific AppDomains...although one can say that a threa...
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How does Rails keep track of which migrations have run for a database?

...runs a migration, it takes the leading digits in the migration's file name and inserts a row for that "version", indicating it has been run. If you roll back that migration, Rails will delete the corresponding row from schema_migrations. For example, running a migration file named 20120620193144_cr...
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What strategies and tools are useful for finding memory leaks in .NET?

...when I suspect a memory leak. So far, I have found it to be very reliable and powerful. It has saved my bacon on at least one occasion. The GC works very well in .NET IMO, but just like any other language or platform, if you write bad code, bad things happen. ...
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How to check if a file contains a specific string using Bash

...ns # SomeString was found fi You don't need [[ ]] here. Just run the command directly. Add -q option when you don't need the string displayed when it was found. The grep command returns 0 or 1 in the exit code depending on the result of search. 0 if something was found; 1 otherwise. $ echo hello...
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Razor doesn't understand unclosed html tags

... @Stuntman you need to do this for both the opening and the closing tags to make it work. – Departamento B Jun 6 '16 at 14:05 ...
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How can I check for an empty/undefined/null string in JavaScript?

... tools, testing === '' vs .length didn't show any discernible improvement (and using .length only works if you can assume that you have a string) – bdukes Sep 27 '10 at 13:19 27 ...
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Access-Control-Allow-Origin Multiple Origin Domains?

...m the client, compare that to the list of domains you would like to allow, and if it matches, echo the value of the Origin header back to the client as the Access-Control-Allow-Origin header in the response. With .htaccess you can do it like this: # ------------------------------------------------...
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Package objects

...write import swing._ import Swing._ to have all the goodness like onEDT and implicit conversions from Tuple2 to Dimension. share | improve this answer | follow ...
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What command opens Ruby's REPL?

What command opens Ruby's REPL? 2 Answers 2 ...