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How can you run a command in bash over until success

I have a script and want to ask the user for some information, the script cannot continue until the user fills in this information. The following is my attempt at putting a command into a loop to achieve this but it doesn't work for some reason. ...
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How can I expand and collapse a using javascript?

...you've got two options here : Use jQuery UI's accordion - its nice, easy and fast. See more info here Or, if you still wanna do this by yourself, you could remove the fieldset (its not semantically right to use it for this anyway) and create a structure by yourself. Here's how you do that. Creat...
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Guava equivalent for IOUtils.toString(InputStream)

... Does not close the Readable. This means that your InputStreamReader, and by extension the InputStream returned by supplier.get(), will not be closed after this code completes. If, on the other hand, you take advantage of the fact that you appear to already have an InputSupplier<InputStream...
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How do you performance test JavaScript code?

...e user/client. For example, we had a project with an Ext accordion that expanded to show some data and then a few nested Ext grids. Everything was actually rendering pretty fast, no single operation took a long time, there was just a lot of information being rendered all at once, so it felt slow to...
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When should I use mmap for file access?

... environments provide at least two ways of accessing files. There's the standard system calls open() , read() , write() , and friends, but there's also the option of using mmap() to map the file into virtual memory. ...
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Adding :default => true to boolean in existing Rails column

... that you would have to create a rake task or just go in the rails console and update all the records (which I would not recommend in production). When you added t.boolean :show_attribute, :default => true to the create_profiles migration, it's expected that it didn't do anything. Only migrations...
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How to activate JMX on my JVM for access with jconsole?

...of course, I also tried to add Dcom.sun.management.jmxremote.rmi.port=9011 and open in firewall - still cant connect with the firewall being up. Any thoughts? Have I missed anything? – Carmageddon Dec 6 '18 at 15:05 ...
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How to set cornerRadius for only top-left and top-right corner of a UIView?

Is there a way to set cornerRadius for only top-left and top-right corner of a UIView ? 25 Answers ...
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onMeasure custom view explanation

I tried to do custom component. I extended View class and do some drawing in onDraw overrided method. Why I need to override onMeasure ? If I didn't, everything seen to be right. May someone explain it? How should I write my onMeasure method? I've seen couple tutorials, but each one is a litt...
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Test if a command outputs an empty string

How can I test if a command outputs an empty string? 11 Answers 11 ...