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Checking if output of a command contains a certain string in a shell script

I'm writing a shell script, and I'm trying to check if the output of a command contains a certain string. I'm thinking I probably have to use grep, but I'm not sure how. Does anyone know? ...
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How to create abstract properties in python abstract classes

In the following code, I create a base abstract class Base . I want all the classes that inherit from Base to provide the name property, so I made this property an @abstractmethod . ...
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What does the tilde (~) mean in my composer.json file?

I have this line in my composer.json file: 3 Answers 3 ...
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Can anybody push to my project on github?

I am new to git as well as github. I set up a repo on github, and I can push local stuff to this remote repo. Now here is the question: just after I push something to the remote repo, and I refresh the page, I can see the changes are uploaded(for example, if I wrote a readme.txt and push it to the r...
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Selecting an element in iFrame jQuery

In our application, we parse a web page and load it into another page in an iFrame. All the elements in that loaded page have their tokenid-s. I need to select the elements by those tokenid-s. Means - I click on an element on the main page and select corresponding element in the page in the iFrame. ...
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MySQL ON DUPLICATE KEY UPDATE for multiple rows insert in single query

I have a SQL query where I want to insert multiple rows in single query. so I used something like: 3 Answers ...
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Mocking objects with Moq when constructor has parameters

I have an object I'm trying to mock using moq. The object's constructor has required parameters: 2 Answers ...
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Using SignalR with Redis messagebus failover using BookSleeve's ConnectionUtils.Connect()

I am trying to create a Redis message bus failover scenario with a SignalR app. 1 Answer ...
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Java “user.dir” property - what exactly does it mean?

I want to use user.dir dir as a base dir for my unit tests (that creates a lot of files). Is it correct that this property points to the current working directory (e.g. set by the 'cd' command)? ...
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“Ago” date/time functions in Ruby/Rails

I was wondering if there's a way in Rails to calculate time stamp like - half a minute ago, 2 minute ago, 1 day ago etc. Something like twitter real time date stamp. ...