sed replace

Q. I need to delete all empty lines but could not figure out sed command for the same? How do I delete all empty lines with sed? A. sed is a stream editor and perfect for these kind of work. You need to use d command under sed which is act as the delete function. […]

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How do I remove all spaces from string using shell scripts? I’ve var=”This is a test”, and I’d like to remove all spaces.

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