The C shell (csh), once one of the two major Unix shells with the Bourne shell. Csh had more advanced interactive feature but has been surpassed by modern Bourne-style shells such as zsh and bash.

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How can I clear portion of what is typed into the prompt while working on Linux and using C-shell?

I am working in Linux and C-shell. Often times I would require to change some portion of what is there already in the prompt that I obtain from reverse searching through the history command by use of ...
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“~/” receives a permission denied error in Csh

Running in Csh when using Tilde Notation performing a ~/ at the command line, I receive a "Permission denied." error. This directory is owned by the user performing the command and has the ...
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sed command to replace a blank line with two lines of content

How do I replace the first blank line with two lines of content? I did see a question on replacing multiple blank lines with a single blank line in vim sed but don't quite see how to adapt that. So, ...