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D

[address1 [, address2 ]]D

Delete first part (up to embedded newline) of multiline pattern space created by N command and resume editing with first command in script. If this command empties the pattern space, a new line of input is read, as if the d command had been executed.

Example

# Strip multiple blank lines, leaving only one:
/^$/{
N
/^\n$/D
}


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