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UNIX in a Nutshell: System V Edition

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The Sed Editor
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q

[address]q

Quit when address is encountered. The addressed line is first written to output (if default output is not suppressed), along with any text appended to it by previous a or r commands.

Example

Delete everything after the addressed line:

/Garbled text follows:/q

Print only the first 50 lines of a file:

50q


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