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Дата изменения: Fri Jan 17 12:43:26 1997
Дата индексирования: Tue Oct 2 00:22:46 2012
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Поисковые слова: запрещенные спектральные линии
Searching the contents of a file

Searching the contents of a file

To search a text file for a string of characters or a regular expression use the command:

   grep pattern filename(s)

Using this command you can check to see if a text file holds specific information. grep is often used to search the output from a command.

Any regular expression containing one or more special characters must be quoted to remove their meaning.


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