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UNIX in a Nutshell: System V Edition

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UNIX Commands
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head [-n] [files]

Print the first few lines of one or more files. Use -n to print the first n lines (default is 10).


Display the first 20 lines of phone_list:

head -20 phone_list

Display the first ten phone numbers having a 202 area code:

grep '(202)' phone_list | head

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