head linux command

head

head [options] [files]

Print the first few lines (default is 10) of one or more files. If files is missing or -, read from standard input. With more than one file, print a header for each file.

Options

-c num[bkm], --bytes num

Print first num bytes or, if num is followed by b, k, or m, first num 512-byte blocks, 1-kilobyte blocks, or 1-megabyte blocks.

--help

Display help and then exit.

-n num, --lines num num

Print first num lines. Default is 10.

-q, --quiet, --silent

Quiet mode; never print headers giving filenames.

-v, --verbose

Print filename headers, even for only one file.

--version

Output version information and then exit.

Examples

Display the first 20 lines of phone_list:

Display the first 10 phone numbers having a 202 area code: