|HEAD(1)||General Commands Manual||HEAD(1)|
headutility copies the first count lines of each specified file to the standard output. If no files are named,
headcopies lines from the standard input. If count is omitted, it defaults to 10.
The options are as follows:
If more than one file is specified,
precedes the output of each file with the following, in order to distinguish
the head of each file:
==> file <==
headutility exits 0 on success, and >0 if an error occurs.
$ head -500 foo
head can be used in conjunction with
tail(1) in the following way
to, for example, display only line 500 from the file
$ head -500 foo | tail -1
headutility is compliant with the IEEE Std 1003.1-2008 (“POSIX.1”) specification.
The historic command line syntax is supported by this implementation.
headutility first appeared in 1BSD. Bill Joy, August 24, 1977.
|December 28, 2011||OpenBSD-5.1|