1.\" Copyright (c) 1980, 1990, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)head.1 8.1 (Berkeley) 6/6/93 33.\" 34.Dd June 6, 1993 35.Dt HEAD 1 36.Os BSD 3 37.Sh NAME 38.Nm head 39.Nd display first lines of a file 40.Sh SYNOPSIS 41.Nm head 42.Op Fl n Ar count 43.Op Fl c Ar bytes 44.Op Ar file ... 45.Sh DESCRIPTION 46This filter displays the first 47.Ar count 48lines or 49.Ar bytes 50of each of the specified files, or of the standard input if no 51files are specified. 52If 53.Ar count 54is omitted it defaults to 10. 55.Pp 56If more than a single file is specified, each file is preceded by a 57header consisting of the string 58.Dq ==> XXX <== 59where 60.Dq XXX 61is the name of the file. 62.Pp 63The 64.Nm head 65utility exits 0 on success, and >0 if an error occurs. 66.Sh SEE ALSO 67.Xr tail 1 68.Sh HISTORY 69The 70.Nm head 71command appeared in 72.Bx 3.0 . 73