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BSD 4.4 Lite Usr.bin Sources

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rgrimes 1994-05-27 12:33:43 +00:00
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.\" Copyright (c) 1990, 1993, 1994
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)file.1 8.2 (Berkeley) 3/31/94
.\"
.Dd March 31, 1994
.Dt FILE 1
.Os
.Sh NAME
.Nm file
.Nd identify file content
.Sh SYNOPSIS
.Nm file
.Op Fl h
.Ar file ...
.Sh DESCRIPTION
.Nm File
tests the specified files and attempts to classify them.
If a file is a text file,
it attempts to determine the type of text (e.g.
.Xr csh 1
commands or C source code).
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl h
If a symbolic link is specified, identify the file as a symbolic
link.
By default, symbolic links are only identified if they reference
non-existent files.
.El
.Sh COMPATIBILITY
Previous implementations of the
.Nm file
utility did not follow symbolic links by default.
.Sh BUGS
As many tests are used and
.Nm file
stops testing on the first successful one, it can often make mistakes.
.Sh HISTORY
A
.Nm file
command appeared in
.At v6 .