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+.\" Copyright (c) 1980, 1990 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.
+.\"
+.\" @(#)whereis.1 from UCB 4.2
+.TH WHEREIS 1 "October 2014" "util-linux" "User Commands"
+.SH NAME
+whereis \- locate the binary, source, and manual page files for a command
+.SH SYNOPSIS
+.B whereis
+[options]
+.RB [ \-BMS
+.IR directory "... " \fB\-f\fR ]
+.IR name ...
+.SH DESCRIPTION
+.B whereis
+locates the binary, source and manual files for the specified command names.
+The supplied names are first stripped of leading pathname components and any
+(single) trailing extension of the form
+.BI . ext
+(for example:
+.BR .c )
+Prefixes of
+.B s.
+resulting from use of source code control are also dealt with.
+.B whereis
+then attempts to locate the desired program in the standard Linux places, and
+in the places specified by
+.B $PATH
+and
+.BR $MANPATH .
+.sp
+The search restrictions (options \fB\-b\fP, \fB\-m\fP and \fB\-s\fP)
+are cumulative and apply to the subsequent \fIname\fP patterns on
+the command line.  Any new search restriction resets the search mask.
+For example,
+.RS
+.sp
+.B "whereis \-bm ls tr \-m gcc"
+.sp
+.RE
+searches for "ls" and "tr" binaries and man pages, and for "gcc" man pages only.
+.sp
+The options \fB\-B\fP, \fB\-M\fP and \fB\-S\fP reset search paths for the
+subsequent \fIname\fP patterns.  For example,
+.RS
+.sp
+.B "whereis \-m ls \-M /usr/share/man/man1 \-f cal"
+.sp
+.RE
+searches for "ls" man pages in all default paths, but for "cal" in
+the /usr/share/man/man1 directory only.
+
+.SH OPTIONS
+.IP \fB\-b\fP
+Search for binaries.
+.IP \fB\-m\fP
+Search for manuals.
+.IP \fB\-s\fP
+Search for sources.
+.IP \fB\-u\fP
+Only show the command names that have unusual entries.  A command is said to be
+unusual if it does not have just one entry of each explicitly requested type.
+Thus
+.RB ' "whereis \-m \-u *" '
+asks for those files in the current directory which have no documentation file,
+or more than one.
+.IP "\fB\-B \fIlist\fP"
+Limit the places where
+.B whereis
+searches for binaries, by a whitespace-separated list of directories.
+.IP "\fB\-M \fIlist\fP"
+Limit the places where
+.B whereis
+searches for manuals and documentation in Info format, by a
+whitespace-separated list of directories.
+.IP "\fB\-S \fIlist\fP"
+Limit the places where
+.B whereis
+searches for sources, by a whitespace-separated list of directories.
+.IP "\fB\-f\fP"
+Terminates the directory list and signals the start of filenames.  It
+.I must
+be used when any of the
+.BR \-B ,
+.BR \-M ,
+or
+.B \-S
+options is used.
+.IP "\fB\-l"
+Output the list of effective lookup paths that
+.B whereis
+is using.  When none of
+.BR \-B ,
+.BR \-M ,
+or
+.B \-S
+is specified, the option will output the hard-coded paths
+that the command was able to find on the system.
+.TP
+\fB\-h\fR, \fB\-\-help\fR
+Display help text and exit.
+.TP
+\fB\-V\fR, \fB\-\-version\fR
+Display version information and exit.
+.SH FILE SEARCH PATHS
+By default
+.B whereis
+tries to find files from hard-coded paths, which are defined with glob
+patterns.  The command attempts to use the contents of
+.B $PATH
+and
+.B $MANPATH
+environment variables as default search path.  The easiest way to know
+what paths are in use is to add the
+.B \-l
+listing option.  Effects of the
+.BR \-B ,
+.BR \-M ,
+and
+.B \-S
+are displayed with
+.BR \-l .
+.SH ENVIRONMENT
+.IP WHEREIS_DEBUG=all
+enables debug output.
+.SH EXAMPLES
+To find all files in
+.I /usr/\:bin
+which are not documented
+in
+.I /usr/\:man/\:man1
+or have no source in
+.IR /usr/\:src :
+.IP
+.B cd /usr/bin
+.br
+.B whereis \-u \-ms \-M /usr/man/man1 \-S /usr/src \-f *
+.SH AVAILABILITY
+The whereis command is part of the util-linux package and is available from
+.UR https://\:www.kernel.org\:/pub\:/linux\:/utils\:/util-linux/
+Linux Kernel Archive
+.UE .