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WHEREIS(1) User Commands WHEREIS(1)
NAME
whereis - locate the binary, source, and manual page files for a command
SYNOPSIS
whereis [options] [-BMS directory... -f] name...
DESCRIPTION
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 .ext (for example: .c) Prefixes of s. resulting from use of source
code control are also dealt with. whereis then attempts to locate the desired program in
the standard Linux places, and in the places specified by $PATH and $MANPATH.
The search restrinctions (options -b, -m and -s) are cumulative and always applied for the
next name patterns specified on command line. The first search restrinction resets the
search mask. For example
whereis -bm ls tr -m gcc
searchs for "ls" and "tr" binaries and man pages, and "gcc" man pages only.
The options -B, -M and -S resets search paths for the next name patterns. For example
whereis -m ls -M /usr/share/man/man1 -f cal
searchs for "ls" man pages in all default paths, but for "cal" in /usr/share/man/man1
directory only.
OPTIONS
-b Search for binaries.
-m Search for manuals.
-s Search for sources.
-u 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 'whereis -m -u *' asks for those files in the current directory
which have no documentation file, or more than one.
-B list
Limit the places where whereis searches for binaries, by a whitespace-sepa‐
rated list of directories.
-M list
Limit the places where whereis searches for manuals, by a whitespace-sepa‐
rated list of directories.
-S list
Limit the places where whereis searches for sources, by a whitespace-sepa‐
rated list of directories.
-f Terminates the directory list and signals the start of filenames. It must
be used when any of the -B, -M, or -S options is used.
-l Output list of effective lookup paths the whereis is using. When non of -B,
-M, or -S is specified the option will out hard coded paths that the command
was able to find on system.
EXAMPLE
To find all files in /usr/bin which are not documented in /usr/man/man1 or have no
source in /usr/src:
$ cd /usr/bin
$ whereis -u -ms -M /usr/man/man1 -S /usr/src -f *
FILE SEARCH PATHS
By default whereis tries to find files from hard-coded paths, which are defined
with glob patterns. The command attempst to use contents of $PATH and $MANPATH
environment variables as default search path. The easiest way to know what paths
are in use is to add -l listing option. Effects of the -B, -M, and -S are display
with -l.
AVAILABILITY
The whereis command is part of the util-linux package and is available from Linux
Kernel Archive ⟨ftp://ftp.kernel.org/pub/linux/utils/util-linux/⟩.
util-linux March 2013 WHEREIS(1)
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