whereis
locate the binary, source, and manual page files for a command
Synopsis
whereis
[-bmsu] [-BMS directory...
-f] filename...
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description
whereis
locates source/binary and manuals sections for specified
files. 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 a list of standard Linux
places.
options
-b
Search only for binaries.
-m
Search only for manual sections.
-s
Search only for sources.
-u
Search for unusual entries. A file is said to be unusual
if it does not have one entry of each requested type. Thus
’whereis -m -u *’
asks for those files in the current directory which have no
documentation.
-B
Change or otherwise limit the places where
whereis searches for binaries.
-M
Change or otherwise limit the places where
whereis searches for manual sections.
-S
Change or otherwise limit the places where
whereis searches for sources.
-f
Terminate the last directory list and signals the start
of file names, and must be used when any of the
-B, -M, or -S options
are used.
availability
The whereis command is part of the util-linux package and is
available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
example
Find all files in /usr/bin which are not documented in
/usr/man/man1 with source in /usr/src:
example% cd /usr/bin
example% whereis -u -M /usr/man/man1 -S /usr/src -f *
files
/{bin,sbin,etc}
/usr/{lib,bin,old,new,local,games,include,etc,src,man,sbin,
X386,TeX,g++-include}
/usr/local/{X386,TeX,X11,include,lib,man,etc,bin,games,emacs}
bugs
Since
whereis uses chdir(2V) to run faster,
pathnames given with the -M, -S,
or -B must be full; that is, they must begin
with a ’/’.
whereis
has a hard-coded path, so may not always find what
you’re looking for.
see also
chdir(2V)