whereis - locate the binary, source, and manual page files for a command
whereis [ -bmsu ] [ -BMS directory... -f ] filename ...
whereis locates source/binary and manuals sections for specified files. The supplied
names are first stripped of leading pathname components and any (single) trailing exten-
sion 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.
-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.
Find all files in /usr/bin which are not documented in /usr/man/man1 with source in
example% cd /usr/bin
example% whereis -u -M /usr/man/man1 -S /usr/src -f *
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.
8 May 1994 WHEREIS(1)