September 2009
Beginner
942 pages
85h 34m
English
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Name
whereis
Synopsis
whereis [options]files
Locate the binary, source, and manual page files for specified commands/files. The supplied filenames 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 directories (/bin, /etc, /usr/bin, /usr/local/bin/, etc.).
Options
- -b
Search only for binaries.
- -B directories
Change or otherwise limit the directories to search for binaries.
- -f
Terminate the last directory list and signal the start of filenames. Required when the -B, -M, or -S option is used.
- -m
Search only for manual sections.
- -M directory
Change or otherwise limit the directories to search for manual sections.
- -s
Search only for sources.
- -S directory
Change or otherwise limit the directories to search for sources.
- -u
Search for unusual entries--that is, files that do not have one entry of each requested type. Thus, the command whereis -m -u * asks for those files in the current directory that have no documentation.
Example
Find all files in /usr/bin that are not documented in /usr/share/man/man1 but that have source in /usr/src:
$cd /usr/bin$whereis -u -M /usr/share/man/man1 -S /usr/src -f *
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.