Re: /usr/local vs. /opt

From: James Wilkinson (fedora_at_westexe.demon.co.uk)
Date: 09/16/05

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    Date: Fri, 16 Sep 2005 17:28:46 +0100
To: For users of Fedora Core releases <fedora-list@redhat.com>

    David Mackintosh wrote:
    > We've gone through several iterations here. If the software is going
    > to be used by multiple machines, I put it in /usr/local because my
    > /usr/local tree is nfs-shared across my network. (Yes, I'm grimly
    > aware of a non-local 'local' directory.)

    It *is* local. It's *site*-local.

    The File Hierarchy Standard says:
        The /usr/local hierarchy is for use by the system administrator when
        installing software locally. It needs to be safe from being
        overwritten when the system software is updated. It may be used for
        programs and data that are shareable amongst a group of hosts, but
        not found in /usr.
    http://www.pathname.com/fhs/pub/fhs-2.3.txt.gz

    Incidentally, my rule of thumb is that if a program's files are arranged
    Unix-style, with binaries in /usr/local/bin or /usr/local/sbin,
    libraries in /usr/local/lib, man pages in /usr/local/man, etc., then
    the program can go in /usr/local.

    Other packages (usually from the commercial world) which like to have
    all their files under one directory can have the directory in /opt.

    So if I install RealPlayer from the tar file, it goes under /opt. I
    haven't had the privilege of installing Oracle on *ix, but it looks like
    it ought to go in /opt, too.

    James. 

    -- 
E-mail address: james | Legacy (adj):
@westexe.demon.co.uk  | an uncomplimentary computer-industry epithet that
                      | means 'it works'.
                      |     -- Anthony DeBoer
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