BINFMT.D(5)                                  binfmt.d                                 BINFMT.D(5)



NAME
       binfmt.d - Configure additional binary formats for executables at boot

SYNOPSIS
       /etc/binfmt.d/*.conf

       /run/binfmt.d/*.conf

       /usr/lib/binfmt.d/*.conf

DESCRIPTION
       At boot, systemd-binfmt.service(8) reads configuration files from the above directories to
       register in the kernel additional binary formats for executables.

CONFIGURATION FORMAT
       Each file contains a list of binfmt_misc kernel binary format rules. Consult
       binfmt_misc.txt[1] for more information on registration of additional binary formats and
       how to write rules.

       Empty lines and lines beginning with ; and # are ignored. Note that this means you may not
       use ; and # as delimiter in binary format rules.

       Each configuration file shall be named in the style of program.conf. Files in /etc/
       override files with the same name in /usr/lib/ and /run/. Files in /run/ override files
       with the same name in /usr/lib/. Packages should install their configuration files in
       /usr/lib/, files in /etc/ are reserved for the local administrator, who may use this logic
       to override the configuration files installed from vendor packages. All files are sorted
       by their filename in lexicographic order, regardless of which of the directories they
       reside in. If multiple files specify the same binary type name, the entry in the file with
       the lexicographically latest name will be applied.

       If the administrator wants to disable a configuration file supplied by the vendor, the
       recommended way is to place a symlink to /dev/null in /etc/binfmt.d/ bearing the same
       filename.

EXAMPLE
       Example 1. /etc/binfmt.d/wine.conf example:

           # Start WINE on Windows executables
           :DOSWin:M::MZ::/usr/bin/wine:

SEE ALSO
       systemd(1), systemd-binfmt.service(8), systemd-delta(1), wine(8)

NOTES
        1. binfmt_misc.txt
           https://www.kernel.org/doc/Documentation/binfmt_misc.txt



systemd 215                                                                           BINFMT.D(5)