The
header program reads a mail header on its standard input. Any text that
follows the header is ignored. It then prints all, part, or none of
the header to its standard output, depending on its command line
options.
OPTIONS
-c
Match field names only if their cases match. Normally, mail header
field names are case-insensitive.
-n
Prefix displayed header fields with their names. The resulting output
is itself a valid header (albeit possibly shorter). By default, only
field values are displayed.
-v
Print only the fields that are not listed in
-foptions.
-f fieldname
Display (or delete, if -v) header fields with the given name.
SUPPORT
Please mail enhancements, enhancement requests, trouble reports, etc.
to <chip@pobox.com>. See also the Debian GNU/Linux bug tracking system
at http://www.debian.org/Bugs/.
