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header(1) - header - extract fields from mail header - man 1 header

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HEADER(1)                                                            HEADER(1)



NAME
       header - extract fields from mail(1,8) header

SYNOPSIS
       header [-c] [-n] [-v] [-f fieldname] ...

DESCRIPTION
       The header program reads a mail(1,8) 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(3,n) their  cases  match.   Normally,  mail(1,8)
              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(1,8) -f options.

       -f fieldname
              Display (or delete, if(3,n) -v) header fields with the given name.

SUPPORT
       Please  mail(1,8)  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/.

SEE ALSO
       deliver(8)




                                    header                           HEADER(1)

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