822field(1)
NAME
822field - print the value of a header field in a mail
message
SYNOPSIS
822field [ name ]
DESCRIPTION
822field reads an 822-format mail message from its stan
dard input. For each header field named name, 822field
prints one line containing the value of the field.
If there is no such field, 822field exits 100.
If name is not supplied, 822field looks for Subject
fields.