Unknown option: help Usage: /usr/bin/mailseek [options] [files] Options: --no-recursive Do not dive into directories, default is recursive --verbose Provide verbose output on STDERR --debug Provide debug output on STDERR --null Separate file names by NUL chars, default is newline --details Print some headers, not only the file name --case Case sensitive match, default is case insensitive --any Succeed if any criterion matches, by default all criteria must match --filetime Date-time filtering is based on file's mtime, not on Email headers (faster) Filter options: --newer, --older DATETIME Consider Date, Delivery-Date, Received headers --sender PATTERN From, Sender, Originator, Return-Path, Received --recipient PATTERN To, Cc, Bcc, Delivered-To, Received --subject PATTERN Subject, Thread-Topic --attachment PATTERN Search in name of attachments (Email parts) --mime PATTERN/PATTERN MIME type (type/subtype) of Email parts --header HEADER[:PATTERN] Search for arbitrary header name and optionally for its content --body FTSEARCH Body text (plain text and html are supported) Formats: DATETIME "YYYY-mm-dd_HH:MM:SS" - Meant in your timezone. Omitting less significant quantifiers makes them behave wildcard. PATTERN a) simple string - match substring (see --case) b) "~REGEX" - match regexp if PATTERN starts with tilde HEADER a) simple string - match exact string b) "~REGEX" - match regexp just like PATTERN FTSEARCH Fulltext search expression, see Search::Fulltext(3pm) PATTERN and HEADER are optionally prefixed by '!' which inverts results. HEADER and --mime matching are always case insensitive.