mu/www/cheatsheet.org

Mu Cheatsheet

• Mu Cheatsheet
  • Indexing your mail
  • Finding messages
    • messages about Helsinki
    • messages to Jack with subject jellyfish containing the word tumbleweed
    • messages between 2 kilobytes and a 2Mb, written in December 2009 with an attachment from Bill
  • Further processing of matched messages
  • Integration with mail clients

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Mu Cheatsheet

Here are some tips for using mu. If you want to know more, please refer to the mu man pages. For a quick warm-up, there's the mu-easy man-page.

Indexing your mail

You can index your mail with:

   $ mu index

If mu did not guess the right Maildir, you can set it explicitly:

   $ mu index --maildir=~/MyMaildir

If you want to exclude certain directories from being indexed (for example, directories with spam-messages), put a file called .noindex in the directory to exlude, and it will be ignored when indexing (including its children)

Finding messages

After you have indexed your messages, you can search them. Here are some examples.

messages about Helsinki

   $ mu find Helsinki

messages to Jack with subject jellyfish containing the word tumbleweed

   $ mu find to:Jack subject:jellyfish tumbleweed

messages between 2 kilobytes and a 2Mb, written in December 2009 with an attachment from Bill

   $ mu find size:2k..2m date:20091201..20093112 flag:attach from:bill

Further processing of matched messages

If you need to process the results of your queries with some other program, you can return the results as a list of absolute paths to the messages found:

For example, to get the number of lines in all your messages mentioning banana, you could use something like:

   $ mu find --fields="'l'" banana | xargs wc -l

Note that we use 'l', so the returned message paths will be quoted. This is useful if you have maildirs with spaces in their names.

For further processing, also the --format=(xml|json|sexp) may be interesting.

Integration with mail clients

See the example in the mu-find man page.

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