for indexing (analyzing) the contents of your Maildirs, and storing the
information in a database. See
for finding messages in your database, using certain search
for finding contacts (names + e-mail addresses) matching a certain expression,
and exporting the results in various formats for use in other programs.
for displaying e-mail messages. See
for creating Maildirs. See
for extract MIME-parts (such as attachments) from messages. See
Some mu sub-commands support colorized output, and do so by default. If you dont want colors, you can use --nocolor.
Currently, mu find, mu view, mu cfind and mu extract support colors.
mus output is in the current locale, with the exceptions of the output specifically meant for output to UTF8-encoded files. In practice, this means that the output of commands index, view, extract is always encoded according to the current locale.
The same is true for find and cfind, with some exceptions, where the output is always UTF-8, regardless of the locale.
For cfind the exception is --format=bbdb. This is hard-coded to UTF-8, and as such specified in the output-file, so emacs/bbdb can handle it correctly without guessing.
For find the output is encoded according the locale for --format=plain (the default), and UTF-8 for all other formats (json, sexp, xml).
Commands mu index and find and cfind work with the database, while the other ones work on invidual mail files. Hence, running view, mkdir and extract does not require the mu database.
The various commands are discussed in more detail in their own separate man-pages; here the general options are discussed.
mu offers several general options that apply to all commands, including mu without any command.
--muhome causes mu to use an alternative directory to store and read its database and logs. By default, ~/.mu is used.
-d, --debug makes mu generate extra debug information, useful for debugging the program itself. By default, debug information goes to the log file, ~/.mu/log/mu.log. It can safely be deleted when mu is not running. When running with --debug option, the log file can grow rather quickly. See the note on logging below.
-q, --quiet causes mu not to output informational messages and progress information to standard output, but only to the log file. Error messages will still be sent to standard error. Note that mu index is much faster with --quiet, so it is recommended you use this option when using mu from scripts etc.
--log-stderr causes mu to not output log messages to standard error, in addition to sending them to the log file.
-v, --version prints mu version and copyright information.
-h, --help lists the various command line options, while --help-index, --help-find and --help-all list only the options for respectively the specified command or for all commands.
The various mu subcommands typically exit with 0 (zero) upon success, and non-zero when some error occurred. The table lists the various error codes.
exit code | error ----------+------------------------------------------- 1 | MU_ERROR 2 | MU_ERROR_IN_PARAMETERS 3 | MU_ERROR_INTERNAL 4 | MU_ERROR_NO_MATCHES | 11 | MU_ERROR_XAPIAN | 13 | MU_ERROR_XAPIAN_QUERY 14 | MU_ERROR_XAPIAN_DIR_NOT_ACCESSIBLE 15 | MU_ERROR_XAPIAN_NOT_UP_TO_DATE 16 | MU_ERROR_XAPIAN_MISSING_DATA 17 | MU_ERROR_XAPIAN_CORRUPTION 18 | MU_ERROR_XAPIAN_CANNOT_GET_WRITELOCK 30 | MU_ERROR_GMIME | 50 | MU_ERROR_CONTACTS 51 | MU_ERROR_CONTACTS_CANNOT_RETRIEVE | 70 | MU_ERROR_FILE 71 | MU_ERROR_FILE_INVALID_NAME 72 | MU_ERROR_FILE_CANNOT_LINK 73 | MU_ERROR_FILE_CANNOT_OPEN 74 | MU_ERROR_FILE_CANNOT_READ 75 | MU_ERROR_FILE_CANNOT_CREATE 76 | MU_ERROR_FILE_CANNOT_MKDIR 77 | MU_ERROR_FILE_STAT_FAILED 78 | MU_ERROR_FILE_READDIR_FAILED 79 | MU_ERROR_FILE_INVALID_SOURCE
Please report bugs if you find them: https://github.com/djcb/mu/issues
Dirk-Jan C. Binnema <firstname.lastname@example.org>
|User Manuals||MU (1)||March 2013|