dotlock (GNU Mailutils) 3.1.1 Copyright (C) 2007-2016 Free Software Foundation, inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

Usage: dotlock [OPTION...] FILE GNU dotlock -- lock mail spool files. -d, --debug print details of failure reasons to stderr -f, --force[=MINUTES] forcibly break an existing lock older than a certain time -r, --retry[=RETRIES] retry the lock a few times -u, --unlock unlock Global debugging settings --debug-level=LEVEL set Mailutils debugging level --debug-line-info show source info with debugging messages Configuration handling --config-file=FILE load this configuration file; implies --no-config --config-lint check configuration file syntax and exit --config-verbose verbosely log parsing of the configuration files --no-config do not load site and user configuration files --no-site-config do not load site-wide configuration file --no-user-config do not load user configuration file --set=PARAM=VALUE set configuration parameter Informational options --config-help show configuration file summary --show-config-options show compilation options -?, --help give this help list --usage give a short usage message -V, --version print program version Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options. Returns 0 on success, 3 if locking the file fails because it's already locked, and 1 if some other kind of error occurred. Report bugs to <bug-mailutils@gnu.org>. GNU Mailutils home page: <http://mailutils.org> General help using GNU software: <http://www.gnu.org/gethelp/>