Global options details

These options apply to all duplicacy commands and must be placed before any command

Quick overview

   -verbose, -v                 show more detailed information
   -debug, -d                   show even more detailed information, useful for debugging
   -log                         enable log-style output
   -stack                       print the stack trace when an error occurs
   -no-script                   do not run script before or after command execution
   -background                  read passwords, tokens, or keys only from keychain/keyring or env
   -profile <address:port>      enable the profiling tool and listen on the specified address:port
   -comment                     add a comment to identify the process
   -help, -h                    show help


duplicacy [global options] command


-verbose, -v

Show more detailed messages. For the highest level of info, chose -debug. By default, only INFO, WARNING, and ERROR messages are displayed.

-debug, -d

Show DEBUG level messages (the highest, most detailed level of messages). By default, only INFO, WARNING, and ERROR messages are displayed.


Show the timestamp, level, and the message id of each log message.


The -stack option is used to dump the stack trace when an error occurs to help locate where the error is.


Using this option will stop Pre Command and Post Command Scripts from running. This is usually used to avoid an infinite loop of command execution.

:no_entry_sign: :no_entry:-background

The -background option will instruct Duplicacy not to ask for interactive password input. As a result, Duplicacy will read all credentials only from keychain/keyring or the environment variables. If a credential can’t be found, an error will be reported.

This is the default CLI usage!

:no_entry_sign: This options should is useful only for duplicacy GUI and therefore should never be used by duplicacy CLI!

-profile <address:port>

With the -profile option, you can open http://address:port/debug/pprof/ in a browser to profile a running Duplicacy instance.

Please refer to pprof - The Go Programming Language for instructions.


The -comment option was introduced to allow Duplicacy processed to be identified by arguments, for example when using ps.


Suppose you have 2 duplicacy processes running:

duplicacy -comment LONG_OPERATION check -all &
duplicacy check -all &

when you ps ax | grep duplicacy there will be nothing of help to differentiate the 2 processes.
But when you use this option: ps ax | grep LONG_OPERATION you will find your desired process.

-help, -h

Show the help.