Users can set environmental variables to override Transmission's default behavior and for debugging.
- If TRANSMISSION_HOME is set, Transmission will look there for its settings instead of in the default location.
- If TR_CURL_VERBOSE is set, debugging information for libcurl will be enabled. More information about libcurl's debugging mode is available here.
- TR_DEBUG (undocumented).
- If TR_DEBUG_FD is set to an integer, that integer is treated as a file descriptor and very verbose debugging information is written to it. For example, here is how to turn on debugging and save it to a file named "runlog" when running Transmission from a bash shell:
$ export TR_DEBUG_FD=2 $ transmission 2>runlog
- If TR_DHT_VERBOSE is set, then Transmission will log all of the DHT's activities in excrutiating detail to standard error.
Standard Variables Used By Transmission
- If TRANSMISSION_WEB_HOME is not set, non-Mac platforms will look for the Web Interface files in XDG_DATA_HOME and in XDG_DATA_DIRS as described in the XDG Base Directory Specification. XDG_DATA_HOME has a default value of $HOME/.local/share/.
- If TRANSMISSION_HOME is not set, Unix-based versions of Transmission will look for their settings in $XDG_CONFIG_HOME/transmission/. XDG_CONFIG_HOME has a default value of $HOME/.config/.
- If HOME is set, it's used in three ways:
- by the XDG variables, as described above
- If TRANSMISSION_HOME is not set, Mac-based versions of Transmission will look for their settings in $HOME/Library/Application Support/Transmission
- $HOME/Downloads is the default download directory.