Users can set environmental variables to override Transmission's default behavior and for debugging.
Transmission-Specific Variables
-
If
TRANSMISSION_HOME
is set, Transmission will look there for its settings instead of in the default location. -
If
TRANSMISSION_WEB_HOME
is set, Transmission will look there for the Web Interface files, such as the javascript, html, and graphics files. -
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 inXDG_DATA_HOME
and inXDG_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.
- by the
Standard Variables Used By Other Tools
- Transmission uses the libcurl library for http- and https-based tracker announces and scrapes. Transmission doesn't support proxies, but libcurl itself honors a handful of environment variables to customize its proxy behavior.