.\" Man page generated from reStructuredText. . .TH "SYNCTHING" "1" "November 18, 2017" "v0.14" "Syncthing" .SH NAME syncthing \- Syncthing . .nr rst2man-indent-level 0 . .de1 rstReportMargin \\$1 \\n[an-margin] level \\n[rst2man-indent-level] level margin: \\n[rst2man-indent\\n[rst2man-indent-level]] - \\n[rst2man-indent0] \\n[rst2man-indent1] \\n[rst2man-indent2] .. .de1 INDENT .\" .rstReportMargin pre: . RS \\$1 . nr rst2man-indent\\n[rst2man-indent-level] \\n[an-margin] . nr rst2man-indent-level +1 .\" .rstReportMargin post: .. .de UNINDENT . RE .\" indent \\n[an-margin] .\" old: \\n[rst2man-indent\\n[rst2man-indent-level]] .nr rst2man-indent-level -1 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]] .in \\n[rst2man-indent\\n[rst2man-indent-level]]u .. .SH SYNOPSIS .INDENT 0.0 .INDENT 3.5 .sp .nf .ft C syncthing [\-audit] [\-auditfile=] [\-browser\-only] [device\-id] [\-generate=] [\-gui\-address=
] [\-gui\-apikey=] [\-home=] [\-logfile=] [\-logflags=] [\-no\-browser] [\-no\-console] [\-no\-restart] [\-paths] [\-paused] [\-reset\-database] [\-reset\-deltas] [\-unpaused] [\-upgrade] [\-upgrade\-check] [\-upgrade\-to=] [\-verbose] [\-version] .ft P .fi .UNINDENT .UNINDENT .SH DESCRIPTION .sp Syncthing is an application that lets you synchronize your files across multiple devices. This means the creation, modification or deletion of files on one machine will automatically be replicated to your other devices. We believe your data is your data alone and you deserve to choose where it is stored. Therefore Syncthing does not upload your data to the cloud but exchanges your data across your machines as soon as they are online at the same time. .SH OPTIONS .INDENT 0.0 .TP .B \-audit Write events to timestamped file \fBaudit\-YYYYMMDD\-HHMMSS.log\fP\&. .UNINDENT .INDENT 0.0 .TP .B \-auditfile= Use specified file or stream (\fB"\-"\fP for stdout, \fB"\-\-"\fP for stderr) for audit events, rather than the timestamped default file name. .UNINDENT .INDENT 0.0 .TP .B \-browser\-only Open the web UI in a browser for an already running Syncthing instance. .UNINDENT .INDENT 0.0 .TP .B \-device\-id Print device ID to command line. .UNINDENT .INDENT 0.0 .TP .B \-generate= Generate key and config in specified dir, then exit. .UNINDENT .INDENT 0.0 .TP .B \-gui\-address=
Override GUI listen address. .UNINDENT .INDENT 0.0 .TP .B \-home= Set configuration directory. The default configuration directory is \fB$HOME/.config/syncthing\fP (Unix\-like), \fB$HOME/Library/Application Support/Syncthing\fP (Mac) and \fB%LOCALAPPDATA%\eSyncthing\fP (Windows). .UNINDENT .INDENT 0.0 .TP .B \-logfile= Set destination filename for logging (use \fB"\-"\fP for stdout, which is the default option). .UNINDENT .INDENT 0.0 .TP .B \-logflags= Select information in log line prefix, default 2. The \fB\-logflags\fP value is a sum of the following: .INDENT 7.0 .IP \(bu 2 1: Date .IP \(bu 2 2: Time .IP \(bu 2 4: Microsecond time .IP \(bu 2 8: Long filename .IP \(bu 2 16: Short filename .UNINDENT .sp To prefix each log line with date and time, set \fB\-logflags=3\fP (1 + 2 from above). The value 0 is used to disable all of the above. The default is to show time only (2). .UNINDENT .INDENT 0.0 .TP .B \-no\-browser Do not start a browser. .UNINDENT .INDENT 0.0 .TP .B \-no\-console Hide the console window. (On Windows only) .UNINDENT .INDENT 0.0 .TP .B \-no\-restart Disable the Syncthing monitor process which handles restarts for some configuration changes, upgrades, crashes and also log file writing (stdout is still written). .UNINDENT .INDENT 0.0 .TP .B \-paths Print the paths used for configuration, keys, database, GUI overrides, default sync folder and the log file. .UNINDENT .INDENT 0.0 .TP .B \-paused Start with all devices and folders paused. .UNINDENT .INDENT 0.0 .TP .B \-reset\-database Reset the database, forcing a full rescan and resync. Create \fI\&.stfolder\fP folders in each sync folder if they do not already exist. \fBCaution\fP: Ensure that all sync folders which are mountpoints are already mounted. Inconsistent versions may result if the mountpoint is later mounted and contains older versions. .UNINDENT .INDENT 0.0 .TP .B \-reset\-deltas Reset delta index IDs, forcing a full index exchange. .UNINDENT .INDENT 0.0 .TP .B \-unpaused Start with all devices and folders unpaused. .UNINDENT .INDENT 0.0 .TP .B \-upgrade Perform upgrade. .UNINDENT .INDENT 0.0 .TP .B \-upgrade\-check Check for available upgrade. .UNINDENT .INDENT 0.0 .TP .B \-upgrade\-to= Force upgrade directly from specified URL. .UNINDENT .INDENT 0.0 .TP .B \-verbose Print verbose log output. .UNINDENT .INDENT 0.0 .TP .B \-version Show version. .UNINDENT .SH DEPRECATED OPTIONS .INDENT 0.0 .TP .B \-gui\-apikey= Override GUI API key (deprecated as of v0.13, to be removed in the future \- do not use). .UNINDENT .SH EXIT CODES .INDENT 0.0 .TP .B 0 Success / Shutdown .TP .B 1 Error .TP .B 2 Upgrade not available .TP .B 3 Restarting .TP .B 4 Upgrading .UNINDENT .sp Some of these exit codes are only returned when running without a monitor process (with environment variable \fBSTNORESTART\fP set). Exit codes over 125 are usually returned by the shell/binary loader/default signal handler. Exit codes over 128+N on Unix usually represent the signal which caused the process to exit. For example, \fB128 + 9 (SIGKILL) = 137\fP\&. .SH DEVELOPMENT SETTINGS .sp The following environment variables modify Syncthing\(aqs behavior in ways that are mostly useful for developers. Use with care. If you start Syncthing from within service managers like systemd or supervisor, path expansion may not be supported. .INDENT 0.0 .TP .B STNODEFAULTFOLDER Don\(aqt create a default folder when starting for the first time. This variable will be ignored anytime after the first run. .TP .B STGUIASSETS Directory to load GUI assets from. Overrides compiled in assets. .TP .B STTRACE Used to increase the debugging verbosity in specific or all facilities, generally mapping to a Go package. Enabling any of these also enables microsecond timestamps, file names plus line numbers. Enter a comma\-separated string of facilities to trace. \fBsyncthing \-help\fP always outputs an up\-to\-date list. The valid facility strings are: .INDENT 7.0 .TP .B Main and operational facilities: .INDENT 7.0 .TP .B main Main package. .TP .B model The root hub; the largest chunk of the system. File pulling, index transmission and requests for chunks. .TP .B config Configuration loading and saving. .TP .B db The database layer. .TP .B scanner File change detection and hashing. .TP .B versioner File versioning. .UNINDENT .TP .B Networking facilities: .INDENT 7.0 .TP .B beacon Multicast and broadcast discovery packets. .TP .B connections Connection handling. .TP .B dialer Dialing connections. .TP .B discover Remote device discovery requests, replies and registration of devices. .TP .B relay Relay interaction. .TP .B protocol The BEP protocol. .TP .B nat NAT discovery and port mapping. .TP .B pmp NAT\-PMP discovery and port mapping. .TP .B upnp UPnP discovery and port mapping. .UNINDENT .TP .B Other facilities: .INDENT 7.0 .TP .B events Event generation and logging. .TP .B http REST API. .TP .B sha256 SHA256 hashing package (this facility currently unused). .TP .B stats Persistent device and folder statistics. .TP .B sync Mutexes. Used for debugging race conditions and deadlocks. .TP .B upgrade Binary upgrades. .TP .B all All of the above. .UNINDENT .UNINDENT .TP .B STPROFILER Set to a listen address such as "127.0.0.1:9090" to start the profiler with HTTP access. .TP .B STCPUPROFILE Write a CPU profile to cpu\-$pid.pprof on exit. .TP .B STHEAPPROFILE Write heap profiles to \fBheap\-$pid\-$timestamp.pprof\fP each time heap usage increases. .TP .B STBLOCKPROFILE Write block profiles to \fBblock\-$pid\-$timestamp.pprof\fP every 20 seconds. .TP .B STPERFSTATS Write running performance statistics to \fBperf\-$pid.csv\fP\&. Not supported on Windows. .TP .B STDEADLOCK Used for debugging internal deadlocks. Use only under direction of a developer. .TP .B STDEADLOCKTIMEOUT Used for debugging internal deadlocks; sets debug sensitivity. Use only under direction of a developer. .TP .B STDEADLOCKTHRESHOLD Used for debugging internal deadlocks; sets debug sensitivity. Use only under direction of a developer. .TP .B STNORESTART Equivalent to the \-no\-restart argument. Disable the Syncthing monitor process which handles restarts for some configuration changes, upgrades, crashes and also log file writing (stdout is still written). .TP .B STNOUPGRADE Disable automatic upgrades. .TP .B STHASHING Specify which hashing package to use. Defaults to automatic based on performance. Specify "minio" (compatibility) or "standard" for the default Go implementation. .TP .B GOMAXPROCS Set the maximum number of CPU cores to use. Defaults to all available CPU cores. .TP .B GOGC Percentage of heap growth at which to trigger GC. Default is 100. Lower numbers keep peak memory usage down, at the price of CPU usage (i.e. performance). .UNINDENT .SH SEE ALSO .sp \fIsyncthing\-config(5)\fP, \fIsyncthing\-stignore(5)\fP, \fIsyncthing\-device\-ids(7)\fP, \fIsyncthing\-security(7)\fP, \fIsyncthing\-networking(7)\fP, \fIsyncthing\-versioning(7)\fP, \fIsyncthing\-faq(7)\fP .SH AUTHOR The Syncthing Authors .SH COPYRIGHT 2015, The Syncthing Authors .\" Generated by docutils manpage writer. .