bisync: documentation #5164

Co-authored-by: Chris Nelson <stuff@cjnaz.com>

cmd/bisync/help.go

@@ -17,10 +17,37 @@ func makeHelp(help string) string {
 
 var shortHelp = `Perform bidirectonal synchronization between two paths.`
 
-var rcHelp = makeHelp(`
-TODO
-`)
+var rcHelp = makeHelp(`This takes the following parameters
+
+- path1 - a remote directory string e.g. |drive:path1|
+- path2 - a remote directory string e.g. |drive:path2|
+- dryRun - dry-run mode
+- resync - performs the resync run
+- checkAccess - abort if {CHECKFILE} files are not found on both filesystems
+- checkFilename - file name for checkAccess (default: {CHECKFILE})
+- maxDelete - abort sync if percentage of deleted files is above
+  this threshold (default: {MAXDELETE})
+- force - maxDelete safety check and run the sync
+- checkSync - |true| by default, |false| disables comparison of final listings,
+              |only| will skip sync, only compare listings from the last run
+- removeEmptyDirs - remove empty directories at the final cleanup step
+- filtersFile - read filtering patterns from a file
+- workdir - server directory for history files (default: {WORKDIR})
+- noCleanup - retain working files
+
+See [bisync command help](https://rclone.org/commands/rclone_bisync/)
+and [full bisync description](https://rclone.org/bisync/)
+for more information.`)
 
 var longHelp = shortHelp + makeHelp(`
-TODO
+
+[Bisync](https://rclone.org/bisync/) provides a
+bidirectional cloud sync solution in rclone.
+It retains the Path1 and Path2 filesystem listings from the prior run.
+On each successive run it will:
+- list files on Path1 and Path2, and check for changes on each side.
+  Changes include |New|, |Newer|, |Older|, and |Deleted| files.
+- Propagate changes on Path1 to Path2, and vice-versa.
+
+See [full bisync description](https://rclone.org/bisync/) for details.
 `)