Update README.md

README.md

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-# gclone
-rclone mod
+
+gclone  
+====  
+English [简体中文](https://github.com/donwa/gclone/blob/master/README_zh.md)  
+
+
+A modified version of the [rclone](//github.com/rclone/rclone) 
+Provide dynamic replacement sa file support for google drive operation
+
+
+## installation  
+```
+bash <(wget -qO- https://git.io/gclone.sh)
+```
+
+```
+// View version information
+gclone version
+```
+
+## Instructions 
+### 1.service_account_file_path Configuration   
+add `service_account_file_path` Configuration.For dynamic replacement service_account_file(sa文件). Replace configuration when `rateLimitExceeded` error occurs
+`rclone.conf` example:  
+```
+[gc]
+type = drive  
+scope = drive  
+service_account_file = /root/accounts/1.json  
+service_account_file_path = /root/accounts/  
+root_folder_id = root  
+```
+`/root/accounts/` Folder contains multiple access and edit permissions ***service account file(*.json)***.  
+
+### 2.Support incoming id
+If the original rclone is across team disks or shared folders, multiple configuration drive letters are required for operation.
+gclone supports incoming id operation
+```
+gclone copy gc:{folde_id1} gc:{folde_id2}  --drive-server-side-across-configs
+```
+folde_id1 can be:Common directory, shared directory, team disk. 
+
+```
+gclone copy gc:{folde_id1} gc:{folde_id2}/media/  --drive-server-side-across-configs
+
+```
+
+```
+gclone copy gc:{share_fiel_id} gc:{folde_id2}  --drive-server-side-across-configs
+```
+
+