Update README.md

qiniu · Feb 26, 2024 · 89d3fde · 89d3fde
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diff --git a/gsh/README.md b/gsh/README.md
@@ -95,6 +95,12 @@ You can get the value of an environment variable through `${XXX}`. For example:
 ls "${HOME}"
 ```
 
+You can also use `exec` command through `$XXX`:
+
+```coffee
+exec "ls $HOME"
+```
+
 
 ### Check last error