for loop

.github/workflows/update-changed-os.yml

@@ -26,7 +26,10 @@ jobs:
         run: |
           git status
           chmod a+x action
-          git diff --name-only | grep 'actions/' | cut -d'/' -f2 | xargs -n1 ./action | tee /dev/null
+          changed_os=$(git diff --name-only | grep 'actions/' | cut -d'/' -f2)
+          for os in ${changed_os}; do
+            ./action $os | tee /dev/null
+          done
           git config --global user.name "${{ github.repository_owner }}"
           git config --global user.email "noreply@github.com"