diff --git a/.github/workflows/build-rhel7.yml b/.github/workflows/build-rhel7.yml
index 2c48182..293ac67 100644
--- a/.github/workflows/build-rhel7.yml
+++ b/.github/workflows/build-rhel7.yml
@@ -15,8 +15,9 @@ jobs:
         CARGO_HOME: /root/.cargo
     steps:
       - uses: actions/checkout@v3
-      - run: echo "$HOME"
-      - run: echo "$PATH"
+      - run: echo $HOME
+      - run: echo $PATH
+      - run: echo $GITHUB_WORKSPACE
       - run: /usr/bin/df -h
       - run: id
       - run: pwd
@@ -35,6 +36,9 @@ jobs:
       - run: /bin/bash -c 'PATH=/root/.cargo/bin && rustc --version'
       - run: rustc --version
       - run: cargo --version
+      - run: pwd
+      - run: cd $GITHUB_WORKSPACE
+      - run: pwd
       # - uses: actions/upload-artifact@v2
       #   with:
       #     name: daqbufferbin