test

binder/postBuild

@@ -44,16 +44,16 @@ else
 fi
 
 # Set 'PYARROW_IGNORE_TIMEZONE' to suppress warnings from PyArrow.
-echo "export PYARROW_IGNORE_TIMEZONE=1" >> ~/.bashrc
+sed -i -e "1iexport PYARROW_IGNORE_TIMEZONE=1\\" ~/.bashrc
 
 # Add sbin to PATH to run `start-connect-server.sh`.
 SPARK_HOME=$(python -c "from pyspark.find_spark_home import _find_spark_home; print(_find_spark_home())")
-echo "export PATH=${PATH}:${SPARK_HOME}/sbin" >> ~/.bashrc
-echo "export SPARK_HOME=${SPARK_HOME}" >> ~/.bashrc
+sed -i -e "1iexport PATH=${PATH}:${SPARK_HOME}/sbin\\" ~/.bashrc
+sed -i -e "1iexport SPARK_HOME=${SPARK_HOME}=1\\" ~/.bashrc
 
 # Add Spark version to env for running command dynamically based on Spark version.
 SPARK_VERSION=$(python -c "import pyspark; print(pyspark.__version__)")
-echo "export SPARK_VERSION=${SPARK_VERSION}" >> ~/.bashrc
+sed -i -e "1iexport SPARK_VERSION=${SPARK_VERSION}\\" ~/.bashrc
 
 # Suppress warnings from Spark jobs, and UI progress bar.
 mkdir -p ~/.ipython/profile_default/startup