Update README.md

README.md

@@ -33,10 +33,7 @@ export CA_FILE_PATH=$TEMP_PATH/ca.crt.pem
 echo download ca from $CA_RAW_URL to $CA_FILE_PATH
 wget $CA_RAW_URL -O $CA_FILE_PATH
 echo check downloaded ca
-if [[ -f $CA_FILE_PATH ]]
-then
-    echo $CA_FILE_PATH exists.
-fi
+[ -f $CA_FILE_PATH ] && echo "File exist" || echo "File does not exist"
 echo add ca to the certificate store
 sudo cp $CA_FILE_PATH /usr/local/share/ca-certificates/ca.crt.crt
 sudo update-ca-certificates