change cmd

Author: JoeWang1127

hermetic_build/library_generation/generate_library.sh

@@ -114,10 +114,8 @@ fi
 if [ -z "${os_architecture}" ]; then
   os_architecture=$(detect_os_architecture)
 fi
-random_suffix=$(LC_ALL=C tr -dc 'a-zA-Z' < /dev/urandom | fold -w 20 | head -n 1)
-echo "1"
+random_suffix=$(LC_ALL=C tr -dc 'a-zA-Z' < /dev/urandom | fold -w 20 | awk 'NR==1 {print; exit}')
 temp_destination_path="${output_folder}/temp_preprocessed/${random_suffix}"
-echo "2"
 mkdir -p "${output_folder}/${destination_path}"
 if [ -d "${temp_destination_path}" ]; then
   # we don't want the preprocessed sources of a previous run