Update a little code

require-ess/tools/setE3Env.bash

@@ -346,7 +346,7 @@ source "${SRC_PATH}"/iocsh_complete.bash
 
 print_env "$1"
 
-BASE_version=$(echo "${EPICS_BASE##*/}" | awk -F '-' '{print $2}')
+BASE_version="${EPICS_BASE##*/base-}"
 E3_ENV_INFO="(${BASE_version}-${E3_REQUIRE_VERSION})"
 NEW_E3_PS="${E3_ENV_INFO}\[\033[33m\]\u\[\033[m\]@\[\033[33;1m\]\w\[\033[m\]\$ "