Add checks for file

Author: cockerma

ucdtemplates/setpasswordstodefault

@@ -16,6 +16,30 @@
 FILE="${1}"
 TEMP=$(mktemp)
 
+show_usage () {
+	echo -e "Usage:\t"$(basename "$0") "FILE"
+}
+
+# Validate FILE
+if [[ -z "${FILE}" ]] ; then
+	echo "FILE was not specified"
+	show_usage
+	exit 1
+elif [[ ! -f "${FILE}" ]] ; then
+	echo "${FILE} does not exist or is not a file "
+	show_usage
+	exit 1
+fi
+
 jq -a '(.. | .password? | strings | select( . = startswith("crypt_v1"))) |= "${p?:cics.password}" | (.. | .ks_password? | strings | select( . = startswith("crypt_v1"))) |= "${p?:cics.kspassword}" | (.. | .ts_password? | strings | select( . = startswith("crypt_v1"))) |= "${p?:cics.tspassword}"' "${FILE}" > "${TEMP}"
 
+RC=$?
+if [[ $RC -gt 0 ]] ; then
+	echo "Failed with RC = $RC"
+	rm "${TEMP}"
+	exit $RC
+fi
+
 mv "${TEMP}" "${FILE}"
+
+echo "Done"