refactoring changes from sequpgrade (endReturn, ...) and some modernizations

seqs/backup.sh

@@ -20,7 +20,7 @@ seq_config() {
   return 0
 }
 
-step_1_info() { 
+step_1_info() {
   echo "Backup root"
   echoinfo "Essential excludes are provided in the configuration template."
   echoinfo "(${seq_configTemplate})"
@@ -42,7 +42,7 @@ step_1() {
   step budir / "$buTarget" "${BACKUP_EXCLUDES[@]}" "$@"
 }
 
-step_3_info() { 
+step_3_info() {
   # Backup single directory recursively
   local opt=
   local dir='<SOURCE>'
@@ -152,15 +152,15 @@ step_3() {
   if [ $noRemount -eq 0 ]; then
     # remount target to be writable
     exep "mount -o rw,remount '${buTarget}' >>/dev/null 2>&1"
-    endReturn -o $? "Remount (${buTarget}) to be writable failed"
+    endReturn "Remount (${buTarget}) to be writable failed"
   fi
 
-  if [ ! -w "${buTarget}" ] ; then 
+  if [ ! -w "${buTarget}" ] ; then
     error -e "Backup target (${buTarget}) is not writable"
     exit 1
   fi
 
-  checkInstalled 
+  checkInstalled
   exep "mv -f ${buTarget}/${buLog}0.log /tmp/${buLog}1.log 2>/dev/null"
   exep "${sq_toolBin} -avxHAX --delete --info=stats2 ${buExcludes[*]} ${tmpSource} ${tmpTarget} > /tmp/${buLog}0.log"