Advanced help output showing actual paths before step start

seqs/backup.sh

@@ -40,10 +40,38 @@ step_1() {
 }
 
 step_3_info() { 
-  echo "Backup [OPTION] <DIRECTORY> <TARGET> [EXCLUDES...]"
+  # Backup single directory recursively
-  echoinfo "Exclude path notation starts within DIRECTORY."
+  local opt="[OPTION]"
-  echoinfo "e.g. to exclude DIRECTORY/a:"
+  local dir="<DIRECTORY>"
-  echoinfo " $0 budir DIRECTORY TARGET /a"
+  local tar="<TARGET>"
+  local exc="[EXCLUDES...]"
+  shift
+  if [ "$1" == "-t" ] ; then
+    opt=" -t     "
+    tar=
+    shift
+  fi
+  if [ ! -z "$1" ] ; then
+    dir="$1"
+    shift
+    if [ ! -z $tar ] && [ ! -z "$1" ] ; then
+      tar="$1"
+      shift
+    else
+      tar="$BACKUP_TARGET"
+    fi
+    if [ ! -z "$1" ] ; then
+      exc="$@"
+    else
+      exc="[NO EXCLUDES]"
+    fi
+  fi
+  echo     "Backup $opt $dir $tar $exc"
+  echoinfo "        -t  :   Using configuration value as TARGET"
+  echoinfo "                <DIRECTORY> [EXCLUDES...]"
+  echoinfo "EXCLUDES path notation starts within $dir"
+  echoinfo "e.g. to exclude $dir/a:"
+  echoinfo " $0 budir $dir $tar /a"
 }
 step_3_alias() { ALIAS="budir"; }
 step_3() {