sorted tar

files/archive-subfolders

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-VERSION="20190820"
+VERSION="20230307"
 
 function helpexit() {
     BS=$( basename "$0" )
@@ -81,6 +81,10 @@ for ((i=1; i<=${#@}; i++)) {
 }
 [[ ${#FOLDERS[@]} -eq 0 ]] && FOLDERS+=( "." )
 which pv &>/dev/null || { echo pv command missing; exit 1; }
+if tar --version | grep -q GNU; then
+  SORTFILES="--sort=name"
+fi
+
 export IFS=$'\n'
 REALFOLDERS=( $( listfolders "${FOLDERS[@]}" ) )
 echo $R'Existing files will be overwritten!'$Z
@@ -104,7 +108,7 @@ for d in "${REALFOLDERS[@]}"; do
   printf "$d"
   SIZE=$( find "$d" -type f -printf %s"\n" | count_size "$d" )
   printf "\n"
-  eval "tar cvv --index-file=\"$d.${SUFFIX}.lst\" \"$d\" | \
+  eval "tar cvv $SORTFILES --index-file=\"$d.${SUFFIX}.lst\" \"$d\" | \
         pv -s \"$SIZE\" $COMPRESSCMD > \"$d.${SUFFIX}\"" && {
     # tar exists okay
     NEWEST="$( awk '{ print $4 " " $5 }' "$d.${SUFFIX}.lst" | sort | tail -n 1 )"