ucftar_pack does not necessarily need to check for the particle file. it's not present for single-phase simulations

bash/ucftar_pack

@@ -72,7 +72,7 @@ set -- "${POSITIONAL[@]}"
 
 # Parse input filename
 din=$1
-seqnum=$2 
+seqnum=$2
 
 # Construct output filename if not specified
 if [ -z "$fout" ]; then
@@ -106,7 +106,8 @@ if [ ! -s ${din}/${fproc} ]; then
 fi
 if [ ! -s ${din}/${fpart} ]; then
   (>&2 echo "[Error] File not found or empty: ${din}/${fpart}")
-  exit 1
+  # exit 1
+  fpart=
 fi
 
 # Check if all velocity fields exist and are not empty
@@ -174,7 +175,7 @@ while [ $packloop -eq 1 ]; do
     snumfilecur=0
     scursize=1024   # Initialize with size of trailing zero bloc
     unset flist
-    while true; do 
+    while true; do
       sfilesize=$(wc -c ${din}/${flist_sbase[${scounter}]} | awk '{print $1}') # raw size
       sfilesize=$(((${sfilesize}+511)/512*512+512))                            # adjust to 512 byte-blocks and add header
       spredictsize=$((${scursize}+${sfilesize}))
@@ -198,8 +199,8 @@ while [ $packloop -eq 1 ]; do
         fi
         flag_splitdone=1
         break
-      fi 
-    done 
+      fi
+    done
   fi
   # Create tar archive
   tar $flagtar --directory=${din} -cf ${fout} ${flist[@]}
@@ -211,7 +212,7 @@ while [ $packloop -eq 1 ]; do
   # Compare checksums (CNC32), if flag is set
   flistx=($(echo ${flist[@]} | sed s/"_$seqnum"/""/g))
   if [ $checksum -eq 1 ]; then
-    for ii in "${!flistx[@]}"; do 
+    for ii in "${!flistx[@]}"; do
       if [ $verbose -eq 1 ]; then
         (>&2 echo "Verifying checksum: ${flist[$ii]}")
       fi