script to clean up "hard linked duplicates"

bins/public_bin/findHardLinkedFiles.sh

@@ -0,0 +1,85 @@
+#!/bin/bash
+
+# Searches for "hard linked duplicates" and then offers to delete them interactively.
+# Stops once there is only one file of each duplicate group left, even if it might still have hard-linked duplicates outside of the searched directory.
+#
+# Example usage:
+# findHardLinkedFiles.sh .
+# findHardLinkedFiles.sh . 0
+# findHardLinkedFiles.sh . 1
+# findHardLinkedFiles.sh . 0 -maxdepth 3
+
+DIR=${1:-.}
+shift
+REM=${1:-0}
+shift
+FINDOPTS=${@:-""}
+
+echo "--> Using DIR = ${DIR}"
+echo "--> Using REM = ${REM}"
+echo "--> Using FINDOPTS = ${FINDOPTS}"
+
+INODE_LIST=$(find ${DIR} ${FINDOPTS} -type f -links +1 -printf "%i\n" | sort -n | uniq --repeated)
+for inode in ${INODE_LIST}
+do
+  echo "--- inode = ${inode} ---"
+
+  # create file list
+  FILE_LIST=()
+  while IFS=  read -r -d $'\0'; do
+      FILE_LIST+=("$REPLY")
+  done < <(find ${DIR} ${FINDOPTS} -inum ${inode} -print0)
+
+  # display files
+  for f in "${FILE_LIST[@]}"
+  do
+    echo "${f}"
+  done
+
+  # print stats
+  Nfiles=${#FILE_LIST[@]}
+  Nlinks=$(stat --printf="%h" "${FILE_LIST[0]}")
+  Nfiles_other=$((Nlinks - Nfiles))
+  Nlinks_min=$((Nfiles_other + 1))
+  echo "Nlinks=${Nlinks} = Nfiles=${Nfiles} here + Nfiles_other=${Nfiles_other} elsewhere. -> Nlinks_min=${Nlinks_min}"
+
+  # remove files interactively
+  if test ${REM} -eq 1
+  then
+    for f in "${FILE_LIST[@]}"
+    do
+      Nlinks=$(stat --printf="%h" "${f}")
+      echo "Nlinks=${Nlinks} links left. Nlinks_min=${Nlinks_min}."
+      if test ${Nlinks} -gt ${Nlinks_min}
+      then
+        rm -iv "${f}"
+      fi
+    done  
+  fi
+
+done
+
+# define orignal and duplicates
+#ORIG=("${FILE_LIST[0]}")
+#DUPS=("${FILE_LIST[@]:1}")
+
+#echo "-> Original:"
+#echo ${ORIG}
+
+#echo "-> Duplicates:"
+##echo ${DUPS}
+
+#for f in "${DUPS[@]}"
+#do
+  #echo "${f}"
+#done
+#rm -iv "${DUPS[@]}"
+
+#echo ${FILE_LIST[0]}
+#DUPS=("{$A[@]:1}")
+
+#for f in "${FILE_LIST[@]:1}"
+#do
+  #echo ${f}
+#done
+#rm -iv ${FILE_LIST[@]:1}