rmdup

   1 #!/usr/bin/env bash
   2
   3 #==============================================================================
   4 # rmdup
   5 # File ID: 6fc9b9b8-5d43-11df-ab40-90e6ba3022ac
   6 # Compares the files in directory $1 with existing files in directory $2
   7 # and removes the duplicates in directory $2.
   8 #==============================================================================
   9
  10 if [ $# -ne 2 ]; then
  11         echo $0: Invalid number of operands \($#\), shall be two. >&2
  12         exit 1
  13 fi
  14
  15 if [ ! -d "$1" ]; then
  16         echo $0: Operand 1 \($1\) is not a directory >$2
  17         exit 1
  18 fi
  19
  20 if [ ! -d "$2" ]; then
  21         echo $0: Operand 2 \($2\) is not a directory >&2
  22         exit 1
  23 fi
  24
  25 # BUG: Has to check that $1 and $2 are different dirs. Now it checks inode
  26 # on every file, it might skip files if they has the same link, but better
  27 # safe than sorry.
  28 #
  29 # Also... Files with weird names (spaces etc) could have unwanted results.
  30 # A check should be done for things like that. Later.
  31
  32 # Future check for weird names
  33 # find $1 $2 | grep -e ' ' -e '\t' -e ';' -e '&' -e '|' || { echo farsken; exit 1; }
  34 # echo hurra
  35 # exit
  36
  37 for _qqrc in $1/*; do
  38         _qqr2="$2/`basename $_qqrc`"
  39         if [ -f "$_qqrc" -a -f "$_qqr2" ]; then
  40                 if [ "$_qqrc" -ef "$_qqr2" ]; then
  41                         echo $0: File $_qqrc and $_qqr2 are the same >&2
  42                 else
  43                         diff -q "$_qqrc" "$_qqr2" >/dev/null
  44                         if [ $? -eq 0 ]; then
  45                                 rm -v "$_qqr2"
  46                         else
  47                                 echo $_qqrc og $_qqr2 are not equal
  48                         fi
  49                 fi
  50         fi
  51 done