linux - Writing a function to replace duplicate files with hardlinks -

linux - Writing a function to replace duplicate files with hardlinks -

i need write bash script iterates through files of specified directory , replaces duplicates of files hardlinks. right now, entire function looks this:

#! /bin/bash # sameln --- remove duplicate copies of files in specified directory d=$1 cd $d #go directory specified default input filenum=0 #loop counter dir=".*|*" f in $dir #for every file in directory files[$filenum]=$f #save file array filenum=$((filenum+1)) #increment counter done for((j=0; j<$filenum; j++)) #for every file if [ -f "$files[$j]" ] #access file in array for((k=0; k<$filenum; k++)) #for every other file if [ -f "$files[$k]" ] #access other files in array test[cmp -s ${files[$j]} ${files[$k]}] #compare if files identical [ln ${files[$j]} ${files[$k]}] #change sec file hard link fi done fi done

basically:

loop through files of depth 1 in specified directory put file contents array compare each array item every other array item , replace duplicates hardlinks

the test directory has 4 files: a, b, c, d

a , b different, c , d duplicates (they empty). after running script, ls -l shows of files still have 1 hardlink, script appears have done nothing.

where going wrong?

dir=".*|*" f in $dir #for every file in directory echo $f done

this code outputs

.*|*

you should not loop on files this. find command. see, code doesn't work because first loop faulty.

btw, don't name variables uppercase, reserved scheme variables, believe.

linux bash