linux - Fast way to check timestamp of files in directory tree -


i need check file structure in directory tree every second, script taking long suspect collecting timestamps , calculating base64 it's name takes time in large directory tree.

how can gather tree structure, store them in array, , loop through each file collecting timestamp in array, array key cipher file path?

later i'm comparing array older version , adds additional wasted time, improve efficiency. 

shopt -s globstar dotglob files=("$base"/**)   new() {     keys=("${!files_new[@]}")     in "${keys[@]::2}"              unset "files_new[$i]"     done      file in "${files[@]}"              stamp=$(stat -c "%y" "$file")         hash=$(echo "$file" | base64)          files_new[$hash]=$stamp     done    }

i have achieved faster probing using find command -printf output suggested peter cordes. loop went 3 seconds 300 milliseconds. 

loop() {     while read string             stamp=${string%|*}         file=${string#*|}          files_new[$file]=$stamp     done < <(find "${base}" -name "*" -printf "%td%tt|%p\n") }

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