Script to vacuum all sqlite database on my system

vacuum-maintenance.sh

#!/bin/bash

set -eu

echo "Scanning for sqlite databases..."
find \
  ~/Library\
  ~/Pictures/\
  -type f '(' -iname '*.sqlite' -o -iname '*.db' ')' \
  -print0 | while read -r -d $'\0' filename; do
  filetype=$(file "${filename}")
  if [[ "${filetype}" =~ 'SQLite 3' ]]; then
    oldsize=$(stat -c %s "${filename}")
    nice sqlite3 "${filename}" vacuum
    newsize=$(stat -c %s "${filename}")
    if [[ $oldsize -ne $newsize ]]; then
      change=$(( 100 - (100 * $newsize) / $oldsize ))
      echo "${filename}: ${change}% "
    fi
  fi
done

# EOF

Hi,
I have some discussion on this enhancement from thunderbird and firefox developper who say:
"Thanks. Without the original "pre-vacuum" list it's not possible to give a sensible answer regarding performance. In the future, please document the state before changing your environment."

Have you some "sensible answer" regarding performance, on your case ? I adpated your script to run on my whole home directory with huge succes: thanks a lot https://gist.github.com/xcombelle/ecfa46719cd2ac5f8aeb401b173c7901

The only problem of the script was the display of all file names, which basically hide the information he asked me.
If you have some idea to disable this dispaly you are welcome. (I tried, and have no idea where the dispaly happened.

I don’t use Thunderbird nor do I use this script anymore.

The echo is what prints the file name and percent change.