Simple bash script that searches for unused i18n strings

lang.sh

#!/bin/bash

declare -a all_labels=(
  "GEN_LBL_SALUTATION"
  "GEN_LBL_TITLE"
  "GEN_LBL_NAME"
  "GEN_LBL_FNAME"
  "GEN_LBL_LNAME"
  "GEN_LBL_ORGA"
  "GEN_LBL_POSITION"
  "GEN_LBL_WEBSITE"
  "GEN_LBL_TELEPHONE"
  "GEN_LBL_FAX"
);

labels_to_remove=();

ignore_files="--ignore-file=is:de.json --ignore-file=is:lang.sh --ignore-file=is:en.json"

run=0;
for i in "${all_labels[@]}"; do
  if [[ $(ack "$i" -l $ignore_files;) ]]; then
    echo -ne "$run / ${#all_labels[@]}                                       \r"
  else
    labels_to_remove+=("$i")
    echo -ne "$run / ${#all_labels[@]}, Adding $i                            \r"
  fi
  run=$[$run +1];
done;

for i in "${labels_to_remove[@]}"; do
  echo "Removing $i"
  grep -v "$i" ./app/scripts/lang/en.json > ./tmp-en.json; mv ./tmp-en.json ./app/scripts/lang/en.json
  grep -v "$i" ./app/scripts/lang/de.json > ./tmp-de.json; mv ./tmp-de.json ./app/scripts/lang/de.json
done;