BASH: Записать одновременно в лог и вывод на экран

#!/bin/bash
…
function logger(){
  LOG_FILE="$1"
  while read LOG_STRING ; do
    echo "$LOG_STRING"
    echo "$LOG_STRING" >> "$LOG_FILE"
  done;
}

{
  #backuping
  echo "Starting backup [$CUR_DATE]"
  mkdir "$CUR_DEST"
  
  echo "Backup Trac:"
…
  echo "Backup PSQL:"
…
  echo "Backup Svn:"
…
  echo "Mirroring backup to:$REMOUTE_DIR"
…
  echo "The End…"
  
} 2>&1 | logger "$CUR_DEST.log"

cp "$CUR_DEST.log" "$REMOUTE_DIR"