restore_tide_db: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/restore_tide_db - from package: tcd-utils

You may install the required package with command apt-get install {package}

Error in other languages:
restore_tide_db: bevel nie gevind nie
restore_tide_db: comandă negăsită
restore_tide_db: comando não encontrado
restore_tide_db: commande introuvable
restore_tide_db: command not found
restore_tide_db: käsku ei ole
restore_tide_db: không tìm thấy lệnh
restore_tide_db: komanda nerasta
restore_tide_db: Kommando nicht gefunden.
restore_tide_db: kommandot finns inte
restore_tide_db: komut yok
restore_tide_db: nie znaleziono polecenia
restore_tide_db: níor aimsíodh an t-ordú
restore_tide_db: no se encontró la orden
restore_tide_db: no s'ha trobat l'ordre
restore_tide_db: opdracht niet gevonden
restore_tide_db: parancs nem található
restore_tide_db: perintah tidak ditemukan
restore_tide_db: príkaz nenájdený
restore_tide_db: příkaz nenalezen
restore_tide_db: команда не найдена
restore_tide_db: командата не е открита
restore_tide_db: 命令找不到
restore_tide_db: コマンドが見つかりません