tora: command not found

Have You tried accessing the binary with the full path?

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/tora - from package: tora

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