themole: 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/themole - from package: themole

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