tahoe: 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/tahoe - from package: tahoe-lafs

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

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