taterm: 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/taterm - from package: aterm-ml

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

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