katerm: 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/katerm - from package: aterm-ml

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

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