yade-batch: 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/yade-batch - from package: yade

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

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