raw2tostress: 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/raw2tostress - from package: esys-particle

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

Error in other languages:
raw2tostress: bevel nie gevind nie
raw2tostress: comandă negăsită
raw2tostress: comando não encontrado
raw2tostress: commande introuvable
raw2tostress: command not found
raw2tostress: käsku ei ole
raw2tostress: không tìm thấy lệnh
raw2tostress: komanda nerasta
raw2tostress: Kommando nicht gefunden.
raw2tostress: kommandot finns inte
raw2tostress: komut yok
raw2tostress: nie znaleziono polecenia
raw2tostress: níor aimsíodh an t-ordú
raw2tostress: no se encontró la orden
raw2tostress: no s'ha trobat l'ordre
raw2tostress: opdracht niet gevonden
raw2tostress: parancs nem található
raw2tostress: perintah tidak ditemukan
raw2tostress: príkaz nenájdený
raw2tostress: příkaz nenalezen
raw2tostress: команда не найдена
raw2tostress: командата не е открита
raw2tostress: 命令找不到
raw2tostress: コマンドが見つかりません