pvmgetarch: 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/pvmgetarch - from package: pvm

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

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