primusrun: 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/primusrun - from package: primus

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

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