polygraph-reporter: 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/polygraph-reporter - from package: polygraph

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

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