polygraph-pmix2-ips: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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-pmix2-ips - from package: polygraph

You may install the required package with command apt-get install {package}
Error in other languages:
polygraph-pmix2-ips: bevel nie gevind nie
polygraph-pmix2-ips: comandă negăsită
polygraph-pmix2-ips: comando não encontrado
polygraph-pmix2-ips: commande introuvable
polygraph-pmix2-ips: command not found
polygraph-pmix2-ips: käsku ei ole
polygraph-pmix2-ips: không tìm thấy lệnh
polygraph-pmix2-ips: komanda nerasta
polygraph-pmix2-ips: Kommando nicht gefunden.
polygraph-pmix2-ips: kommandot finns inte
polygraph-pmix2-ips: komut yok
polygraph-pmix2-ips: nie znaleziono polecenia
polygraph-pmix2-ips: níor aimsíodh an t-ordú
polygraph-pmix2-ips: no se encontró la orden
polygraph-pmix2-ips: no s'ha trobat l'ordre
polygraph-pmix2-ips: opdracht niet gevonden
polygraph-pmix2-ips: parancs nem található
polygraph-pmix2-ips: perintah tidak ditemukan
polygraph-pmix2-ips: príkaz nenájdený
polygraph-pmix2-ips: příkaz nenalezen
polygraph-pmix2-ips: команда не найдена
polygraph-pmix2-ips: командата не е открита
polygraph-pmix2-ips: 命令找不到
polygraph-pmix2-ips: コマンドが見つかりません