pim_test: 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/pim_test - from package: styx

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

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