pacoxph: 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/pacoxph - from package: probabel

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

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