poterminology: 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 CentOS possible default full paths are:

/usr/bin/poterminology - from package: translate-toolkit

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/poterminology - from package: translate-toolkit

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

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