pot2po: 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/pot2po - from package: translate-toolkit

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

On Debian possible default full paths are:

/usr/bin/pot2po - from package: translate-toolkit

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

Error in other languages:
pot2po: bevel nie gevind nie
pot2po: comandă negăsită
pot2po: comando não encontrado
pot2po: commande introuvable
pot2po: command not found
pot2po: käsku ei ole
pot2po: không tìm thấy lệnh
pot2po: komanda nerasta
pot2po: Kommando nicht gefunden.
pot2po: kommandot finns inte
pot2po: komut yok
pot2po: nie znaleziono polecenia
pot2po: níor aimsíodh an t-ordú
pot2po: no se encontró la orden
pot2po: no s'ha trobat l'ordre
pot2po: opdracht niet gevonden
pot2po: parancs nem található
pot2po: perintah tidak ditemukan
pot2po: príkaz nenájdený
pot2po: příkaz nenalezen
pot2po: команда не найдена
pot2po: командата не е открита
pot2po: 命令找不到
pot2po: コマンドが見つかりません