pofilter: 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/pofilter - from package: translate-toolkit

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

On Debian possible default full paths are:

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

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

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