poswap: 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/poswap - from package: translate-toolkit

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

On Debian possible default full paths are:

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

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

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