popuretext: 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/popuretext - from package: translate-toolkit

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

On Debian possible default full paths are:

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

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

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