Poe: command not found

Have You tried accessing the binary with the full path?

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 Debian possible default full paths are:

/usr/bin/Poe - from package: poe.app

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