gpomme: 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/gpomme - from package: gpomme

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