rxgettext: 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 Debian possible default full paths are:

/usr/bin/rxgettext - from package: ruby-gettext

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

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