rmsgfmt: 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/rmsgfmt - from package: ruby-gettext

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

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