msgunfmt: 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/msgunfmt - from package: gettext

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

On Debian possible default full paths are:

/usr/bin/msgunfmt - from package: gettext

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

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