msgcat: 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/msgcat - from package: gettext

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

On Debian possible default full paths are:

/usr/bin/msgcat - from package: gettext

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

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