mcat: 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/mcat - from package: mtools

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

On Debian possible default full paths are:

/usr/bin/mcat - from package: mtools

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

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