mcaffine: 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/lib/cmtk/bin/mcaffine - from package: cmtk

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

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