mat2dof: 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/mat2dof - from package: cmtk

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

Error in other languages:
mat2dof: bevel nie gevind nie
mat2dof: comandă negăsită
mat2dof: comando não encontrado
mat2dof: commande introuvable
mat2dof: command not found
mat2dof: käsku ei ole
mat2dof: không tìm thấy lệnh
mat2dof: komanda nerasta
mat2dof: Kommando nicht gefunden.
mat2dof: kommandot finns inte
mat2dof: komut yok
mat2dof: nie znaleziono polecenia
mat2dof: níor aimsíodh an t-ordú
mat2dof: no se encontró la orden
mat2dof: no s'ha trobat l'ordre
mat2dof: opdracht niet gevonden
mat2dof: parancs nem található
mat2dof: perintah tidak ditemukan
mat2dof: príkaz nenájdený
mat2dof: příkaz nenalezen
mat2dof: команда не найдена
mat2dof: командата не е открита
mat2dof: 命令找不到
mat2dof: コマンドが見つかりません