mincaverage: 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/bin/mincaverage - from package: minc-tools

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

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